Windows Support Forum

RAM tech question (2x DDR2 800 vs. 4x DDR2 533)

Q: RAM tech question (2x DDR2 800 vs. 4x DDR2 533)

I have a 1GB stick of pc4200 (533mhz) ram in my comp at the moment, which is an AMD dual core w/ a 2000mhz MT FSB, in an AMD M2N4-SLI motherboard. Im wondering whether it would be better to start off by buying pc6400 (800mhz) RAM or sticking with what i have, the question is would 4 sticks of RAM running at 533mhz which adds up to 2132mhz total (533mhz x 4sticks) be the same as 4x sticks of pc6400 since the FSB would handle them running the same speed (3200mhz total, much greater than the fastest the FSB can run which is 2000) is having the more powerful ram better if i have so much that the FSB cant handle the speed? Im not really knowledgable in this field so i thought id ask the pros.

heres a link to the motherboard:

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Preferred Solution: RAM tech question (2x DDR2 800 vs. 4x DDR2 533)

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A friend of mine is upgrading his computer. He has an XFX 680i lt sli motherboard. What is better in RAM: 2gb at 800mhz or 4gb at 667mhz? He has XP. Also, should he get ECC ram, buffered ram, or normal ram? He wants to play games such as WoW, DIablo II, and maybe Crysis.

A:Ram question: ddr2 4gb at 667mhz or ddr2 2gb at 800mhz?

Four. You definitely notice a 100% difference in amount over 25% in memory speed - which isn't really noticeable anyway.

That mainboard uses normal DDR2 memory.
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Is this considered value RAM? I bought 2gigs of it for $50, installed it and it is defaulting to DDR-667. Seemed like a steal at the time

I had to manually go into BIOS and up the voltage and increase the clock - It is now at DDR-800
And while were at it, advertises this
as SLI ready, but I do NOT see where you would hook up the SLI cable. Anybody?
Just a few kinks with the new build

A:Kingston HyperX 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel De

From the newegg comments:

I feel as like I should clear up the confusion about this memory. This ram is programed to default to DDR2-667 at 1.8volts instead of the DDR2-800 at 2volts. This is because most motherboards default to 1.8v, and it would suck if you were trying to build a new computer and you couldn't boot because your memory only ran at 2v. That's why kingston made it so you can run it at 1.8v(although at a slower speed) and change it to 2v later. YOU NEED TO MANUALLY SET THE VOLTAGE TO 2VOLTS AND SPEED TO DDR2 800 @ 4-4-4-12 IN THE BIOS. If you don't do this then you are wasting good memory. If you don't believe me then read the data sheet here: to expand...

So that makes sense...

Also I think your 2nd link is the same as your first
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...can it be replaced with PC2 5300 DDR2 CL5 DDR2 SODIMM. Will my computer explode if I use it? It's a IBM Lenovo 3000, 1.5ghz, w/Intel Celeron M. Thank you

A:My system uses PC2 4200 DDR2 CL4 NP DDR2 SODIMM

Go here and on the right,.. click Scan My System
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I bought this video card recently (December '05). I just wanted to know how well it was cause I feel bad for buying a Socket 754 Mobo when 939 was just starting up . So I had to buy an AGP card and not knowing much about video cards. I just really want to know exactly how good the card is.

A:How good is a BFG Tech GeForce 6200 OC 256MB DDR2?

it aint the best card out there, but its pretty decent, id say like a radeon 9600, not sure, lol, but it aint a bad card tho
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Hi all,

I have Intel's D-915 processor, D102GCC2 Mob, 512 MB 533 Mhz DDR2 (UMAX)

I want to put another 1GB of DDR2 RAM in other slot. Can both work together well.

Also if I will go for 1Gb 667Mhz DDR2.. then ? Any problem..

Plz Suggest..


A:can a 533MHz DDR2 RAM and 800 Mhz DDR2 RAM work together ?

If your motherboard is limited to 533 mhz then a 667mhz memory stick will be automatically underclocked to 533mhz, defeating the object of buying the faster ram. As for if 2 sticks of 512mb and 1gb work together side by side, I've never tried it but suspect it would work. If you get any problems, make sure you put the 1gb stick into the 1st memory slot (the slot your 512Mb stick is in at the moment) and put your old 512mb stick into the second slot. I remember reading that the CPU is happier running a bigger memory stick in the 1st slot. It may be an old wives talke, but its worth trying if you get problems.
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I just purchased 4GB G.Skill DDR2 1066 MHZ RAM and installed it into my motherboard (Gigabyte GA-MA78GM-S2H). I have tried fixing the problem by readjusting the vdimm voltage to 2.1 volts after reading on the G.Skill website that 2.1v is compatible with most motherboards. After doing so, I tried to change the settings in my BIOS to manual so i could reconfigure the RAM to a 1066 mhz option but the max still only shows as 800. Please help me out if you know any way i can change the frequency to the 1066 mhz my ram is actually supposed to be .

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Im throwing together a machine for my GF.. I have a processor but need to get a socket 478 mobo.. The one I was looking at uses DDR2-400 memory and I have some DDR2-800 memory sticks laying around..

Will it work ok to use the DDR2-800 sticks on a mobo that accepts DDR2-400 memory?

A:Ok to put DDR2-800 memory on a DDR2-400 mobo?

"Typically" you can run faster memory in a machine rated for slower memory - the memory simply runs ate the mobo spec. That said, memory issues are always subjective to the varying tolerances of the memory itself and the motherboard.

I just combined 333 and 266 rated memory in a laptop that's spec'd at 266 - it flies with no issues.

I think you'll have no problems.

Just make double-sure that all the other specs are identical such as voltage, both unbuffered, both unregistered, same latency/speed specs e.g. 2-5-5-5, hopefully both with or both without SPD (or maybe all memory come with an SPD these days?).

Try to run it with the memory, it won't cause any damage. If you start getting errors/crashes, you know it doesn't work.
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i have an old laptop which has 4 gigs DDR2 using 2 channels, is there any adapter or linker which would allow me to connect my laptop memory to my desktop sized slot

A:DDR2 Laptop to Desktop DDR2

Yes. See Adapter / Tester : Laptop DDR2 200 pin SODIMM RAM to desktop DDR2 240 pin DIMM RAM: Computers & Accessories
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are they interchangeable?

if my board has DDR2, can i use the ddr2 dual channel?

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I'm looking to upgrade replace my current 2x2GB DDR2-667 modules with 2x2GB DDR2-1066 modules in a couple days but I'm wondering if I really need that!

I mainly write software and run linux on virtualbox on that particular machine and so far everything works really well but I'm looking forward to game a little on it as well, after a video card upgrade of course!

So, would I get like a reasonable performance increase with those ddr2-1066 modules or should I just forget about them and keep my current setup?

A:DDR2-667 to DDR2-1066 performance?

Does your motherboard support the DDR2-1066?
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I have had a DDR2-533 512mb stick for a while and its been using up the first slot for quite a while. I just got 2 DDR2-800 1gb sticks for a gift and was wondering if i should rearrange them in the slots or what? I have 4 slots, 2 orange and 2 green. Any help would be great.

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Hi I am new here long time reader and follower This is 667 Confusion and for DDR2 WEI - 800 DDR2 Same my WEI Same for DDR2 800 and DDR2 667 - Confusion first post and you lot seem mighty helpful I just installed Win RTM x - I had GB DDR RAM as follows GB DDR GB WEI Same for DDR2 800 and DDR2 667 - Confusion DDR GB DDR GB DDR My WEI was for RAM My chipset is INTEL DG WH - latest BIOS Drivers Etc My board supports dual channel DDR RAM upto and has DIMM I purchased x GB DDR and removed the - totaling up to GB GB DDR GB DDR GB DDR GB DDR And guess what my WEI is still for RAM I read my mobo manual and it said that RAM must match in speed and size So I tried as follows Channel GB DDR Channel Empty Channel GB DDR Channel Empty and Channel GB DDR Channel GB DDR Channel Empty Channel Empty My WEI still reads as - My memory timing according to everest is - - - I set the speed to manual is BIOS but am now confused as to why it is still reading as when many users are reporting 's with GB DDR At least it should improve over - please help

A:WEI Same for DDR2 800 and DDR2 667 - Confusion

Did you re-run the assessment?
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Hi I just bought seperate parts for my computer from newegg and I realized that when i changed my board, i forgot to make the ram match! I have ddr2 533 memory but my mobo supports ddr2 800, could the 533s still work?

A:DDR2 533 fit in a DDR2 800 slot?

Yes, they are physically the same but you may decrease the performance depending on what processor you have.
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My current ram is DDR2 so will any DDR2 work?

A:If my RAM is DDR2, will any DDR2 work?

Its best to match the speed at which you know your motherboard will operate.

Which motherboard (computer model number would suffice) do you have?
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Hi all

I am building my new computer soon and i am juggling between going with 4GB of DDR2-1066 ram or DDR2-800.

My question is this. Is DDR2-1066 worth paying extra for? How much of a performance gain is there?

Either way, i will be going with 4GB of Corsair XMS2 memory.

Thanks, Nissanman

A:DDR2-800 vs DDR2-1066

Actually selecting between 800 and 1066 RAM in the same brand doesn't present to terrible price penalty.

For 5 bucks more I'd go with the DDR2 1066. That's whether I could tell the difference or not.

Truth is, DDR2 10666 generally runs @ 2.0 volts or better, if you set the BIOS @ 1.8 (the generic DDR2 voltage), it's liable to default to 800Mhz anyway.
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I just realized I have some extra ram laying around. Here is the question. I was wondering if [email protected] with my AMD 9950 Black Edition OC'ed to 3ghz would be better than [email protected] with my CPU stock at 2.6ghz. I play things like WoW and Battlefield: Bad Company 2. Mostly new stuff.

A:4gb DDR2 1066 or 8gb DDR2 800

Definitely better off with just 4Gb, and having your CPU OCed than to have 8Gb, and running stock.

The difference probably is minimal anyway.

This is a different scenario if you do alot of photoshopping or RAM intensive stuff, those games won't take up gobs of RAM.
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Why is it that my cpu can only read 2gb?do i need to overclock/underclock the other ram?

A:Mixing ram 1gb ddr2 667 and 2gb ddr2 800

Since you did provide computer specs, I assume 1GB is allocated to onboard video memory.
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Hey gurus,

Here is a quick question:

I currently own 8GB's of - OCZ NVIDIA SLI-Ready Edition 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory - Desktop Memory. I am thinking about buying 4x2Gb of - OCZ Reaper HPC 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel Kit Desktop Memory - Desktop Memory. Is this a good move? Will I see much of a difference in performance from the 8Gb's that I currently own now?

Thanks guys

A:DDR2 Question

Hello Gudziel,

Sorry, but you will not see that much of an improvement from 800 Mhz to 1066 Mhz.

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Can I use my PC6400 on this board Asus M4A77TD Pro AMD 770 (Socket AM3) PCI-Express DDR3 Motherboard [90-MIB9S0-G0EAY00Z] Motherboards AMD AM3

A:Question on DDR2

Fluffy, it looks like that board only supports DDR3. Your DDR2 would not work.

It's not backward compatible.
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My Mainboard officially supports up to 8GB of RAM(2GBx4)

Will a 4GB module(4GBx1) such as this ever work in that motherbaord although not officially supported
I've heard that some x48 chipsets could accept 16GB of DDR2 RAM(4GBx4)

A:DDR2 RAM question

Probably not, since the module is 4GB and the only ones listed as compatible go upto 2GB. That said, the QVL list only details the memory modules and sizes that have been tested with the board. It is by no means exhaustive, and other modules/sizes may or may not work.
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I have a couple of DDR2-4200 modules that i would like to put in my dad's computer. The only problem is that his motherboard supports DDR2-3200 memory. i was just wondering if faster DDR2 memory is backwards compatible with the lower seed DDR2 stuff.

It seems logical to me that the motherboard would accept it and run my memory(DDR2-4200) at the lower DDR2-3200 speeds. Could someone verify this or correct me if i am wrong(wouldn't be the first time).

Thanks in advance

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I am not an avid computer guy but I always teach myself anything I can so here goes. I have a xps 410 with a Intel P965 Express Chipset. It has 4 slots for ddr2 memory on the motherboard. I currently have two pos kingston 512mb pieces. I recently ordered a geil 2gb stick ddr2 same series 5300 etc etc. I was doing some research today and I read somewhere that a slot will only take 1gb per time(max). I kno the max for a 32 bit windows OP is like 3gb or 3.5. So will I be able to maximize that geil 2gb stick or did I buy 2gb and will only get 1gb of use out of it? Thank you in advance.

A:quick xps 410 ddr2 question

Well, I have an asus motherboard and that says max of 512mb per slot when I put a 1gb in one of the slots it didn't even recognize it so I think it will be the same with the Dell as well.
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I've got two 512 DDR2 PC3200 cards and unfortunately one of my slots is fried, so I was wondering if I could upgrade to 2 gigs by putting a 1 gig card in with my two 512's.

A:Question about balancing DDR2 RAM

you should be able to fill the three remaining memory slots with any compatible ram
they all should be the same memory ie: ddr2 3200
the size of them isn't important ie :256, 512, 1 Gig
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I am considering buying the new Macbook Pro Core 2 Duo that was announced a couple of days ago. One of the configurable options is to load it up with max DDR2 RAM of 3 GIG in 1x2Gig and 1x1Gig arrangement.

I heard about the dual channel memory benefit of accessing in full 128 bit mode when the RAM are installed in pairs.

So my question is if I upgrade to the above configuration, would that wipe out the benefit of 128 bit access?

Thanks very much.

A:Question on DDR2 Memory

Yes it would. Get 2GB in a 1GBx2 configuration i.e. one 1GB stick in each slot and it will enable u to use dual-channel mode for increased performance.
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Hello everyone i got a quick question for you memory pro's .

I am currently running ddr2 800mhz but my board can support higher ,would it be wise to upgrade to the higher speed ram ?

Or should i stick with planing to buy a new board and new memory all together, meaning a board that supports DDR3.

Im wondering if it would benefit me anything since im having alot of bsod issues now that have a higher stock chip and my ram is at the lowest mhz the board offers and my card always crashes playing left for dead 2.

I have not tryed other games yet but im figuring i need to get higher ram to support the cpu better can someone give me a good opinion my specs are already listed .

I am prepared to do either or but im thinking picking up 8 gigs of higher ram would be better like 1066mhz

A:Question about DDR2 vs DDR3

also i would like to know would ddr2 1200 be better or 1066 would be better as terms of stability
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I'm back with most of my parts for my new build.

I have the memory, but I didn't get the dual memory, they sent me just one, one gig memory card. Does this have to be dual memory where the two cards come together or can I order another one just like it and it work the same.


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Hello all. This is probably a very easy question to answer but I thought I'd ask just to make sure.

I am running Windows 7 (x86) on a desktop and have 2 gigs of Corsair DDR2 RAM (800mhz) installed. I also have a spare 2 gigs of cheaper DDR2 RAM running at only 667mhz. If I add the extra RAM am I right in thinking the faster RAM will run at 667mhz?

Is the performance boost of double RAM going to outweigh the loss in speed from 800mhz to 667mhz? Do you think it is worth adding the extra 2 gigs?

Many thanks.

A:DDR2 RAM 667mhz Vs 800mhz Question

You are correct that the memory will all run at the slowest speed of the bunch. You would barely notice a difference, outside of running benchmarks, with the slight drop in speed. If you can utilize the extra memory with the software you are running, then it is worth it.

However, there are two things to keep in mind. First, since you aren't running Windows 7 x64, you are likely only going to see about 3.25 GB in total. Second, anytime you mix and match memory, there is a chance they won't play nice together. The only way to know is to try them. As long as both sets are compatible with your board, you won't do any harm. If you start having random errors or lockups, then remove the slower sticks.
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My new Media Center is equipped with 1gb DDR2 PC 3200 RAM

According to HP and the computer specs - the MB will support DDR2 PC 4200.

My question is, will I notice any performance increase (non-gaming apps) if I upgrade to 1gb PC4200 RAM ?
Photoshop and Premiere used a lot.

Would 2gb be overkill ?

A:DDR2 PC3200 RAM upgrade question

You're more likely to see an improvement by increasing the total amount of RAM.
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Will the DDR2 1066 RAM work in a Mobo designed with DDR2 800 standard? I just didn't know whether 240-pin ram units are compatable across varying speeds. Any help would be appreciated.

A:Question about DDR2 1066 RAM Compatibility

There's no guarantee. Have you checked the manufacturer's website to see if they have a compatibility list of systems they've tested the memory in?
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A:1000mhz ddr2 memory question

You'd have to overclock to get the full 1000Mhz speed from the memory, and unless you overclock the CPU with the memory there is little gain in running faster memory.
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I have a MSI K9A2 CF V2.

It supports Up DDR2 1066 and up to 8GB.

I have 2 2GB sticks right now which I will be moving to another computer. I wish to buy 2 sets of 2 2GB 10666. The board support 4 sticks of ram. If I buy 2 separate of the same memory will I have an issue meaning 4 total sticks of the same ram. Meaning will the sticks do there little duel channel thing??


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Right now i am useing a DDR1 AGP slot video card, it just went by by, So i am upgradeing to a DDR2 Video card, I am looking at

ASUS AH4650/DI/1GD2 Radeon HD 4650 1GB 128-bit DDR2 AGP 8X HDCP Ready Video Card (Newegg)

But i heard that the max for DDR1 is 512 MB? Will i be able to use this card? or will it just cut the cards capabilitys basicly in 1/2? I am also useing Windows Xp, please if you can help me
Plz and ty

A:DDR1-DDR2 Video Card Question


There are no DDR graphics cards made anymore-not since about 2000-2001.
If your AGP slot is x4 or x8 you will be fine with the card if it's within your budget- the only compatibility problem you would run into is if your AGP slot is generation 1 ( i.e AGP 1x or AGP 2x) as these use 3.3volt signalling. Your computer would most likely have to be 1998 vintage for it to have that.
If you are in any doubt then post your system/motherboard maker and model/specification
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dont know the motherboard yet as i will not be getting the pc in the mail until friday however my question is about Dual-Channel DDR RAM my mobo will have DIMMS capable of GB each for a total of GB it will be stock with MB DUAL CHANNEL DDR PC MHZ sticks can i add more aftermarket MB DUAL CHANNEL DDR PC MHZ sticks and maintain DUAL CHANNEL performance for a total of GB instead of GB if so do they have to be the same latency if so how will i determine latency as Ddr2 667mhz Channel Dual Question Ram Pc-5300 this is a DELL XPS GEN pre-assembled or would i be better off removing the MB original sticks Ddr2 Ram Pc-5300 Dual Channel 667mhz Question selling them on ebay and putting sets of brand Ddr2 Ram Pc-5300 Dual Channel 667mhz Question new CORSAIR Memory x MB PC - DDR RAM DUAL CHANNEL MATCHED PAIRS DELL XPS GEN SEP Pentium D GHZ DCT GB DDR SDRAM AT MHZ- X MB WIRELESS KYBD MOUSE IN WIDESCREEN ULTRASHARP LCD MB PCIE X ATI RADEON X XT RAID W X GB HARD DRIVES STRIPE WIN XP PRO SP X CD-RW X DVD -RW nbsp
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I'm buying 1 GB of RAM, and my motherboars supports both DDR2 and regular DDR. My question is, DDR2 is better yes, but how much better? Is it worth spending more money on? And is there a noticeable difference?


Short answer,yes it is faster but is it worth it to you.What do you use the computer for?
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Hi guys a quick question, is it possible to have 2 GB DDR2 800mhz and 1 GB DDR2 667 mhz in the same pc?
here's the link to the pc, im thinking about
ASRock > Products > Nettop Series > ION 330

A:800 mhz DDR2 and 667 mhz DDR2 in the same pc?

Yes, but the DDR2 800 will clock down to the DDR2 667 speed, so they will all run on that specified speed of 667mhz, non dual channel.
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i have a motherboard with 2 DDR2 slots, right now each one has 512mb. If i were to remove one off them and insert a 1gb stick, now having 1.5gb installed.

is this possible (Motherboard model on my system specs)

A:1.5gb of DDR2 ram

Yes. The motherboard supports up to 8GB of DDR2 memory.
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to run dual channel do I have to have my sticks in slots 1 and 3? Right now I have my sticks in 1 and 2 right next to each other. They still register as 2 gigs

A:ddr2 ram

In most cases, you need memory in the same-colored slots in order to ensure dual-channel mode. If it's a newer Asus, chances are you have two yellow slots and two black slots. Make sure you have dual-sticks (same size) in the same color slots for dual-channel.

The best way to tell without opening the case is to download/run CPU-Z and check the "Channels #" for Dual. If it's not Dual, then you can swap your memory around to get this working.
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I'm pondering upgrading to a Socket 939 MB that supports my older DDR Ram.

I'm curious if I should just hold out and save up for a MB that supports DDR2 ?

I'm not a gamer but I do ALOT of multi-tasking and surfing.

Would DDR2 really help my application ?

A:How much better is DDR2 over DDR ??

Anybody ??
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Is there a motherboard that is DDR2 800 compatible and has SLI capabilities???

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I see 240-pin and 276-pin DDR2 memory available from various sellers.

From what I see, I am guessing all 276-pin memory is ECC. Is that correct?

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What does the following mean:

Cas Latency

and what areas will make it more faster (example will Cas Latency 4 be faster then Cas Lantency 3; ECC vs Non-ECC)? Is higher the voltage better?


A:Ddr2 Ram

You'll want to match RAM voltage to your MOBO, 184pin 1.7v for example.
Lower Cas letency is faster, you can find 2, 2.5 and 3 usually, but the lower the latency the less stable the RAM is. Usually if you find a 3 it is Buffered and/or ECC for stablity.
ECC is error correcting code, it detects when your RAM has errors, which is nice, and can even fix single bit errors. Usually ECC is used in servers and isn't of HUGE importance in most home PCs, registered RAM is recommended if you plan on breaking the gigbyte barrier with ram though.
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If i get a 2GB DDR2 will it perform any adavantage? I am currently using 4GB DDR2. Will the 2GB be over taken by my 4GB? Im wondering this because one of my games doesnt look as good as i want it plus i want to enhance performance.

EDIT: I have a dv4 1275mx will the DDR2 fit?

A:If i get DDR2...

looking good and performance are two different animals, more so when it comes to laptops.

More memory might be able to yield more FPSs (Frames per Second... speed!) if by that much, better visual of graphics comes from your Video card & CPU and I am thinking that having an Onboard chip as a card, does not do well when playing games.

Now, if you give us a little more feedback of what kind of games and what you use the laptop for, we can perhaps help better?
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I have a 6GB mix of OCZ Reaper 8500 DDR2 and 9200 DDR2 running at 857mhz, 4-3-3-5-2T in my system and it's great. I also happen to have a 2x 2GB kit of G.skill around here.

I am contemplating swapping the 2gb of 9200 in my system for the 4gb of G.skill giving me 8GB instead of 6GB. I'm mainly just curious if I can make it work more than anything, but curious if there is any real point of 8GB vs 6GB of DDR2.


A:8GB vs 6GB DDR2

If its just an experiment go for it and have fun, but unless you really need the extra 2gb, I doubt that you're going to see increase in performance...
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which one should i go for with my P5Q pro mobo + E8400

OCZ Reaper 2x2GB 1066 MHz
G.Skill 2x2GB 1000 MHz PQ or
Kingston Hyperx 1066 MHz

with these can i run [email protected]

A:Which DDR2 Ram

I think its much of a muchness but heres the qualified vendors list from Asus P5Q-PRO-QVL.pdf

anything not on that list may give issues and need manual setting for timings and voltages but may also give no problem if you carefully match them to the motherboard
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Windows Xp, Media Centre Edition, Ver 2002, Intel Celeron(R) D 3.20GHz, 1Gig Ram.

I want to increase DDR2 Ram but what do I buy, there seems to be diferent speeds, which do I need???


A:DDR2 Ram

You need the RAM that is compatable with your motherboard.
The CPU and Windows version give no hint to that.

As Windows MCE was OEM, its likely to be a brand name (HP, Dell etc), so if you could supply the actual maker and exact model, we could probably help more here?
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Q: Ddr2

I have 2x2 Gb DDR2 memory, but I would like to have a total of 8Gb, is it possible?


Hello Stefi,

Yes, it sure is. Looking at your Asus P5QLD PRO motherboard specs at the link below, you could just add another set of 2x2 GB DDR2 RAM modules of the same MHz timing to have a total of 8 GB.

Motherboards - P5QLD PRO

If you are not sure of what your RAM timings are, then the free program Speccy can help show what they are.
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Wish to upgrade my memory in my desktop by a further 2 Gb. Currently have 6 Gb of DDR2 800mhz memory in a Advent Centurion cq9204. problem is dunno how many pins the memory sticks have, it aint written anywhere on them.
Any thoughts.

A:Ddr2 ram

you currently have 6gb of ram, what are you doing that you require another 2GB? for majority of people 4GB is enough. So unless your doing some heavy photoshop graphics your probably wasting money on more ram, you may want to use that money toward something else to see more of a performance increase.
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hi guys i have just been given a nvidia 8500gt 512mb videocard.the specs say it is a ddr2 pc has ddr1 ram.will it work with my pc?.p.s.sorry about lack of info .xp sp2.


Memory on the video card has nothing to do with memory on the computer.

Please be aware that the 8500 is not a gaming card... unless the games were made before 2004.
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I have a budget emachine T desktop I just bought for my son It has the P HT and has DDR ram with Vista Of course it s slow I d like to max out the Ram to gb I m unsure about the correct ram to buy I see PC - DDR2 Ram and up I also see up to MHZ The PC doesn t DDR2 Ram specify these figures Just don t want to buy better ram than the machine supports Does it still work even if it s better than what s in the machine There s slots with in each that I guess become useless because I hear for DDR to work best matched sticks are preferred I see deals all over the net for gb kits for around any brands to stay away from I saw G Skill gb DDR SDRAM mhz pc - for free shipping at newegg I know it s not a good machine but for including a printer and quot flat CRT I simply couldn t find anything comparable I think it might actually work OK with more ram Any input would be appreciated nbsp

A:DDR2 Ram

RAM will only work at the FSB of the motherboard, or at the speed of any slower RAM fitted. Fitting faster RAM will not make it run faster than the FSB of the motherboard.
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From what I've hard it needs DDR or DDR2 ram but which kind will work on this machine?

A:Do I need DDR or DDR2 Ram?

From the gateway site it uses pc2700 ddr memory.
BTW if you input the serial number into the gateway site, you can see everything you want to know about that system.
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Q: Ddr2

Hi, lately i have been hearing that the DDR2 RAM has been becoming standard...Can someone explain to me why? I always though that DDR4 was the more advance ones.


i think you're being confused with DDr4 with ddr 400. DDR400 is basically ddr. With 2700 and 3200 version etc...

DDR2 is faster.
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First off I'd like to thank loserOlimbs for his help in my last issue.

OK, it's just a quick question. I have 1 gig of dual channel(512x2) DDRII 667 and I was wondering if it is OK to put it in a DDRII 533 motherboard?

I'm at work, so I don't know when I can respond. Thanks.

A:DDR2 667 to 533?

Yes, it's okay.
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For My PC
I have 1 2gb of 667 mhz ddr2 and 1 2gb ram of 800 mhz ddr2... What is the RAM operating speed ?

Also tell me i need to upgrade to 6gb RAM on my desktop !!!
i wanna buy another 2gb ram ddr2 coz my dg33 fb supports ddr2
which shud i buy ???

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What would be better from these two??


one of them is DDR and the other DDR2.....and how come the DDR2 is cheaper???

Thanks for your help!

PS: can i use a SATA drive drive to boot up a computer? or does it have to be IDE?

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what exactly is the difference between ddr and ddr2?

is it that ddr2 has 2x the bandwith?

and which one is better/faster?

A:ddr vs ddr2?

Hi. Here is something to read that will explain it better than I can.
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(Don't know how much of this you need to know but...)

I'm about to buy a new machine with an Intel LGA 775 Pentium 4 /D CPU
and a P5RD2-VM motherboard. It's coming with 512MB of DDR2 SD RAM and it says PC4200(?)

I've got 256MB of DDR RAM (PC2100, CL2.5) from my old machine and I was wondering if I can combine them?

I'm expecting a short answer 'no', long answer 'noooooooooo' here!


A:Can I use my old DDR RAM with my new DDR2 ?

No, DDR2 has a different pin count than regular DDR, not to mention different clock speeds. In all essence, you wont even be able to get DDR1 to fit in a DDR2 slot without alot of breaking things.
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i currently have installed ddr2 ram 533 mhz ,i now want to install a ddr2 ram 667 mhz can i operate both of them together?

A:different fsb of ddr2 ram

Hello and welcome to Techspot.

It`s not considered to be a good idea to mix ram speeds, as it can cause stability issues on some systems. However, there`s nothing to stop you from trying. Please be aware that the faster ram will automatically be downclocked to the speed of the slower ram.

Regards Howard :wave: :wave:
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ok this is about to drive me crazy. I already ordered this mobo and some corsair xms 4-4-4-12 ddr2-800 rated at 2.1v. alot of people have been saying the mobo only goes to 1.95v on the ram and therefore alot of memory incompatibilities. but yet a few people said they have got 2.1v ddr2 to work with setting it to 1.95v????

A:M2N-E with DDR2 2.1v??

All you can do is try it for yourself.
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I have 2 gigs pc3200 ddr 400 on my mobo and I'm looking to up grade my ATI 9550 256mb AGP card, which has DDR mem.

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If not what AGP card would be a better upgrade?

A:DDR and DDR2

No problem. Memory on a video card does not have to match your MB memory.
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A:DDR2 ram

Depends if the ibookg4 supports DDR2 ram, please post your current system specs
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A:ddr and ddr2?

NO. and you can't. Please bother to read the FAQs and the guides regarding ram.
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Hi, great forum you guys got here...
Just had one small question-
I have a Gigabyte 8I915P Duo Pro motherboard...and it supports both DDR and DDR2 RAM. I am currently running 2 x 512MB DDR2 PC5400 and was wanting to add some more it ok to add regular DDR memory in the slots adjacent to the DDR2? Or do I need to look at running 2 x 1024MB DDR2 in order to increase my memory? The mobo has a pair of DDR2 slots and a pair for the DDR.
Looking around the web I have yet to find a definitive answer.

Thanks in advance!

George Widener

A:Mixing DDR2 and DDR

Well, adding DDR to it, even if it will work, is bound to seriously affect the performance of the memory subsystem.

From the manual for that MB: Note:Mixed mode, populating DDR and DDR II memory modules simultaneously is not supported.

I'd say the answer is no.
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In your opinions, should i buy ddr2 800, or ddr2 667 and tweak the voltage and timings so that its as good as 800?

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I had been gone over the past week online to find that my brother wanted to play the LotR O beta and that he decided I didn t have enough RAM Long story short he forced two sticks of DDR s in my DDR slot When he powered on he said he heard something that sounded like a woman s voice saying CPU failure but he s not really sure what he heard of even if he heard the actual term quot CPU quot I could still smell that electrical-burnt smell when I got home After finding out what happened and weeping for my computer I pulled out the two incompatible sticks and powered on Nothing posts to my monitor but the machine sounds like it s running fine with one exception No POST beeps from my motherboard Is the problem now the Motherboard the CPU or the RAM or Power supply or etc I swapped in a different confirmed working video card Still no post to monitor I looked at my CPU There were signs of wear and it was a bit gunky but no cracks bent pins or burn marks I cleaned it off and cleaned out all the fans and heat-sinks Still nothing All things sound fine all fans run all lights are on The HDD spins at what appears to be a normal level The monitor works tested on a different machine Please into my Help! DDR DDR2 :( Bro jammed help What piece of hardware is my actual problem nbsp

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Hi Here's my system: Win 7 64b Home Premium, CPU AMD Phenom 11 X4 945 3Ghz Socket AM3 Motherboard Gigabyte GA-MA74GM-S2 Bios v. FK, Memory Crucial 4g DDR2 800

I am looking to add memory to 8g. I will need either 8g modules or two 4 gig. I am not finding reasonably priced memory for the MB. The system is not that old. What am I missing? How much do I have to spend?

A:DDR2 Memory

There's a couple of things working against us (my system also uses DDR2 RAM).

1. DDR2 is obsolete, and has been for a while. As stocks diminish the vendors are going to charge more it.

2. Even though the recent fire in the Hynix factory probably didn't affect availability of DDR2, it was a good excuse to raise prices across the board.

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I have been looking at the AGP Radeon X1650Pro.

There are a couple of versions:

512Mb DDR2 running at 800MHz clock speed
256Mb GDDR3 running at 1.3Ghz clock speed

I was wondering which is the better card, as they are around the same price.

A:DDR2 or GDDR3 ?

My choice:
256Mb GDDR3 running at 1.3Ghz clock speed

GDDR3 can reach higher effective memory clock speeds, where it's not possible for DDR2.
About the amount of memory on theses can is arguable on its performance, I would say the core/memory clocks effect the performance much more than memory increase itself.

7600GT would be something you might want to consider also...
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I recently sent my computer to be fixed at a computer store. The problem was my hard drive with xp home on it was was booting up and getting an error message. My other hard drive has vista on it which runs fine. I recieved a call from this computer place saying that 2 or more of my 512mb WINTEC DDR2 memory were broken. I have 4 sticks alltogether=2gb. I am not sure how they could have gotten broken if my hard drive with vista on it said I had 2gb in the system. Did this place brake my memory?

A:Ddr2 Ram Dead?

hello there,
well it is difficult to say if your memory was or is broke in the first place. The problem with the xp could also be caused by a corrupt or broken installation.
But is also not verified that your memory works fine if vista works fine

I would have run tests with memtest 86 before giving it to the computer place. Or just ask them how they came to the conclusion.

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what is the difference between ddr2 and ddr; and pci express and agp?????????????

A:Ddr2, Pci Express

speed and money
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Appreciate the help!!!

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If I buy DDR2 RAM chip. Will it fit and run fine in a motherboard that doesn't have DDR2 capabilities?

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hello everyone i want to upgrade my Kingston 1 GB 800 Mhz core 2 duo DG31GL have only 2 slots....can i add another ram of 2 GB of Same bus speed with a different run my CPU in a dual channel????? with a good speed using full memory? plz helppppp!!

A:RAM: TWO DDR2 of Different size but same bus

The max for that board, according to the Intel specs, is 4GB. You can add another memory module and it does not have to be the same brand. However, you need to get memory that is compatible with that motherboard and at least the same speed. Two memory modules with different speed and the memory will run at the speed of the slowest module.

HERE is the Crucial memory listing for that motherboard. Note that this board requires 1.8 volt memory. Much of the current memory available is 2.2 volt so be careful when you get the extra memory.
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Would 4GB of DDR3 be the same as having 8GB of DDR2?

Which would you rather have?

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sorry for my englesh.

A:DDR2 RAM on an old motherboard

I happen to have that motherboard in one of my PCs and it is not compatible with DDR2 RAM. DDR2 is not backward compatible with DDR RAM. For one thing the notch is in a different position so you can't physically put in in the slot.
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can anyone give me some information ? i am using asrock motherboard pt880 4core, can i use2 ddr11memory cards 240 pin into two slots provide and at the same use 2 ddr2 memory cards 184 pins in to the slots provided, in other words i will be using 2 cards of 240 pins and 2 cards of 184 pins at the same time, or do i need to use either of the 2 cards at a time?

A:DDR1 and DDR2

2 x DDR2 DIMM slots
- Supports DDRII667/533 non-ECC, un-buffered memory

2 x DDR DIMM slots

DDRII and DDR are supported separatelyClick to expand...

ie Just use 2 DDR2 Dimm cards only


DDRII and DDR2 are the same thing
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Hi all,

I currently have 3Gb of DDR2 memory, in 2 slots (1x 1GB, 1x 2GB) - however i wanted to increase this to 4GB or even 6GB. Basically i was wondering if the following factors would affect my choice:

1-Is there a limit of how much RAM i can have in my motherboard?
2-Can i cross between DDR3 and DDR2 memory in the two slots, or do i have to keep the same type in each? - (and also, whats the difference between the two)

Thank You

A:Can I use DDR2 and DDR3 RAM together?

If your motherboard currently supports DDR2, then you can only add DDR2. They're not slot compatible.

Which motherboard do you have? Most modern motherboards should support 4 to 8GB of RAM.
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I have a chaintech 7NJL6 mobo running XP Pro with SP2. Manual says to use 184 pin DDR memory up to PC 3200. I have 512 MB (2x PC2700) now. I have read that faster memory will adapt to a slower mobo so I ordered PNY Optima 240 pin DDR (PC 5300) and need to know if the new memory will work for me. The pin count difference has me concerned.

Manual also says that I can load slot 1 and slot 3 to get dual channel capability. I read that slots should be filled in sequence, so am leery of skipping slot 2. Your thoughts?

I am really looking forward to the performance boost that 2 GB of RAM will give my XP machine (besides, the price was right!). Thanks.

A:240 pin DDR2 RAM in 184 pin DDR mobo

Send the RAM back, it won't work. 240 pin is DDR2, DDR2 is not compatible with DDR, it simply will not fit in the slot. You can get 2GB DDR400 (PC3200).
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Hey guys,

I could go with the tried and true Northwood core and settle for 200 MHz DDR and save some money or I could go the somewhat sketchier LGA775 route and spend more and get a computer that doubles as space heater but be able to use DDR2.

Based on the tradeoffs, what would you go for?

Thanks much!


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Hi this is my first post in this forum but i have been visiting techspot for for quite some time now and i have to say it is nice place to learn and read about computers I am about to get q to replace my e I have overclocked e ghz and i am going to overclock q when i get it But the problem is my Ram I have x gb ddr mhz ram two sticks RAM voltage DDR2 and OC of patriot and one transcend To be sure my Ram will DDR2 RAM voltage and OC work fine with q i tried them out to DDR2 RAM voltage and OC see how high i can push them On my dissapointment i just cant get them stable higher then fsb Which doesn t make much sense as i have been running them at for some time and even mhz on auto voltage If i change increase timings system doesn t start and it says oveclocking failed right now i am at volts Default i think The only stable timings are - - - I read this about ddr ram According to JEDEC the maximum recommended voltage is volts and should be considered the absolute maximum when memory stability is an issue such as in servers or other mission critical devices In addition JEDEC states that memory modules must withstand up to volts before incurring permanent damage although they may not actually function correctly at that level Wikipedia Click to expand So could i push my cheap ram to volts Please don t tell me to buy different ram or CPU I have Asus p kc MB and i read somewhere it doens t like overclocking ram thnx for help nbsp

A:DDR2 RAM voltage and OC

Hi wert56boom
if you are OC'ing via an FSB push, the weak link can be any component or chipset. the fact that you have mis-matched ram modules could be a likely suspect. is you are at 2.1 now...I would stop just shy of guaranteeing you that 2.3 will not give you stability, and probably burn up your ram. A few of the high performance brands have an overvolt guarantee up to 2.1v Take what it will give you @ 1.9v and call it good unless you are prepared to replace it.
I would try removing the lone Transcend module and see if that yields better results. you will lose 1 Gb fd ram, but gain dual channel until you get different memory. and it will let you know if the mixed modules are the limiting factor. The 880-890 Mhz you are referring to is the effective DDR rating 2x400Mhz = 800Mhz DDR2
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I'm just wondering what an ideal DDR2 RAM timing setting would be with my computer. Currently I'm running them at 4-4-4-12.

Thanks, Alex.

A:DDR2 RAM timings?

just go with what it says on the sticker; use the corresponding voltage too. if the modules don't have stickers just use the by SPD option or Auto setting in BIOS. there is no ideal settings, memory kits differ by brand and speed.
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It's been a long time since I actually bought/installed any hardware of dignity and am, nowadays, a little lost when it comes to choosing what to buy.

I have a PC with an Intel 4 (Prescott) 3.60GHz CPU with 2x 512 Mb of DDR-400 (PC-3200) (max frequency 200MHz) installed (the manucaturer is Micron technology), the CAS latency is 3.

I'd like 2Gb total of ram and I'm wondering a couple of things;

1. I can't very well use DDR2 or can I/should I?
2. Should whatever memory I buy have the same CAS latency and frequency?
3. Should I buy a 1Gb and keep my 2 512's or should I buy 1 2Gb or 2x1Gb?

Thankful for any useful tips

A:DDR or DDR2 and other questions about RAM

Im not sure if the amazing people here at techspot can answer this without knowing what your motherboard is. I AM NOT AN EXPERT, I KNOW LITTLE OF MEMORY, but I will try to answer these questions.

1. I can't very well use DDR2 or can I/should I?

Depending on what your motherboard suports you should be able to use DDR2. DDR3 Is new in the market but still costs a lot, and your motherboard may not suport it so I would stick with DDR2 unless you have a couple hundred to spare.

2. Should whatever memory I buy have the same CAS latency and frequency?

I dont think It has to be the same but I would recommend not switching it up to much becuase of errors that may start occuring, buying a pack of ither 2x 1GB or 2GB would probably be best.

3. Should I buy a 1Gb and keep my 2 512's or should I buy 1 2Gb or 2x1Gb?

Im not sure if this has any effect on performance but as long as you have a total of 2 GB I dont think it matters, but I would either try to keep my slots free and go with the 2 GB stick, or spare the memory you already have and add on 1 GB. I would just be aware that If you keep the 2x 512's and buy a new 1 GB stick there might be errors due to the differences.

Again dont make and major dessicions baced on my responce because for all I know everything I've just said is completely wrong.

Anyway hope this helps.
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Is it possible?
i saw the his hd4650 ddr2 card hes
600 core clock
800 memory clock

And the normal hd4650 hes only
600 core clock
and 400 memory clok

how it could be?

A:His hd4650 ddr2 vs hd4650 ddr2

usually the memory clock differs if the system uses different module i.e. DDR2 vs GDDR2.
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i have a mach speed p4mst-890 mother board. it will take up to 4gb of memory. ddr2 533 memory. but the memory i've looking at does not say whether it is high or low density. the manual does not say which...... so would hi or low work in my system.... thank's......

A:memory ddr2

High density memory is basically factory seconds that will
only function on certain motherboards at full capacity.
Always better to stick with low density.
Branded memory,like kingston,corsair,OCZ,crucial and so on
are usually low density.
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A:DDR2 vs DDR3

Yes the DDR2 modules and the DDR3 modules both have 240 pins. The keyways are in different locations so you can only install DDR3 modules in a DDR3 motherboard. DDR's highest speed is 400MHz. DDR2's highest speed is 800MHz. DDR3 highest speed is 1000MHz
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I have RAM slots in my motherboard but I managed to somehow fry one of them Now I m stuck on gb and I m feeling it every day I d like to upgrade to gb but I haven t been able to find any Even when someone sells gb it s usually just bars of gb Now I ve googled around and saw a few places online that sold them but they were usually for or more I m not into that kind of money and seeing how DDR is dying I wonder if I can manage to get some used RAM for a cheaper price The problem is apparently a lot of those gb in one stick are for servers and will not work for desktop PCs Furthermore I have no idea how to check if the desktop 4gb for in RAM PC DDR2 one a bar RAM I found will fit work in my PC So if anyone has 4gb DDR2 RAM in one bar for a desktop PC a few minutes spare and maybe find some for me I 4gb DDR2 RAM in one bar for a desktop PC d 4gb DDR2 RAM in one bar for a desktop PC really appreciate it I don t know what information you need to know so ask me anything My motherboard is nVIDIA NF-MCP Socket AM nbsp