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Difference between ddr 2 400 and 800?

Last response: in Memory
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July 4, 2010 11:17:12 PM

Hey,

Currently trying to help upgrade my brother's computer and thought I'd start with the memory, since he only has 2gb in there. It seems that the mobo (http://www.newegg.com/product/product.aspx?item=N82E168...), can accept ddr2-800(pc6400). But my brother currently has 2gb gskill ddr2-400(pc3200). Would there be a big improvement if I just i took out the old 2gb and replaced it with 4gb of the ddr2-800, or there isn't that big of a difference and that I should just buy 2gb more of the ddr2-400?

Thanks in Advance!

More about : difference ddr 400 800

a b } Memory
July 5, 2010 8:54:43 AM

difference between 400 and 800 will be a little, but not huge. It won't be like 30 frames per second vs 15 frames per second. It'll be more like 30 FPS vs 25-28fps.

What is he doing with the computer?
What are the computer specs?
cpu
motherboard
graphics
processor
powersupply
harddrive
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a b } Memory
July 5, 2010 3:11:48 PM

You say you are going to upgrade the whole system? Well what are your upgrade plans? We need to know what you are shooting for in the end to make a suggestion that is going to be beneficial at all.
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July 5, 2010 6:02:09 PM

@jitpublisher: I'm planning to slowly help him upgrade his computer by starting with his memory, then probably his CPU, then his PSU and GPU.

@blckhaze: He mostly plays video games and does his own content editiing( own recorded gameplay, etc.)

His specs are: CPU: Athlon 64 X2 4600+ (2.4ghz)
Mobo: Asus M2A-VM
GPU: Nvidia 9600 GSO
PSU: CoolerMaster 500W
Hard Drives: 500gb WD
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a b } Memory
July 5, 2010 9:08:20 PM

Right now his playing field is about the size of his bedroom... Upgrading that motherboard would make it the size of a football in comparison, with todays motherboards. The board is kind of slow, not many options and it isn't going to last that much longer if he wants to keep playing the latest games, especially since he's a fraps gamer. That's my opinion anyways.

Working with that motherboard only, and if you don't want to upgrade the motherboard first, then just 2 more sticks of DDR 400 would be decent. That would be his best upgrade. I wouldn't spend any money on 4gb of DDR800, because when you get a new board you'll be looking at DDR2 1066, or maybe even some DDR3. Also, a fast harddrive.. like a velicoraptor, would make some noticable diifferences on loading files (his videos) loading games and different load screens within the games, and also booting windows. Once you have done that, then your next mandatory step would be to up the motherboard and THEN the CPU and THEN a beastly graphics card which would probably require a new PSU.
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July 6, 2010 6:39:37 PM

Hmmmm....should think about that first, because we're on a tight budget. I was wondering, is it possible to mix and match different memory speeds, such as 2gb of the ddr2-400 and 2gb of the ddr2-800? Or is that asking for problems?

Thanks
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a b } Memory
July 7, 2010 5:21:31 AM

The 800 is going to run at 400. The slowest DDR will take control of the overall speed, and its not even that simple. The timings have to be dead on identical or you're risking unstable ram.

What is the timing of the current ram? If you're not sure, download CPU-Z and see what that says... or go into bios and look there. You'll want to match those timings if you're going to add ram with the current stuff
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July 10, 2010 4:46:50 PM

Ok, I'll have to check those out first, because I saw a deal for 2gb of memory. But I'll make sure if the timings are the same.

Thanks
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July 13, 2010 5:14:01 PM

Hi, to continue on the topic of memory. I think I've decided to look for a new mobo first. But a simple question regarding DDR3. Is a mobo that supports DDR3, backwards compatible with DDR2 memory? Since they both have the same 240-pin setup. Just making sure, so if it isn't, he can save up for buying both the new mobo and ddr3 memory.

Thanks!
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July 14, 2010 3:51:37 PM

DDR3 and 2 are not compatible in anyway.
I recommend a new mobo with DDR3 1600 mhz 8/8/8.
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July 15, 2010 4:13:41 PM

Ok, I'll tell him to save up for both.

Thank you for everyone's input!
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July 15, 2010 4:13:52 PM

Best answer selected by darkslash_323.
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