DDR2-667 Vs DDR2-800

August 14, 2006 at 11:45:40
Specs: XP, 4600+X2
Can anyone tell me if there is a big difference in speed in the 2 frequencies. My motherboard says that it accepts DDR2-800 but when i put it in it doesn't work. When i change the frequency to DDR2-667 it works perfectly. All over the mobo box says that it takes DDR2-800 but mobos that can run DDR2-800 have to use 2.0v+ to use it and the asus m2n-e only goes up to 1.95v

See More: DDR2-667 Vs DDR2-800

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August 14, 2006 at 11:54:06
It would be nice to know what motherboard we are dealing with here.

The internet is a series of tubes!

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August 14, 2006 at 12:00:03
Go to the following site, left column, click on "QVL Download"


"All over the mobo box says that it takes DDR2-800 but mobos that can run DDR2-800 have to use 2.0v+"

RAM voltage requirements vary depending on the RAM. Some runs at 1.90v, some at 2.0v, some at 2.1v, & others have a range that it can be run at. Look at your RAM specs.

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August 14, 2006 at 12:00:57
Actually, it would be nice to know what RAM we're dealing with ;)

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August 14, 2006 at 12:18:06
We are dealing with the Asus M2N-E nForce 570 Ultra


2GB Kit DDR2-800 PC2-6400 Gold Gamer eXtreme XTC Edition Dual Channel Memory

The ram requires 2.0v to run DDR2-800 and the motherboard, when in the BIOS menu, only allows me to select 1.95v at the highest setting.

I keep calling ASUS and they tell me to call OCZ and I call OCZ and they tell me to call ASUS =/

When talking to ASUS I asked the man if there was a BIOS update that allowed my motherboard to run 2.0v or greater and he said yes, but its quite possible he didn't know what he was talking about. I've been to the ASUS website to checkout their BIOS updates and I don't see my motherboard model listed anywhere.

What do you guys recommend I do?

Just run it at 667mhz or BIOS update. If there isn't much a speed difference between 667 and 800 I won't run the risk with a BIOS update. But I did pay for 800mhz...

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August 14, 2006 at 12:32:34
I already gave you the link to your motherboard. The only BIOS version available is BIOS 0203 & all it lists is added CPU support.

If you did what I suggested in response # 2 you'd have found that OCZ RAM isn't on the Qualified Vendors List.

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August 14, 2006 at 12:39:09
Yeah I saw that Jam, thanks.

But the problem is I already bought this RAM. This is my first build so it is a good lesson for the future.

The RAM does work on DDr2-667 but like i said thats not what I paid for. You think I should return the OCZ and get the Corsair that is compatible? Or is there little difference between the 667mhz and the 800mhz for me to not even bother paying a 15% restocking fee and compatible memory?

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August 14, 2006 at 13:42:27
If I was you & considering it was my mistake, I wouldn't bother - not with a restocking fee.

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August 14, 2006 at 16:01:19
there isn't a diff to where you will notice it.

AMD Athlon 64 X2 4600+ OC 2.7ghz
2GB Dual Channel DDR 3200
Nvidia 7900GT
SATA II 2x 200gig 7200rpm 16mb cache RAID-0
Gigabyte Nforce 4 SLI

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August 14, 2006 at 17:21:42
Ok thanks for the help guys!

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