Slow superpi times with e6400

gobucks

Golden Member
Oct 22, 2004
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Today i got my pc parts in the mail; an e6400, a ga-965p-ds3, and OCZ 2GB PC2-6400 ram. The OCZ was a no-go; i kept getting BSOD all over the place, even after i loosened the timings and upped the VDIMM to 2.2V. So i tried the cheap 512MB stick of DDR2-533 i had laying around. I managed to get the cheap RAM running at 730MHz using 6-6-6-15 timings, single channel obviously. This translated to 2.93Ghz for the e6400, the same as the X6800. So I'm RMAing the OCZ and getting some Corsair, which i've heard works better.

Anyways, i looked at 8MB times for the X6800, and it was like 220s, versus 254 seconds for my overclocked e6400. non-overclocked times were also slower - like 336s for my e6400 versus 298s for a stock e6400. Obviously it isn't just the cache difference that's causing the difference.

My question is, can the smaller amount of RAM, single channel, and looser timings cause that big of a difference? I was under the impression that that kind of stuff only caused small performance drops in superpi. i'm really hoping there isn't anything else slowing my PC down, and that my times will be nice and fast when i get my Corsair.
 

Duvie

Elite Member
Feb 5, 2001
16,215
0
71
Ram does make a difference in scores...Less evident when ppl just run 1M all the time, but when I ran 32M I could fluctuate almost 1 minute by using ram dividers, cas timings, etc....
 

thilanliyan

Lifer
Jun 21, 2005
11,864
2,066
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Originally posted by: gobucks
Today i got my pc parts in the mail; an e6400, a ga-965p-ds3, and OCZ 2GB PC2-6400 ram. The OCZ was a no-go; i kept getting BSOD all over the place, even after i loosened the timings and upped the VDIMM to 2.2V. So i tried the cheap 512MB stick of DDR2-533 i had laying around. I managed to get the cheap RAM running at 730MHz using 6-6-6-15 timings, single channel obviously. This translated to 2.93Ghz for the e6400, the same as the X6800. So I'm RMAing the OCZ and getting some Corsair, which i've heard works better.

Have you tried updating the bios to the F4C version?? There were some ram issue fixes in that bios.
 

TheRyuu

Diamond Member
Dec 3, 2005
5,479
14
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Yea, the DS3 has some problems with OCZ ram.
I've heard there are some fixes but I don't know of any myself.

Better to just RMA?
 

gobucks

Golden Member
Oct 22, 2004
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yeah, i just RMA'd them, and i ordered some Corsair PC2-6400 CL5 memory. I've had good luck with corsair and i hear they have good compatibility with the board.

also, with the cheap RAM i managed to get it to 750MHz, 5-5-5-12 timings, and that dropped my 8MB time down to 239s, so I'm getting closer. Hopefully the extra, faster RAM from Corsair will close the rest of the gap.