Testing / comparing : Intel D975XBX2 / Asus P5B DX ***56K WARNING***

[shimmishim]

Hmm, anyone with Revision 505 have their vDIMM set at 2.20 or higher on this board? Someone with Ballistix DDR2-800 would be even better

I just tried to boot at 233 reference frequency and 667 memory frequency, but nothing worked. I tried 5-5-5-15 from 2.16 up to 2.24 volts. I don't want to go over 2.24 just to be safe for now. None of them booted.

Also tried 3-4-4-12 on 233/533 frequency from 2.16 to 2.24 volts. None of them work as well.

I'm running at 4-3-3-4 on 233/533 frequency for now at 2.16 volts. I can't decide between the current setting or 4-3-3-5. I keep refreshing in Everest and the 4-3-3-4 scores seem all over the place while the 4-3-3-5 scores seem more constant and often times higher. Guess I will have to run a few SuperPi tests to see.

what fsb are you trying to run?

i managed 370 4:5 4-4-4-10 463 with vfsb 1.3 vmch 1.6 vdimm 2.24

i've measured the vdimm and it overvolts by about 0.03-0.04 so be aware of that.

when i got my e6600 which is capable of 3600 @ 9x400, i tried to stabilize 400 4:5 4-4-4 and 5-5-5 500FSB with vfsb up to 1.45, vmch up to 1.75, vdimm up to 2.3 but could not get it stabilized.

this is why i'm asking what fsb you're running at.

[MuttonFlanks]

what fsb are you trying to run?

i managed 370 4:5 4-4-4-10 463 with vfsb 1.3 vmch 1.6 vdimm 2.24

i've measured the vdimm and it overvolts by about 0.03-0.04 so be aware of that.

when i got my e6600 which is capable of 3600 @ 9x400, i tried to stabilize 400 4:5 4-4-4 and 5-5-5 500FSB with vfsb up to 1.45, vmch up to 1.75, vdimm up to 2.3 but could not get it stabilized.

this is why i'm asking what fsb you're running at.

I'm at 360 FSB with 1.3500 vCore and everything else stock. Does raising FSB or the voltage for FSB and MCH help with RAM overclocking? I though it was just vDIMM.

I can get to 400 FSB with around 1.4vCore but my temps are pretty high for some reason and I'm not comfortable with it.

[Lome]

I'm at 360 FSB with 1.3500 vCore and everything else stock. Does raising FSB or the voltage for FSB and MCH help with RAM overclocking? I though it was just vDIMM.

I can get to 400 FSB with around 1.4vCore but my temps are pretty high for some reason and I'm not comfortable with it.

mine wont do ddr1000 without putting the mch at 1.7 in bios
my ram is rated for that speed, vfsb is more for cpu clocking.

[shimmishim]

mine wont do ddr1000 without putting the mch at 1.7 in bios
my ram is rated for that speed, vfsb is more for cpu clocking.

i wasn't able to get my mem 1000 even with 1.7.

i was thinking about doing the vmch mod for this board to get to 2.0.