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P5B Deluxe X7 Multiplier Help..... - Page 2

post #11 of 13
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Quote:
Originally Posted by FrankenPC
Hmmm...the P5B Del. is rated to run DDR21066 (Crucial? I think). I'm running GSkill DDR2-1000 with native timings of 4-4-4-5. So, I'm not Ocing the RAM at a FSB of 2GHZ (1:1 = 500MHZ). My PSU is 550W and my GPU draws no power (My rig is only for folding).

One thing I have noticed that is really weird about the board. If the POST voltage level on the CPU is below 1.45v it might not boot. Also, when I monitor it in CPUz, the CPU voltage level fluctuates between 1.21v and 1.46v. Sort of randomly. If I crank up the CPU voltage to 1.45 or higher, the fluctuation stops and CPUz reports a solid 1.21v. This is with both cores at 100% utilization. I wonder if it's a BIOS glitch. Maybe the voltage isn't being regulated properly.

Did all that rambling make any sense?
Word of warning....If CPU-Z is reading 1.213 you have more then 1.5V on the CPU. Are you using Auto in the CPU VCore setting in the BIOS....Don't do this because it is scaling the voltages to the CPU relative to the FSB. Check out my thread on this...Use PC Probe or something else for CPU VCore readings.
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post #12 of 13
Quote:
Originally Posted by mtuccio
Word of warning....If CPU-Z is reading 1.213 you have more then 1.5V on the CPU. Are you using Auto in the CPU VCore setting in the BIOS....Don't do this because it is scaling the voltages to the CPU relative to the FSB. Check out my thread on this...Use PC Probe or something else for CPU VCore readings.
No, I never use auto. I try stock then I up the voltage until Windows boots. Then I heat it up and adjust from there. Currently, my 6600 is sitting at 1.45 and 3.4ghz (8x). It's water cooled. But, I'm not watercooling the NB. It's using the built in heatpipe. Since you have nearly the same setup I do. What are your current Mobo and RAM settings? Did you post a CPUz screenshot somewhere?

EDIT: NM...I see them as attachments on the thread starter. I'm going to try and replicate your settings. Drop my core to 4.250 and put the NB at 1.55
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post #13 of 13
Try what this guy did: http://www.xtremesystems.org/forums/...=112303&page=2


Notice though, that's with a x6 multi and a 3.15ghz speed but at 3.5xghz+ the CPU requires something like a 1.55 or 1.60v in the BIOS to boot at or over those speeds. I tried the 500x7 myself but it didn't work and never tried a 1.5xx+ for Vc.
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