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P67 Mega Vdroop after S3 Sleep

post #1 of 6
Thread Starter 
GA P67 UD4 board with a 2500K, great build, stable at 4.6Ghz 1.36V, very very fast!

But cannot get my head around a problem with S3 sleep.
I think it is tied to Load Line Calibration but may be wrong, but will try to explain why i think so.

Boot to windows at 4.6Ghz, 1.36vcore, and LLC DISABLED.
HWmonitor shows vcore at 1.36, apply load with Prime 95, vcore drops to 1.28 and either core fails or BSOD.

Boot to windows at 4.6Ghz, 1.36vcore, and LLC ENABLED
HWmonitor shows vcore at 1.36, apply load with Prime 95, vcore hovers around 1.36, totally stable for hrs, happy days!

Now for my problem
Boot to windows at 4.6Ghz, 1.36vcore, and LLC ENABLED
Totally stable as above, put system to sleep (S3), resume, apply load with Prime 95, vcore drops to 1.28 and either core fails or BSOD!!

So it looks like LLC is not being re enabled when i resume from sleep. Is this possible? Has anyone any experience or even better a fix?

Love my new build but this is a thorn in the side as i am used to using S3 sleep all the time.
I have a thread going on the Gigabyte tech support forum but its slow going.
Edited by tgawn - 5/9/11 at 1:34pm
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post #2 of 6
I think it has to do with PLL Overvoltage. You need to disable that. But the problem is, your OC might not be stable without in enabled. It's a P67 issue, and I hope it gets resolved quickly.
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post #3 of 6
Thread Starter 
Forgot to say, the PLL overvoltage seems to cause alot of problems for folk, so i have always had it disabled, but i still have the problem.
Thanks anyways
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post #4 of 6
Quote:
Originally Posted by tgawn View Post
Forgot to say, the PLL overvoltage seems to cause alot of problems for folk, so i have always had it disabled, but i still have the problem.
Thanks anyways
Well, sorry I can't be of help. I am a P67 noob, but not for long...my P8P67 is in the mail inbound.

But one thing I will say is that some people can't get a very high OC with the PLL overvolt disabled, so maybe you are in that same boat. Try 4.4 and see if it will sleep/wake properly.
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post #5 of 6
What BIOS are you using? Try flashing to the newest BIOS from here:

http://forums.tweaktown.com/gigabyte...beta-bios.html
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post #6 of 6
yea you need to update your BIOS.
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