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i7 950+Rampage III Extreme unstable at 4ghz?

post #1 of 3
Thread Starter 
I overclocked my i7 950 to 3.7ghz with no problem, its very stable. I then overclocked it to 4 ghz (175*23) and i keep getting a voltage alarm in PC ProbeII. It goes from 1.36v and drops to .6v making the alarm go off but 5 seconds later, it goes back up to 1.36v by itself. Does anybody know why this happens or what I can do to fix it? I would really like to get my i7 950 stable at 4ghz.

Here is a link to my CPU-Z validation
http://valid.canardpc.com/show_oc.php?id=1787749

and here is a screenshot showing my temps and PC ProbeII (before the alarm)

Note that the temps were during a Prime95 stress test that was running for about 30 minutes before I took the screen shot.

Thanks for any help.
post #2 of 3
Do you have line load calibration turned on? Its common to have vdroop during load, LLC helps to minimize that. Just because it drops though doesn't mean that the board isn't stable, try running Prime95 for several hours and seeing if you get any BSOD or failed workers.
The Laptop
(6 items)
 
  
CPUGraphicsRAMHard Drive
Intel i7 2860QM AMD Radeon HD 6770M Corsair Vengence 1600MHz Samsung 840 Pro 256GB 
OSMonitor
Mac OS X 10.8 1680 x 1050 anti-glare high resolution  
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The Laptop
(6 items)
 
  
CPUGraphicsRAMHard Drive
Intel i7 2860QM AMD Radeon HD 6770M Corsair Vengence 1600MHz Samsung 840 Pro 256GB 
OSMonitor
Mac OS X 10.8 1680 x 1050 anti-glare high resolution  
  hide details  
Reply
post #3 of 3
Thread Starter 
Quote:
Originally Posted by appleg33k85 View Post
Do you have line load calibration turned on? Its common to have vdroop during load, LLC helps to minimize that. Just because it drops though doesn't mean that the board isn't stable, try running Prime95 for several hours and seeing if you get any BSOD or failed workers.
Oh, I thought that if the voltage drops, it was unstable. Lol im new to overclocking as you can tell. Ill check the line load calibration. Thanks!
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