4930k - VRM cooling defintely helps.

cyclone3d

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So I have been fighting to get this 4930k stable at 4.5. Adding voltage was not seeming to help, and adjusting other voltages besides the CPU voltage was not helping either.

So I started looking around and saw a mention of VRM cooling on the ASUS ROG overclocking guide for IB-E.

So I loaded up Prime95 and waited a little bit and did a finger temperature test on the VRM heatsink. It was burning hot.

After digging around in my fan box, I put a fan blowing on the VRM heatsink, and all is well now.

I have so far dropped the CPU voltage from 1.3 to 1.25, and suspect I should be able to go lower. Before it would Blue screen right away at anything below 1.3 when I loaded up the small FFT test on Prime95.

EDIT: Looks like 1.20v is the sweet spot for 4.5Ghz. I tried 1.175, but it failed. Also have the RAM running at 1866 now.
 
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