2600k high vCore needed to OC

I

iniquiTrance

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May 2, 2012
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I've been trying to OC up to 4.5 GHz, and took the vCore up to 1.41 without reaching stability under Prime95. I currently am stable at 4.3 GHz with 1.34 vCore. Does it seem reasonable that I'd have to go above 1.41 vCore for 4.5 GHz? Based on viewing others' reports, it seems this is quite out of the ordinary. Would the fact my RAM timings are 9 9 9 24 N2 have anything to do with it?

I checked CPU-Z while running Prime95 at 1.41 vCore, 4.5 GHz (It would only run for ~10 secs before locking up), and saw core volatges at sub 1.29. This tells me it might be vdroop. Does that sound likely? If so, any idea how to correct for that?

Any help is much appreciated.

CPU Core i7 2600k
Motherboard And BIOS Version ASRock Extreme4 Z77
Memory G.Skill Ripjaws 8 GB (9 9 9 24 N2)
Power Supply Corsair 650W
Graphics Galaxy GTX 460
Case And Cooling CM Storm Sniper/ Hyper 212+
 
Try disabling HT. On my 2600K I can only get to 4.4 with reasonable Vcore (1.38 + load line level four) that hits 1.4 maximum on load.
 
Every chip is different. It could be that yours isn't that great. I would imagine you have LLC somewhere in the bios for that board if you think it's droop, though.
 
I tried LLC 1, and it's now running a stable 4.5 GHz @ 1.34 vCore. Gonna see how low I can take the vCore.

I also set the short/long term power duration to 250.

Thanks for the responses.
 
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