i7 860 voltage at 3.36

slugman

Member
May 29, 2010
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OK so just a quick voltage question for the i7 860:
Overclock is stable at 3.36 with turbo off and power saving features on.
To be clear thats 160 bclk with 1600mhz ram set at 10x and 9-9-9-24 timings (manufacturer spec). RAM at 1.68V

Vcore is set to normal, with dynamic vcore set to auto.

LLC enabled.

CPUz says my CPU is getting 1.12V at load.

This is just slightly more than stock, where it gets 1.104.

Temps are 70C running linpack, prime95.

at idle voltage goes all the way down to .864V

Is this OK? Too low? Not noticing any problems with operation, but don't want to damage the CPU.

Linpack numbers are right where I'd expect at 42-43Gflops.

Is there any danger in the voltage being too LOW?

Thanks!




EDIT: LinX fails after 10 or so passes. Restarting LinX yeilds 15% performance decrease (37 Gflops @ 3.36 Ghz). Woah. HW monitor reporting CPU using 207W instead of the previous 233W at that clock. Something weird. Anyway, back at stock everything seems fine, 38 Gflops, 34 passes cleared and counting. CPU using 200W as expected... Probably the voltage was too low?
 
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slugman

Member
May 29, 2010
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But- so long as its stable - no risk of damage?

I had one of the CPU temp sensors read 99C for one reading then return to 68 with the others during LinX testing. CPU didnt seem to throttle and I didn't even have time to click stop. Hasn't happened since. Might not even be related to the overclock?

Anyway isn't 3.36 supposed to be a very mild overclock?

I seem to be having more difficulty than most.

What are other people running as voltage on 3.36? Is 1.12V too low?