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I7 860 overclocking set-ups

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March 10, 2010 5:20:08 AM

Hello everyone,

I wanted to see if people can post there i7 860 setups. All voltages in the BIOS, and hardware would be helpful.. I am running a Gigabyte p55a-ud4p and I cant seem to get a stable overclock over 3.76ghz. I have been trying lots of different voltage combo's and stress testing, but I am not having any luck. Thanks in advance.

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March 10, 2010 6:25:09 AM
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March 11, 2010 5:05:08 AM

Thanks, this is very helpful
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March 12, 2010 2:32:05 AM

I have the same setup for my work computer, and am running stably at 3.8. voltages are relatively low and all c-states, etc. are still enabled. I also can't seem to get stable above 3.8 no matter what I do (within reason). Just seems to require too much voltage/temperature to get above 3.8.

I'll try to remember to post the settings tomorrow when I go into the office.
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March 12, 2010 3:24:55 PM

supersport said:
Hello everyone,

I wanted to see if people can post there i7 860 setups. All voltages in the BIOS, and hardware would be helpful.. I am running a Gigabyte p55a-ud4p and I cant seem to get a stable overclock over 3.76ghz. I have been trying lots of different voltage combo's and stress testing, but I am not having any luck. Thanks in advance.

My equipment is similar, same motherboard. I found 3.8 to be unstable with levels of power I was willing to use. I have no doubt that I could have stabilized it easily if not restrained by intels spec for Vtt. I prefer to keep temps/power dissipation low, and enjoy a moderate overclock. Currently running several configs, depending. My favorite is 160x22, ram at x10 using 7,7,7,24,32 memory settings. This with vtt=1.21, vcore=1.28125 (LLC Disabled), vpll=1.086, vdimm=1.6. This configuration gives me 3.5ghz at the cpu, fastest and tightest my ram can go, and really solid stability, tests under LinX over 8 hours, no errors with 4gb of memory selected. I may still be able to lower vcore further, testing is still ongoing. High temps after 8 hrs of LinX, 69C.
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March 12, 2010 9:00:35 PM

@bob5568:

Try lowering your Vtt. It is way too high for BCLK=160.

I have no problem at all in getting my system stable for more than 30hours under prime95 with 1.14V Vtt and 180MHz BCLK.
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March 13, 2010 3:20:25 AM


Thanks Andy, good catch. It was a left over from when I was pushing bclk as high as it would go.

Now I'm at vtt 1.15, and vcore 1.25. also vpll down to 1.8 so far so good. I'll run LinX over night.
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March 13, 2010 3:39:26 AM

Good luck!
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March 20, 2010 1:23:16 AM

I think one other reason I maybe having stability issues over 3.8 is that I am running my mem timing pretty tight 7,7,7,22 @1504Mhz. I think I would have better luck if i drop the mem multiplier down and raised the BCLK, but i am not sure how much real world performance that would add, especially if it starts to run hot with more and more vcore and vtt being through at it.
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March 20, 2010 2:47:24 AM

RAM shouldn't be the problem if you set the timing, frequency and voltage according to the specification.
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April 8, 2010 3:43:07 AM

Best answer selected by r_manic.
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