4ghz i7 860

[Fudd Rucker]

Since ive gotten my watercooling loop to work properly, I thought I would start a thread to discuss i7 860 overclocking.
Settings
Vcore - 1.381
VTT - 1.36
DRAM - 1.68
PLL -dont remember, will update when im done playing with P95
PCH - 1.28

200 x 20 = 4ghz
DDR3 crucial 1333mhz @ 2ghz 9-9-9-24 1T

I would run OCCT on it, but for some odd reason its reading my power supply sensors wrong and promptly stops.

[Zink]

Nice, I don't know if I'll be able to cool the voltage I'll need for 4GHZ on the 860 that I have in the mail but I like the ram overclocks. Is there any 2x1GB or 2x2GB kit that is cheap and can hit 1500-1600mhz at similar timings? Mainly looking for a deal.

[Fudd Rucker]

Crucial CT12864BA1339.M8FF
Crucial 1GB DDR3 PC3-10600 1333MHz Unbuf NO-ECC Desktop - eBay (item 260555259907 end time Mar-20-10 03:00:54 PDT)


Thats the exact model of memory i have. Its a 4 x 1gb kit. Thinking about about throwing a pair of 2 x 4gb sticks in this machine to bring my total up to 12gb. About 10pm tonight I am going to bump up the multi to x21 and see about 4.2ghz and see if that will prime. Once I get my new radiator im expecting much better temps. Im wondering, what block is better - GTZ or EK supreme LT acryllic. I have both, but no 1156 mounting hardware for the GTZ and would like to use it since i bought it new and havent yet.

[matsta31]

did you use a backplate on the LT ?

[geokilla]

Post a screenshot of OCCT and the error that you're getting.

As for voltages, software reading for PSU voltages don't matter. What matters is the Vcore.

[Fudd Rucker]

OCCT crashes on me even on stock settings. Its giving me a voltage error on the 12v psu line. No didnt use the back plate with waterblock, but once i find one ill be rocking.Went through 8 hours of priming zero issues. Going to start the summit towards 4.5ghz once I get the new radiator.

[geokilla]

Originally Posted by Fudd Rucker

OCCT crashes on me even on stock settings. Its giving me a voltage error on the 12v psu line. No didnt use the back plate with waterblock, but once i find one ill be rocking.Went through 8 hours of priming zero issues. Going to start the summit towards 4.5ghz once I get the new radiator.

Hmmm can you somehow set OCCT to ignore the 12V PSU line? That definitely doesn't sound good... Maybe the others know what to do in your situation...

Prime95 for 8 hours isn't enough imo. I'd recommend 12 hours.... but that's me. You may also want to try Intel Burn Test though I find the program completely stupid and useless.

[Fudd Rucker]

I only did an 8 hour prime to establish some form of stability and I can start pushing from here, working bit by bit. Ya i set OCCT to ignore my psu voltage, but didnt work at all. Here is a shot of the graph that showed my error. All of my errors are teh exact same as well. And im assuming that Prime95 should be sufficient for stability testing.

[anthonee1230]

What kind of watercooling setup are you running?

At 1.352v Vcore and 1.25v IMC/VTT I'm getting around 70C with Venomous X + 2x NF-P12 and this is only at 185 x 21. Somehow I was hoping better results from a WC build running 200x20

[Fudd Rucker]

My loop is in my sig. The achilles heel so to speak of my loop is the piss poor radiator. Ive had to throw a lot of volts at this chip to get it to clock this high. It wont budge over 4.2ghz either no matter the voltage. So Im quite content with 4ghz 24/7 OC. Will get getting a new radiator this weekend hopefully to improve temps greatly.