**Official** Core i7 860/870 overclocking thread

[Hazzan]

any one know about bacth i7 860 L937B434 ?

[Bodar]

This is a screen shot of batch number: l933b553

About to test my second i7 860...
batch number: l932b709

[Bodar]

Just confirmed: Batch number l932b709 is a no go... Same oc profile and setttings.. Could'nt hit 5.0 if you threw a stick at it. cheers!!

[RPGWiZaRD]

Just wondering if you guys seen any worse i7-860 than mine yet:

195x21 HT off (4.1GHz) or 191x21 HT on requires:

Vcore: 1.4375v BIOS / 1.408v CPU-Z
VTT: 1.36v

I'll add the stepping when I come home. It's a rather early stepping.

Even at 196 it won't be stable unless I add a little more juice. At first I thought I needed 1.36v VTT only cuz of 12x ram multi / DDR3-2340 but that didn't turn to be true, it still required 1.36v despite lowering to 8x multi / ~DDR3-1600, ie. for 195 blck it simply needs this VTT. This makes me wanna try if I have more luck using turbo to get 22x multi. Well at least the temps are good in my openbed setup, 69~73C HT off in LinX and 74~76C HT on.

I NEVER get any good cpu samples when ordering new from store, to illustrate on scale I usually receive:

Worst |---X------------AVG-----------------| Best

but when it comes to RAM:

Worst |----------------AVG-------------X---| Best, very annoying!

This has usually made me push the voltages to the limits for a CPU and aircooling to achieve a somewhat satisfying clock speed and I never manage to kill a CPU yet despite running at rather high 24/7 vcore settings like E6750 @ 3.75GHz 1.52v or A64 SD3700+ @ 2.8GHz 1.65~1.67v for example. I so hated that SD3700+, it only clocked to 2.8GHz at this voltage when some other samples around the time I bought mine were able to do 2.9~2.95GHz at 1.5~1.52v. My E8400 was a little better at least, it required "only" 1.36v for 4.0GHz (C0 stepping tho) and Opteron 165 did 2.8GHz at 1.42~1.43v. I really shouldn't buy CPUs new from store it seems with this luck.

[dcl]

RPGWiZaRD, on my P55UD4P I can get the 22x multi (always on) with turbo mode disabled by setting turbo mode to 'auto' and turning all the other power saving stuff off. C1E/C3/C6/C7 states, EIST etc.
Your temps are very good for those volts.

[RPGWiZaRD]

RPGWiZaRD, on my P55UD4P I can get the 22x multi (always on) with turbo mode disabled by setting turbo mode to 'auto' and turning all the other power saving stuff off. C1E/C3/C6/C7 states, EIST etc.
Your temps are very good for those volts.

Thanks for the tip but unfortunately didn't have any good luck with 22x multi either, tried going from 4.1 to 4.15GHz and for that it would require a vcore bump from 1.4375 to 1.45v bios setting to remain stable in LinX (well for a couple of mins at least). So gonna stick to 195x21 but it seems VTT: 1.34v instead of 1.36v is actually possible to use, didn't seem to be when I first tried, could have been the bios version tho dunno cuz I remember getting bsods when running LinX previously at this clock speed with 1.34v. At least efficiency is great but I wish the CPU didn't have to start maxing out exactly at this clock speed but a couple of 10MHz higher so I could have run 198x21 (4.16GHz) & DDR3-2376 or 199x21 (4.18GHz) & DDR3-2388 and have superb performance efficiency as that's whereabouts these ram sticks maxes out at 1.68v vdimm bios setting. Oh well have to keep an eye for some good cpu offers or wait for Clarksdale possibly.

[IntelH2O]

Hehe im from Greenland..

[OC Nub]

Got a new 1156 cpu today, bios shows vcore at 1.139v at default settings all power savings options disabled. Everest and cpuz read the vcore at 1.141v, there is no vid information in RealTemp or core temp so IDk will just have to go on what bios reads. Will start testing now and post some results soon I hope.

[PolRoger]

Got a new 1156 cpu today, bios shows vcore at 1.139v at default settings all power savings options disabled. Everest and cpuz read the vcore at 1.141v, there is no vid information in RealTemp or core temp so IDk will just have to go on what bios reads. Will start testing now and post some results soon I hope.

Seems promising might be 1.20 vid or maybe 1.225 vid. Hopefully it will be a good clocker. I wish Intel didn't move the temp registers on these chips... I don't like doing guesstimates.

[OC Nub]

First test was a quick LinX run, only 5 passes. Going about this all wrong I know but I will go back and starting at stock vcore test again once I am done playing. Anyway I set 1.225vcore in bios which was my default vcore on the 860 and booted at 3851mhz and was able to pass a very short linx run. Temps are warmer than I expected so that may end up being an issue at higher speeds. I know I could have got a 920do/x58 that would be faster but I am having fun on this platform.

[OC Nub]

More testing, took a big bump in vcore for the next 250mhz. I'm sure its not truly stable but just doing short runs with only 5 passes for tonight.

[OC Nub]

4200mhz 5 passes, load vcore was 1.341v

[zsamz_]

nice goin OC Nub you got a good 860 like mine
but i like my D0 more i'm doin 4.5 @ 1.4v on air with 6 stix
i'm lazy i only passed linx 20 pases 2 times

[OC Nub]

zsamz: Actually I got the 870 chip, I went looking for 920 do's with a long list of batch#'s in my pocket and out of 30 or 40 cpu's I could not find one with a known good batch. Also the board selection wasn't very large, had 3 boards to choose from, the p6t, the ud3 and the evga sli le. I had wanted the ud7 or a higher end evga board. Decided to stick with this evga p55 and try this chip even though it may not have done better than my 860. Stupid maybe but I am having fun with it, I know the x58 is faster but this is doing pretty good for me.

[zsamz_]

zsamz: Actually I got the 870 chip, I went looking for 920 do's with a long list of batch#'s in my pocket and out of 30 or 40 cpu's I could not find one with a known good batch. Also the board selection wasn't very large, had 3 boards to choose from, the p6t, the ud3 and the evga sli le. I had wanted the ud7 or a higher end evga board. Decided to stick with this evga p55 and try this chip even though it may not have done better than my 860. Stupid maybe but I am having fun with it, I know the x58 is faster but this is doing pretty good for me.

damn i didnt see it bein an 870
for 24/7 rig it dont really matter
i got my 860+ftw in a box
i got a nice low vid q9650 n my gigabut board died gonna be till next year till i get it back
i think the 860 might come outa da box soon

[OC Nub]

damn i didnt see it bein an 870
for 24/7 rig it dont really matter
i got my 860+ftw in a box
i got a nice low vid q9650 n my gigabut board died gonna be till next year till i get it back
i think the 860 might come outa da box soon

I almost didn't post any results with this chip because I figured I may have to hear how stupid I was for getting it and not going x58, but I do like the rig now especially after getting a better set ram for it.

quick LinX run at 4300mhz.

[dcl]

zsamz, how did your UD4P die?

[zsamz_]

zsamz, how did your UD4P die?

it died while i was running only 2 cores
i doubt i was stressin it lol i waasnt even primin just runnin everest tests

[PolRoger]

I almost didn't post any results with this chip because I figured I may have to hear how stupid I was for getting it and not going x58, but I do like the rig now especially after getting a better set ram for it.

quick LinX run at 4300mhz.

Seems like its a pretty decent chip... look forward to seeing more.

[RPGWiZaRD]

OC Nub, damn I wish I had ur luck, my i7-860 need more vcore for 4.1GHz HT off (~1.4v) than you need for 4.3GHz HT: on. Mine did 3507 MHz on stock voltage 1.225v bios setting (~1.18~1.2v cpu-z). What was your i7-860 like?

[zsamz_]

I almost didn't post any results with this chip because I figured I may have to hear how stupid I was for getting it and not going x58, but I do like the rig now especially after getting a better set ram for it.

i'm not sayin a word you know my thoughts on your blunder

[OC Nub]

Seems like its a pretty decent chip... look forward to seeing more.

I'm happy with it so far, I will do some more testing as soon as i have time.

OC Nub, damn I wish I had ur luck, my i7-860 need more vcore for 4.1GHz HT off (~1.4v) than you need for 4.3GHz HT: on. Mine did 3507 MHz on stock voltage 1.225v bios setting (~1.18~1.2v cpu-z). What was your i7-860 like?

My 860 needed about the same vcore for 4.0ghz as this needs for 4.3ghz with HT on, it also needed a lot more vtt.

[OC Nub]

i'm not sayin a word you know my thoughts on your blunder

[OC Nub]

Trying some spi 1m to get under 9s., had a better run at 4900mhz but the pc froze up when I opened snipping tool. Will work on that some more when I get time. I have no idea what a good run is for 1m on an 1156 chip but this is my personal best so far.

[OC Nub]

Testing blend tonight. It needed a small bump in vcore from the short linx run I did last night, failed blend at 1.29vcore after about 20 minutes or so. I tested this ram using the same timings at higher speeds with my 860 so I am pretty sure it was just lack of vcore that caused it to fail. Will let this go overnight to see if it is stable enough to move on.