Minimum vcore possible is good? I7 920 4ghz

Cinebench
http://img638.imageshack.us/f/4ghz1225.jpg/
Look good?

Thank you

Best answer selected by Blckhaze.

i just gotta say you have a lucky chip right there

Really, chips come out differently like that?

Nice OC.  

I just wanted to add that at around 4.0/4.2 the chips require a much larger jump in voltage. 4.2 @ 1.23v would be amazing, but just don't get your hopes up.
Should try and let us know =].

Thanks  

I tried 4.2ghz, had to up the vcore to 1.267 to get stable and then the temps went to 76c and 78c so i brought it back down to 4.0ghz.

what about the tests? did u run prime95 for 8 hours or more? you sure its stable?

at 4.2, only did prime95 for about 20 minutes, didnt like the 78c temps so i shut it off

at 4.0 I did 4 instances of 2gb memtests for over 8 hours, and initially prime95 for 20 minutes, then prime95 for 30 more minutes later on. Then 2 more times last night for 20 and 30 more minutes each after changing some fans around

30 minutes prime isn't really enough to determine stability. Takes about 8 hours. As an example, when OCing my i5 750 I had it error after 3 hours, so I upped the voltage 1 notch (I think it went up 0.00625V) and then it was stable for 4.5hrs, so one more notch up and it passed 10 hours.

I'm curious what your Vtt/IMC is at?

vtt/imc? not sure what that is...

What I have set is
1.225 vcore
1.35 dram bus
1.66 ram
turbo on
speedstep on
bclk 190, the other one 100

Going to turn prime95 on now, and make sure its stable since you mentioned that. thanks

Well when OCing a CPU there's 2 voltages to fiddle with. The first is Vcore and the second is Vtt, although some BIOSes display it as IMC voltage. This is "Integrated Memory Conroller" voltage and is tied in to base clock quite heavily.

http://img31.imageshack.us/f/12244ghz8hours.png/

Temps are a little hotter now... When I was rebooting over and over trying to get to 4.2 the otherday, the Delta 240cfm fan melted my second fan controller, so I just took the thing out and replaced it with a 87cfm coolermaster fan. I used to run the Delta at 48% which was a decent db sound level, and it would blow a little harder than the current one but its not worth it melting all the sockets!

So this is the results at 1.231 even though CPU-Z shows 1.224. The system crashed about 4 hours in like you said it might so i had to notch it up! Thanks for that bit of info

Cooler is just a push pull H50

I looked into bios and none of the voltages I have set are IMC or VTT labeled... everything else is set to auto.

The only things I have set that aren't on auto are mem timings and what is also listed in the post above

Great well sounds like you've got it pretty well all set.