Strange P4 ES, does 4 ghz on air, then does 4.1 ghz max at -47C...

[Kunaak]

I have a very weird 3.0 Prescott ES here.
it did 4.01 ghz on air.

3.8 stable at default.
3.9 on watercooling.

then with phase change-4.1 max completly unstable.
so basically, phase change did nothing more, then air did for this CPU...

thats very weird.
is there anything I am missing about the prescott, or did this CPU seriously maxed out on air?

[morbidj]

I honestly wish I could help you out K, my bad to intrude on your thread but I am just as curious as you. I will spread this around with the few Prescott peeps I know.
BTW, congrats on a killer air cooled chip;)

Out of curiosity what kind of speeds can you get out of your mems?

[althes]

I think its just maxed out completely.

[Kunaak]

I can get about 270 cas 2-2-2-5 outta my ram on a good day.
267 cas 2.5-2-2-5 on other days.

[cold_ice]

I have a 3.2E D0 Stepping, it does about 4ghz with 1,45v with watercooling. With dry ice I was "only" able to get about 4,5ghz. The weird thing was that it oced better with less voltage (the best result was with 1,48v afaik). Whit 1,58v i wasn't able to get 4,2ghz stable...
So these D0 steppings are very weird CPUs in my opion

[charlie]

Kunaak,
Is that the one we'd talked about from my guy? It'll go higher than that! I had a 3.0E ES C1 that went 4609 with the baseplate at -30C. I'm SURE there's something ELSE going on.... is it on P4C800?

C

[charlie]

Actually 4010 at 1.52v is good......
I see, HW doctor = Abit IC7.........
Try to light it up @ 1.65V.......


C