Quote Originally Posted by saaya View Post
So, i7 launched and we are all sufficiently scared of using more than 1.65v vdimm alright. Looking at the real world performance boost from running high mem clocks over easily achievable clocks with 1.65v vdimm or even less, it seems high clocks and hence high vdimm isnt needed for gaming and 24/7 at all...
but THIS IS SPA... XtremeSystems!
I know there are quite some people out there pushing for more, a lot more

Please share your results here and i will do my best to update the first post and summarize the experiences. Did you kill an i7 with high vdimm? What vtt and vcore did you use? for how long? Are you running high vdimm without any problems? how high? whats your vtt? whats your vcore?

Thanks!

1.90v vdimm / 1.1 vtt = dead after 10 hours (Engineering Sample CPU rev B) - rev B?
2.25v vdimm / 1.45v = dead after 10 hours (Engineering Sample CPU rev C) - buggy board?

1.65v vdimm / 1.20 vtt = ok forever according to intel
1.80v vdimm / 1.30 vtt = ok for 5 weeks
1.95v vdimm / 1.40 vtt = ok for 3 weeks
2.05v vdimm / 1.45 vtt = ok for 3 weeks
2.05v vdimm / 1.36 vtt = ok for 4 weeks
2.30v vdimm / 1.35 vtt = ok for 2 week (cold)

That sound very "strange" to me, the catastrophics diode protections are stopping any heat crazy stuff, and I never saw in our lab a test of transistor dieing so fast ... you are doing something very wrong. Did you modify your board or something like this? With enough cooling, I never saw the life so short.

Do you still have the processor that you claimed are dead? I am interested in getting them for analysis, since we never saw that kind of extreme death.

Francois