Hi,
I did some first LN2 testing at home with Core i7-965, Asus Rampage 2 Extreme (retail) and 2 x Asus EAH4870 X2 TOP:
Some insulation around LGA1366 socket. Used two OCZ and one G.Skill DDR3-1600 module.
Scaling of this Q1CK Engineering Sample CPU seems to be very bad. I could run easily 4,4 GHz with 1,45V and -20C but 4,5 GHz needed 1,55V and -50C.. after that I hit a wall. CPU-tests crashed almost immediately.. 4,6 GHz was no go. Multipliers 34x and 35x didn't seem to work very well, lower temperature didn't help, more voltage didn't help. I got stuck.
http://service.futuremark.com/compare?3dmv=520138
I was able to score P27491 in Performance-preset.
P18530 with single card (850/990 MHz).
I'll continue testing so more coming soon
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