Hey irenic, seems you've tested your P35 gigabytes quite well. I'm currently using a P35-DQ6 rev1.x with F3 bios. But just an e6420 and stock cooler la. At the moment when you do stock cooler testing, what kind of temp do you get on max load?

I'm just aiming for 3.2 since I'm using stock cooler. Which voltage do you increase when orthos fails? And is my load (orthos) temp at 65-66C ok? Btw C2D noob here, and I'm impressed with this board too. Overclocking is effortless. Any probs installing the GeminII? Thinking of getting either GeminII or Ultra-120 Extreme, but the price difference is huge though. I'm not a pro in terms of installation, so which of these two fans is easier to install , and any big performance difference between the two (since I assume you've tested them both).

My rig at the moment.

P35-DQ6 rev1.x (F3)
E6420 at 3.2Ghz (400x8) with stock hsf
Crucial Ballistix Tracer PC6400 at 400Mhz 4-4-4-12
Centurion 5 Standard with 80cm front and 120cm rear.
Ambient 21C Idle at 34C Max load at 66C

Stats:
MCH: +0.15
FSB: +0.1
vDimm: 2.15
vCore: 1.368

Oh, and one last thing. You think I could go further with the stock heatsink or am I dancing with danger?

Thanks for the great tips Currently I won't be overclocking it much further, and I finally kept it running stable with orthos for 6 hours. Just needed to bump the vcore up to 1.375. So, do you recommend the extreme120? I might be going quad later too.