Core i7/X58 Overclocking Thread

[dejanh]

Looks fantastic dej. Is this a new chip, and how does it scale vcore/qpi wise up to 4.2ghz?

Well, the scaling seems almost linear past 3.8GHz, at least for the next two multipliers (20x and 21x). I need about 0.1V - 0.12V on the core per every extra 200MHz (+1x multi.) using the same settings as above for the rest of the system (i.e., HT on, same DRAM settings). I can almost guarantee that it is my cooling having an effect on it as well. I know from the previous two i7 940s I tested that if cooled better lower voltages are possible. The difference is not huge, but still, it is maybe 1.38V for 4.2GHz if cooled better vs. 1.4V. A difference nevertheless. At the moment though it is how I said in the beginning...about 0.1V per additional 200MHz. No other voltages, including QPI change at all.

Oh and yes, this is my new i7 940.