Core i7/X58 Overclocking Thread

[SteveRo]

A hypothesis is as bclk passes 200Mhz the QPI becomes problematic, the exact cut off depending on the chip, mobo (probably the quality of the buck converter), and maybe temps (just guessing that 90C is less stable than 50C, at least for a few Mhz).

The 965 lets you get past that, but there are SO many 200x21s it seems that is the Q6600 G0 equivalent of 3.6GHz. The question is what is the limit in the 4.4-4.6GHz range? Is it QPI, which means that the 940 may show an edge of the 920? Or is it the CPU itself, which would mean the 920, 940, and 965 are functionally equivalent?

David, based on what I have seen so far (previous post) and comparing to what others have come up with - I think 920, 940 and 965 are all the same (within manufacturing tolerances) with the only exception being the 965 multi unlock.