Core i7 Overclocking by Batch #

[drnick]

Given that the memory controller is on the i7 chips, are we comparing apples and oranges when we talk about vcore requirements without using similar memory parameters (amount of ram, speed, and timings)? Or is it only the cpu vtt value and not the vcore that should differ with different memory configurations? I have come across a post or two suggesting vcore requirements can be decreased by downclocking ram.

Just wondering, as I have two supposedly "good" batch number 920's, one requiring 1.418vcore and the other 1.4625vcore to run stable at 4.0GHz with HT on and turbo off. I run both with 6 gigs of ram at 1600mhz with 8-8-8-21 timings. Just curious what ram configuration folks who run 4GHz stable at 1.3ish vcore are using.

(I realize chips can vary considerably even within the same batch number- just curious if memory might explain some of the differences in vcore requirements. Or maybe I'm just envious of the folks with better chips).