I got lucky that I did not sell SB yet, and only had to purchases 10 3930k to find this one
on RunMC single stage -45c it is too cold, chip does not like -30c or more to run actual benchmarks.
-45c single stage passes physics x54 at 1.55v and fails x55 up to 1.61v
-28c ln2 passes physics x56 1.575v no problem
I have to admit, x79a-GD65 is a pretty nice and easy to bench board. Not too many settings which is not always bad if you dont know what they do lol. I think the poor south american benchers have alot of humidity, I bench in room at 55F and AC blasting bone dry.