So sitting very comfortably and coolly at 3.8GHz with my 1090T. Goes to 3.6 with stock 1.325v but requires a large increase to 1.4v to be able to run 3.8 stable. At 1.4v the temps are largely unaffected. To get any higher requires in the neighborhood of 1.45 to 1.475, which is still well within safe for temps, but poking the edge of my tolerances. NB OC'd to 2400MHz with 1.2v, HTT left stock. Overall is noticeably faster than my 955 at the same speed. Sometimes due to the better architecture and memory controller, sometimes due to the extra core. What I know for sure is that it's unlocked a new tier of performance for my 6850s. They seem slightly more adequate recently. Was the 955 really that much of a bottleneck? Games like Crysis 2 and Battlefield 3 have transformed. I can't suddenly turn on AA or anything as the memory limit still applies, but performance has nonetheless increased significantly. Enough to make the difference between playable and unplayable in Crysis 2. I've clocked almost a 30% improvement in areas. That's not all due to extra cores.