Just picked up a "Costa Rica" 3770K and so far at 4.8Ghz on air its only pegging 78C with intel burn test. It seems the first batch of Malasian ivy bridge chips were just terrible and the new batch's are far superior. My first chip was an 8th week chip and this new chip is a 19th week. Needless to say if you were to buy one today it would overclock a lot better then release chips.