hi, i have a i5-2550k at 3.4ghz. i use a h80 corsair to cool. and my motherboard is a MSI z77a-g45. the first time i overclocked this chip it was on a sabertooth z77. and at 4.0ghz burn test it failed to be unstable with temperatures reaching 90 c. so i went to canada computers for some advice. i decided to buy better thermo paste. and when i mounted the i5-2550k i made sure that the block was "firmly" tightened against the chip. the paste takes 2-3 weeks to idel. and i set it again at 4.0ghz. and this time the i5-2550k is idle at 25-30 c. and under stress it goes to about 35-40c. and the burn test is a success. my question is, not only a question but advice and feedback. i guess its extremely important to have good thermo paste, and to have your cooling block mounted firmly. so under load it peeks at about 35-40 c the highest. and sits idle at 25-30 c, all cores. i read that 70c is normal, but only from a certain person. so im proud of my temperature unless some feedback says different, please reply and tell me what you think. and on a side note never buy sabertooth motherboards. i had to that went in the past year...