I've had my PC for almost two months now. Decided to OC it recently. Gelid Tranquilo, i7 920 D0, Gigabyte X58UD3R Rev2 with the new Bios and a Xigmatek Utgard with stock fans. Although while the CPU ran at stock speed the machine was already more than capable to grind through all my normal usage scenarios effortlessly, I decided I just want to try OCing just to tinker with the hardware. That and with Sandy Bridge as the next gen Intel platform this might be the last chance to OC easily and get huge return for a modest cost. Anyway, as this was my first PC build, I made some mistakes. The biggest one was aplying waaaaaay too much TIM on the CPU. I pretty much used the whole tube that came with the Gelid cooler. The guide I was using said "use a small amount" and well... that tube sure seemed very small to me. Next time I should remember that "small amount" is not exactly an SI unit, will stick to grams and mililitres.... With the hardware listed above a 4Ghz stable OC should be pretty much guaranteed with the right BIOS settings. Under Prime one of the cores reaches 99-100 degrees and others hover around 95. When I take it down to 3.8 the max temp under prime is 94-95 for the hottest core and 88-90 for the other ones. Using Core Temp. I'm pretty sure my BIOS settings are ok, but I will repost them later after I get home just to double check. I'm pretty sure the massive amount of thermal paste acts as a insulator rather than conductor... I have no idea what to use to remove the excess amount. Also, IRL usage temps are generaly much, much lower since the most taxing CPU task for my machine is gaming, so only 1-2 cores are doing some minor excercise while the GPU is sweating. My point is that practicaly the temps are well within safe, but it just bugs me a bit when I know I screwed something up.