So my 2500k has been sitting under a stock heatsink at stock frequencies for a while now. I'm itching to have a go overclocking it (and am getting sick of the noise) but before I go and pick out a cooler for it I wanted to ask what your opinions were on using my old Thermalright Ultra Extreme on it. The TRUE currently still resides on my q6600 (which is doing a marvelous job as my new server). So, my options are either: 1. Move the TRUE onto the 2500k, having to buy a mounting kit for it and getting a new cooler for the Q6600 (its own stock cooler has long since gone). or 2. Just buy a brand new cooler for the 2500k, and if so, which one? The Hyper 212 seems pretty good performance for the money, but the Dark Rock Advanced seems awesome. I'm thinking also about taking the plunge (I can't be the first to use this pun) into a closed loop water cooler. How safe are they with regards to leaking? Would, say, an H60 be worth it over the Dark Rock Advanced? I'd be looking at getting 4.5ghz out of the 2500k, but I also want it to be quiet while at that speed.