Watercooling
I’ve just installed my Corsair H50-1 watercooler on my Core i5 750 box and its amazing – I’ve idled as low as 14c at stock speeds, I’m now overclocked to 3.2GHz (using this tutorial on Youtube) and am getting ~20c idle and haven’t got above 41c under load yet – that’s running four instances of the mprime torture test.
I also installed the new RHEL6 beta1 under VirtualBox. Its supposed to be based on Fedora 12/13, so is nothing new really, still a big step up from 5u4.