I've murdered many systems and I keep a fire extinguisher right nest to my desk... no foolin! I overclock and do extreme benchmarking using phase change units that I build. Phase change freezes the cpu and north bridge and video processor. Bringing a cpu down to -100C + does have it problems... condensation is a killer and I've had 2 boards go up in flames (see fire extinguisher). In the past year I've killed a Q6600, 2 E8600's and a Q9550 along with 3 of the motherboards they were on. Right now I have a C1 stepping Q9550 to 4.2ghz on a p35 board..... nice a stable.... for now.