The X2 555BE fared much better than I thought it would:
http://www.tomshardware.com/reviews/...-555,2540.html
4GHZ is not too bad at all for a 45NM AMD chip!!
I am shocked that the Pentium G6950 is so easy to damage. It looks like the voltage needs to be kept at 1.4V and below.
TBH,even at stock speeds for both processors with an HD5850 the framerates do not look too bad at all at 1920X1200. If anything this indicates that spending loads on a CPU is not necessarily the way forward for a single card gaming computer.