Hmmm my 6000+ @3.5ghz runs fine with a 500watt Antec and TA770. But once i installed the Phenom9950 (140watt) @3.2ghz and 8800GTS(G92)512mb..It would shut the system down..

I replaced it with a 650watt ThermatLake Modular which enable dme to Get 3.5ghz on SB600 and now this same PSU which runs My SIG.