Windows 7 is what my last overclock was on, just didn't change it. Its not on raid, I have a 500gb and a 250gb in the system, windows 7 is on the 250gb. Only problem I've had is that it only sees my 250gb. I haven't tried using AOD yet to see if I can get it working. All the regular benchmarks work fine for me. Right now my problem is that the temp sensor for the socket is frozen at -17 so I really have no clue how temps are doing.