I have HP a6683w desktop, removed Vista, has XP, added BFG Tech GS-550 550W ATX12V V2.2 / EPS12V V2.8 SLI Ready CrossFire Ready Power Supply, GeForce 9500 GT 1GB; Mboard= stock Micro-ATX- 24.4 cm x 24.4 cm AM2. I looked at ALL Mboards w/same specs (AM3+) at Newegg and TigerD. Cannot exactly match (mostly I/O port config). Is it too risky for problems? Is only safe way to upgrade is to use supported CPU with stock Mboard, then video card and RAM?