Hi, I have a Intel C2Duo E6300 @ 1.86GHz, XFX 680i LT SLI Motherboard, Pny XLR8 performance edition GeForce 8800GT 512MB PCI-E 2.0 Video card, Corsair XMS2 DHX 2048MB Dual Channel PC6400 DDR2 800MHz Memory (2 x 1024MB) 600watt SLI ready power supply. What is the best way to OC, Bios or...