I'm running a pc I built this summer with a Gigabyte 890GPA-UD3H motherboard, an AMD Phenom II X4 945 processor, 12Gb Corsair XM3 DDR3 memory, and an Diamond HD Radeon 5870 1Gb Graphics card. Do you have any advice if I decide to overclock my CPU? (Specific programs, speeds, or coolers required or needed)