Still, an overclock of 2.8 GHz with just a simple little heatsink and high-speed fan is pretty decent for the AMD Athlon64 3700+ processor which run by default at 2.2GHz. I think you'll be surprised to see just how that 600MHz speed-boost translates when looking through the benchmark results... But first we try overclocking the CPU with the aide of an ECT Prometeia Mach II phase-change cooler!