The OCZ 520 Watt PSU is a rock. Once we got the chance to experience the power of the PowerStream Power Supply first hand it?s no wonder why this is the hottest PSU on the market. With our Ultra X-Connect and PowerStream 470 Watt Power Supplies the best overclock we could muster with our 3500+ was 2.4 GHz while running the memory 1:1. With this PSU we managed to push higher to a maximum overclock of 278 x 9 for a max CPU clock of 2.502 GHz. The OCZ 520 Power Supply is THE Power Supply to have. Whether you are looking to overclock or just want a stable source of power, the OCZ 520 Watt PSU will fit the bill.