The EVGA SuperNova NEX1500W Classified is a beast. It's clearly aimed at overclockers that need as much power as possible for their high-end components. That is why EVGA focused on power and stability, and sacrificed a little in the area of noise production. Strong qualities of this PSU are its voltages, ripple, efficiency, extra software and its looks. Drawbacks consist of the noise and also the usage without load.
Slow computer got you down? Maybe a hardware upgrade should be in your cards, if so this guide to the Fundamentals of Upgrading a PC is an invaluable read. PCSTATS Tips