We'll peek at the new be quiet! Pure Power 11 600 Watt PSU. The ongoing series keeps getting updated and better. Revision 11 now is 80 Plus Gold certified product series. With the ever-growing popularity of efficient and silent power supplies, this is a modular unit with two 12V rails (for this 600 watt model).
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