Corsair TX CMPSU-750TX 750W Power Supply
Corsair makes a LOT of different power supplies, and many of them compete more or less directly with each other (not to mention the various other manufacturers who are using virtually the same guts). Without delving into the difference between "Enthusiast", "Professional" and "Gaming" product lines, I'll simply say that the 750TX hits the perfect spot between enthusiast power and mainstream price. The 80 PLUS Bronze Certification is a solid guarantee of efficiency and the dedicated single +12V rail is perfect for those who consider it to be an important feature. There are four 6+2 PCIe connectors (SLI certified), and the 140mm fan is both effective and quiet. You get nice long non-modular cables, and a nice long Corsair warranty. I personally swear by Corsair, and while there are plenty of PSUs with more exciting features, I have no hesitation in recommending the 750TX for any high-mainstream or mid-wattage enthusiast PCs.