Something we really like about the GeForce GTX 500 series is its improved efficiency, and efficiency is something that plagued the high-end graphics cards of the GTX 400 series. When testing with Crysis we found that the GeForce GTX 570 used less power than the GTX 470, while it consumed 8% less than the GTX 480 and provided 5% more performance, now that is efficiency.



Link: Legion Hardware