hands-on with NVIDIA's first Kepler GPU, but all those fancy features count for nuthin' if the benchmarks don't back them up. So do they? Huh? Do they? NVIDIA told us to expect a 10 to 40 percent performance boost from the $499 GTX 680, versus AMD's pricier Radeon HD 7970, and it appears that was no exaggeration. If you've bought yourself a high-end 28nm AMD card recently, try to hold back those tears until you've glanced over the reviews after the break. Let's just hope for a fairer fight when NVIDIA's mainstream and low-end cards come out to tackle AMD's 7800- and 7700-series -- and hey, some timely price drops could help to balance things too.