The GeForce 7800 GTX is a considerable performance advance over its predecessor, the 6800 Ultra. It's markedly faster in terms of pixel shader power, texel fill rate, and vertex throughput. The 7800 GTX is easily the fastest graphics card on the market now, dethroning the Radeon X850 XT Platinum Edition. More importantly, the GeForce 7800 GTX makes high-dynamic-range rendering run at acceptable speeds in games like Far Cry and Splinter Cell: Chaos Theory, so the performance gains bring tangible benefits by making tasty new forms of eye candy possible in real time. And if you pair up a couple of 7800 GTXs in SLI, you can get nearly twice the peak rendering power. Some of those benchmark scores are still making my head spin.