Can a superior graphics card make up for a inferior cpu?

When i look at benchmarks for video games, i see that the most change in framerate occurs when u add a more powerful graphics card. So im wondering, would a gtx ultra and pentium 4 or d processor be good enough for gaming at least 30 fps at ultra high res, even with a game like crysis. Not that im going, lol, its simply stupid to get a ultra and not put in money for a core 2. But im waiting for the 8 core processors to come out and ddr3 ram before making any purchases.Can a superior graphics card make up for a inferior cpu?
Just changing one bottleneck for another but in games usually the 3d is the bigger bottleneck.





I have a situation where I have an underpowered CPU and more powerful video card, in my case an Athlon 1600 paired with a GeForce 7600.





When I was playing the game 'railroads' the video card had no trouble with the graphics even at the highest resolution and at the start of the game with only a few trains no problem. At the end of the game when there are 80 trains running everything dropped to a crawl because of the CPU, graphics were still great, but gameplay bogged down because the mouse slowed, response time slowed, etc because CPU was overworked.Can a superior graphics card make up for a inferior cpu?
it will help but the cpu will become a bottleneck and slow things down. i wouldn't count on being able to use the high settings at higher resolutions.