NVIDIA SUCKS MAN, THEY SUCK BAD, 23% difference from driver cheats. 5900 Ultra's score droped from 5700 to 4700 in a new cheatproof version of 3dmark (that is readon 9700 level scores!!)
It looks like ATI could be cheating as well though. Read:
EDIT: funny how nivia said 3d mark is usuless for testing graphics performance because of bla bla bla when GF FX 5800 was out, they even droped out of the beta program and wrote articals against fruture mark just because their products are inferior in it compared to the readon. They must have realized that gamers do look at the benchmark and as a result they cheated!