It doesn't suck for gaming, it requires more gpu processing speed and mem. But it configures itself to your system and the features that require this extra speed can be turned off. I will get it(im a bit of a computer geek) but ima pirate it, fuck paying.
It also isn;t anywhere near an exact copy of what is on OSX. M$ is offering the ability to use vista on macs by the way(a genius move).