BTW, theres a fourth player in this game, whom people often forget. The first third are IHV, benchmark vendor, and the reviewer. Ok who's the fourth guy ? Obviously, SicroMoft who signs the drivers and puts a stamp of "Quality hardware" on it.
Obviously WHQL testing doesnt even look at issues brought up here. They just barely touch on basic DX6-DX7 functionality. And it would be near impossible for them to do something to detect any 3rd-party specific funny stuff in drivers.
But they have their stamp of approval on it, does it mean they approve Nvidias funny stuff ? Would be interesting to hear from MS on this issue.
( BTW, im very aware of the fact that microsoft does scant little functional testing on drivers they sign .. im a developer of one that gets periodically signed and oh boy what a crap has passed through there ..
)
EDIT: an afterthought. Maybe they could include a timedemo of their own published games in DX driver testing and compare the output to their own refrast.
They could be making it available to public as well .. but of course, MS being the evil giant they are, nobody would trust it for benchmarking anyways.