ATI - DAAMIT however you want to call AMD's graphic division managed to serve up a WHQL driver before the Vista launch. DAAMIT driver is up and is WHQL. DAAMIT told us it could do it and it did. Unfortunately Nvidia didn't.
Nvidia has produced a beta driver and we wrote about it here but some readers reported that the SLI doesn't work under 64-bit Vista. It should, as Nvidia say its there and it works. But it seems that Nvidia really rushed this driver. Then you also have the problem of the lack the performance of the two cards with the driver, as the games render with single card only.
Nvidia has dropped all other software developments in order to make the WHQL Vista driver as soon as possible. You can expect the driver very soon but no one can say when exactly. Since you could argue that the firm had five years to finish the job, can you really say that they didn't have enough time and that this is not a big deal? µ