The Inquirer heard the NVIDIA Quad SLI 7900 GX2 graphics cards will be clocked at 500MHz. They will feature four G71M, yes notebooks GPUs, because otherwise it would require too much power.
The good news is that the cards work in combinations of four, each at 500MHz and you can bet that Quad SLI would get even better performance if Nvidia could clock the cards to 650MHz each. At this time it is out of range.
We saw some initial scores and we can tell that at least in infamous 3Dmark06 four cards performs roughly twenty percent faster than the two cards in SLI, that much right?
Nvidia wants all Quad SLI gamers to play at 2560x1600 resolutions, with all features on of course, but somehow we know that Nvidia won't be able to enable its users to use FSAA and HDR together as this simply doesn’t work on G7x chips.