It's true, although, NVidia really does keep on top of the updates, 99% of all new games get drivers within a week.

SLi splits the screen horizontally and assigns one half to one card, and the other half to the other card. This is of course driver driven, but Crossfire is hardware rendered. The windows based Video card drivers do the job for Crossfire.

Crossfire can split the screen horizontally, or vertically, but for performance it uses supertiles which basically turns the rendered screen into a Checker board, with one video card rendering the "black" checkers and one screen rendering the "white" checkers. This allows super sampling (basically allows you to run 14x AA whereas most cards can only support 6X) and overall higher

Crossfire gets you closer to the "Double the framerate" goal, because it seems to be more efficient. But a master card is required (unlike SLi), and although costs are not much higher than SLi, they still need to come down a bit. I think crossfire is a superior technology don't get me wrong, but if you're looking for bang for your buck, You can't really beat two 6800GS's in SLi.

__________________