NVIDIA has announced that it has licenced SLI multi-graphics card technology to motherboard manufacturers making AMD boards.
Starting with 990FX, 990X and 970 chipsets, you'll be able to pick up SLI-compatible motherboards from ASUS, Gigabyte, ASRock, and MSI.
What's behind this? Easy, dominance. According to distribution service Steam, 93% of all multi-GPU systems in use today use SLI - all of them will Intel based systems. But AMD is starting to make a comeback in terms of gaming (partly because its CPUs are a heck of a lot cheaper and offer better value than Intel's offerings), so NVIDIA wants to make sure that it's not cutting itself out of this market.
There's no details of this licensing agreement, but it's a good move for NVIDIA, a good move for AMD (its CPU division at any rate, not so good for its GPU division), and a very good move for enthusiasts.