OCIA.net has posted their latest article entitled: nVidia Hybrid SLI Technology

The idea behind combining multiple graphics processors to increase performance is nothing new. While you might be familiar with recent SLI and Crossfire solutions from modern-day video card manufacturers nVidia and AMD/ATI, the birth of multi-GPU 3D gaming can be traced back more than ten years ago to a company called 3dfx and their Voodoo2 graphics chipset. Today we find nVidia and AMD/ATI competing on a new graphics front, combining a hybrid mix of integrated motherboard graphics chipset commonly found in low-cost mainstream computer systems with that of a more traditional separate discrete graphics card.

nVidia Hybrid SLI Technology Article