Something from the 3dfx Voodoo era is coming back it seems, namely SLI (Scan Line Interleave), the ability to connect 2 of these cards. NVIDIA today relaunched this concept with their GeForce 6800 series.
If you thought a GeForce 6800 Ultra is fast, how about two of them runnning in tandem? Nvidia today released detailed information about their GeForce 6800 series SLI implementation, the new king of 3D graphics is here.
Early driver revisions show that these SLI configurations perform 77% faster than one single card. NVIDIA told that this would increase to about 90% faster than a single card.
But there are some draw backs, you'll need a workstation motherboard for instance, which has two PCI-E-x16 slots. You will also need the more expensive Intel Xeon CPU and two identical, same brand and type, PCI-E GeForce 6800 graphics cards..