HotHardware.com posted an article where they explore the performance of NVIDIA's GeForce 8800 GTX and GeForce 8800 GTS cards running in dual-card SLI configurations.

NVIDIA has released a couple of fresh sets of Forceware drivers for the GeForce 8800 series, so we thought it was a good time to revisit the GTX and GTS to see how a pair of each type of card performed in a dual-GPU SLI configuration. So, armed with dual GeForce 8800 GTX and GeForce 8800 GTS cards, and a top-of-the-line testbed, we set out to do just that.

GeForce 8800 GTX and 8800 GTS Performance Review