NVIDIA "G8x" Design Kit Analysis

One of the bigger surprises of the G8x family is the support for more than 4 GPUs, at least in the design. It seems pointless to put a low or mid range GPU into SLI mode when a high-end card can usually produce better performance at lower cost. However, the G8x family design kit touts an interface for "more than 4 GPUs." Given the unified shader architecture of the GeForce 8000 family, it would be pretty safe to say this additional functionality is probably reserved for some sort of physics project.