Guru3D put online a review of the new DualGPU nVidia based 3D graphic card. The 3D1 is built with 256MB DDR3 memory and claims to supports 256-bit memory bandwidth as well. It's actually (2x)128-bit at work here, your standard 6600GT times two, for a performance of about 14.400 3dMarks 2003, but it cost less than a 6800 Ultra GT... You can read the full review here