We know that the 9800GX2 has 2 printed circuit boards (PCBs), as did the 7950GX2 in its time, two graphics processing units (GPUs) using 65 nm nodes (most likely G92s with 128 stream processors), 1 GB of memory (512 MB for each GPU) and two DVI outputs.
We don't know yet if the GeForce 9800GX2, which is supposed to be 30% faster than the 8800 Ultra, will support Quad SLI configurations.
The expected price: around $449 US. Expected announcement date: February 14, 2008.