It leaked a few days ago but now it's pretty much official. It's two GTX-200 GPUs on a single card and meant to compete with ATI 4870x2. Looks like it does a good job of that, too.
It has 1,796MB of RAM.
http://hothardware.com/News/NVIDIA-GeFo ... -Unveiled/
Fabrication Process 55 nm
Core Clock (texture axd ROP units) 576 MHz
Shader Clock (Stream Processors) 1242 MHz
Memory Clock (Clock rate / Data rate) 1000 MHz / 2000 MHz
Total Video Memory 1792 MB
Memory Interface 448-bit per GPU
Total Memory Bandwidth 224 GB/s
Processor Cores 480
ROP Units 28
Texture Filtering Units 160
Texture Filtering Rate 92.2 GigaTexels/sec
Connectors 2 x Dual-Link DVI-I 1 x HDMI
RAMDACs 400 MHz
Bus Technology PCI Express 2.0
Form Factor Dual Slot
Power Connectors 1 x 6-pin 1 x 8-pin
Max Board Power (TDP) 289 watts