Asian site Chiphell is now hosting a couple of photo's showing a graphics card what seems to be the Geforce GTX 680.
Based on the looks of it the card is a dual-slot design, has a black PCB, two stacked 6-pin PCIe power plugs, a couple of SLI connectors, and four display outputs - dual DVI, HDMI and DisplayPort.
The GTX 680 is equipped with one GK104 28 nm GPU has a 256-bit memory interface, 2 GB of GDDR5 graphicss memory.