Nvidia is expected to release its dual-GPU GeForce GTX 590 sometime this month, but you can already have a general idea of what to expect thanks to some leaked information
from an alleged partner presentation. According to the slides, the GTX 590 will have two GF110 cores with all their CUDA Cores enabled (512 per GPU, 1024 in total), will feature 3GB of GDDR5 memory and will be powered through two 8-pin PCIe power connectors. TDP is listed at 365W.
Other details mentioned in the slides include a 12-layer, 2oz copper PCB, a 10-phase GPU power system, and an on-board PCIe bridge chip. As far as cooling is concerned, the card will use a dual-slot solution similar to that of AMD's recently launched Radeon HD 6990, with two vapor chambers and a center fan. The Nvidia card includes a removable cover for easy cleaning and seems to include three DVI ports to enable 3D Vision Surround.
Naturally, the graphics firm has not confirmed the slides as genuine, and there are still some details missing such as frequencies. But with a launch expected imminently, probably on March 22
if the latest rumors are accurate, we won't have to wait long in order to see what Nvidia has up its sleeve.