NVIDIA prepping GeForce GTX 580 to counter AMD's HD6970
 

Enter, the GF110, NVIDIA's new high-end GPU under design, on which is based the GeForce GTX 580.

The new GPU is speculated to have 512 CUDA cores, 128 TMUs, and a 512-bit wide GDDR5 memory interface holding 2 GB of memory, with a TDP of close to that of the GeForce GTX 480. In the immediate future, there are prospects of a more realistic-sounding GF100b, which is basically GF100 with all its 512 CUDA cores enabled, while retaining its 384-bit GDDR5 memory interface, 64 TMUs, and slightly higher TDP than that of the GTX 480.

http://www.techpowerup.com/132832/NV...e-GTX-580.html