Southern Island’s graphics cards have dominated the news cycles since their release early this year, but according to VR-Zone, Kepler is fast approaching and the architecture looks promising.
According to the site, the rumored specifications list the GTX 680 as having 1536 CUDA cores, which is three times more than the GTX 580. Like the previous generation, the GTX 680 utilizes "hotclocks" and the GPU clock speed is set at 705 MHz, meaning the shaders will operate at 1411 MHz. Additionally, the rumored specifications show the card to have a 2GB of GDDR5 memory clocked at 6000MHz and running on a 256-bit memory interface. With this sub-system the GTX 680 should have a total memory bandwidth rating of 192GB/s.
Currently this is all speculation, but we will keep you informed on any information relating to Kepler just as soon as we have it.