Leaked: NVIDIA GTX 680M Info

NVIDIA will be presenting their mobile version of the GTX 680 at Computex 2012 on June 5, called the GTX 680M. While it doesn’t have anywhere near the processing power of the desktop version, at least it’s not a rebrand, like NVIDIA tend to do.

This chip is a highly cut down version of the GK104 Kepler GPU found in the regular GTX 680. Intead of 1536 CUDA cores, it will have just 744 or 768 of them, depending on who you ask. Oddly enough though, the memory amount is purported to be a whopping 4GB of GDDR5. This doesn’t make any sense for a cut down laptop variant though, so we’re taking this with a pinch of salt. It will have a 256-bit memory bus, like its bigger brother and will consume up to 100W of power, which makes dissipating its heat a non-trivial problem, even in a performance oriented laptop chassis.

This chip is based on second revision A2 silicon, with the chip being marked as N13E-GTX 680M-A2. Performance is claimed to be 37% better than the GTX 670M, which is a rebrand of the Fermi architecture and the first leaked benchmark claims it reaches 4905 3D Mark 11 points. The chip will support SLI and DirectX 11.1.