Specs for the next-generation NVIDIA cards have leaked onto the web, but we advise readers not to place too much faith in these specs until the cards actually ship.On to the specs:“The GTX 280 enables all features of the D10U processor; the GTX 260 version will consist of a significantly cut-down version of the same GPU. The D10U-30 will enable all 240 unified stream processors designed into the processor. NVIDIA documentation claims these second-generation unified shaders perform 50 percent better than the