NVIDIA's 2012 Kepler-based GPU lineup may have been revealed ahead of an official announcement. A list of alleged specs posted by EXPreview suggest the card range will be built from three different GPUs, including the GK110 produced from a 550mm² die. The flagship GTX690 is said to integrate two GK110 chips, for a total of 3.5GB of memory, with a 1.5GHz shader clock and a 4.5GHz memory clock....