In case of upcoming high-memory configurations nVidia Tesla, Quadro and GeForce cards, the company had to install a 6-pin and an 8-pin connector, getting 300W of power to play with. However, this was a precautionary measure. According to information we have at hand, the GT300 board [yeah, featuring "Fermi" CUDA architecture] barely missed 225W cut-off for the 6+6 pin if the board comes with 6GB of GDDR5 memory.
nVidia could have gotten 6+6-pin configuration and still ship 6GB version, but the margin of efficiency would be just too low [even with digital PWM, boards cannot be 100% power efficient] to qualify inside OEM systems. The decision was thus made and the 6GB cards come with 300W of available power.
NVIDIA GT300 power consumption just over 225W
Posted on Thursday, Oct 01 2009 @ 21:59 CEST by Thomas De Maesschalck