As you may have guessed by now, the 6600GT is indeed Sparkles midrange performance card. It is almost text book Nvidia reference design. The only differences being: no dual DVI outputs, a custom graphic covering the heatsink and a nice blue PCB. If you look just below the Sparkle graphic, you will see a large silver heatsink. This is cooling the PCI-e to AGP bridge chip I mentioned earlier.



Link: PureOverclock