Available since the end of last year (the AGP version was first released and the PCI Express followed several months later), sales of the GeForce 6600 GT have exploded. If you are interested in buying a GeForce 6600 GT, you might first want to take a look at the survey of eleven 6600 GT graphic cards, 4 of them AGP and 7 PCI Express by Behardware.com.