NVidia GeForce 6600 GT

The GeForce 6600 GT sports a core frequency of 500MHz, which is 100MHz faster than the stock core speed of the GeForce 6800 Ultra, and 150MHz faster than the 6800 GT. The 128MB of GDDR3 memory is also running at 500MHz (1,000MHz effective), which is 100MHz behind the stock 6800 Ultra, and identical to the 6800 GT – although it’s worth remembering that both the aforementioned 6800 cards sport 256MB of memory. So, the clock speeds on the 6600 GT are very respectable, but that’s not the be all and end all of performance, and the big compromise made on the 6600 GT is the 128bit memory interface.