Comparison of KFA2 GeForce GTX 1660 Ti EX (1-Click OC) video card vs Sapphire Radeon RX 6600 video card by specifications and benchmarks. KFA2 GeForce GTX 1660 Ti EX (1-Click OC) runs at 1.500 GHz base clock speed and has 6 GB of GDDR6 memory, while video card Sapphire Radeon RX 6600 runs at 1.626 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 120 W, and the second is 132 W. Compare the table of benchmark results to find out which graphic card is better.