Comparison of PowerColor Fighter Radeon RX 6600 XT video card vs MSI GeForce GTX 1660 TI GAMING X 6G video card by specifications and benchmarks. PowerColor Fighter Radeon RX 6600 XT runs at 1.968 GHz base clock speed and has 8 GB of GDDR6 memory, while video card MSI GeForce GTX 1660 TI GAMING X 6G runs at 1.500 GHz base clock speed and has 6 GB of GDDR6 memory. The TDP of the first video card is 160 W, and the second is 130 W+ 8 %. Compare the table of benchmark results to find out which graphic card is better.