Comparison of PowerColor Fighter Radeon RX 6600 video card vs MSI GeForce RTX 2080 Ti Lightning Z video card by specifications and benchmarks. PowerColor Fighter Radeon RX 6600 runs at 1.626 GHz base clock speed and has 8 GB of GDDR6 memory, while video card MSI GeForce RTX 2080 Ti Lightning Z runs at 1.350 GHz base clock speed and has 11 GB of GDDR6 memory. The TDP of the first video card is 132 W, and the second is 350 W+ 40 %. Compare the table of benchmark results to find out which graphic card is better.