Comparison of MSI Radeon RX 6600 XT GAMING X 8G video card vs GIGABYTE Radeon RX 6800 Gaming 16G video card by specifications and benchmarks. MSI Radeon RX 6600 XT GAMING X 8G runs at 1.968 GHz base clock speed and has 8 GB of GDDR6 memory, while video card GIGABYTE Radeon RX 6800 Gaming 16G runs at 1.775 GHz+ 4 % base clock speed and has 16 GB of GDDR6 memory. The TDP of the first video card is 160 W, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.