Comparison of GIGABYTE AORUS Radeon RX 6800 XT Master Type C 16G video card vs Sapphire Radeon RX 6600 video card by specifications and benchmarks. GIGABYTE AORUS Radeon RX 6800 XT Master Type C 16G runs at 1.825 GHz base clock speed and has 16 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 300 W, and the second is 132 W. Compare the table of benchmark results to find out which graphic card is better.