Comparison of GIGABYTE Radeon RX 6900 XT Gaming OC 16G video card vs GIGABYTE GeForce RTX 2080 Windforce 8G video card by specifications and benchmarks. GIGABYTE Radeon RX 6900 XT Gaming OC 16G runs at 1.875 GHz+ 3 % base clock speed and has 16 GB of GDDR6 memory, while video card GIGABYTE GeForce RTX 2080 Windforce 8G runs at 1.515 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 340 W+ 13 %, and the second is 215 W. Compare the table of benchmark results to find out which graphic card is better.