Comparison of GIGABYTE Radeon RX 6900 XT Gaming OC 16G video card vs ZOTAC Gaming GeForce RTX 2080 SUPER Twin Fan 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 ZOTAC Gaming GeForce RTX 2080 SUPER Twin Fan runs at 1.650 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 250 W. Compare the table of benchmark results to find out which graphic card is better.