Comparison of GIGABYTE Radeon RX 6800 Gaming 16G video card vs ZOTAC GeForce GTX 980 Ti AMP! Extreme video card by specifications and benchmarks. GIGABYTE Radeon RX 6800 Gaming 16G runs at 1.775 GHz+ 4 % base clock speed and has 16 GB of GDDR6 memory, while video card ZOTAC GeForce GTX 980 Ti AMP! Extreme runs at 1.253 GHz+ 25 % base clock speed and has 6 GB of GDDR5 memory. The TDP of the first video card is 250 W, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.