Comparison of Gainward GeForce RTX 2080 SUPER Phoenix video card vs ZOTAC GeForce GTX 980 Ti AMP! Extreme video card by specifications and benchmarks. Gainward GeForce RTX 2080 SUPER Phoenix runs at 1.650 GHz base clock speed and has 8 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.