Comparison of Gainward GeForce GTX 1660 SUPER Pegasus video card vs Gainward GeForce RTX 2080 SUPER Phoenix GS video card by specifications and benchmarks. Gainward GeForce GTX 1660 SUPER Pegasus runs at 1.530 GHz base clock speed and has 6 GB of GDDR6 memory, while video card Gainward GeForce RTX 2080 SUPER Phoenix GS runs at 1.650 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 125 W, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.