Comparison of Gainward GeForce GTX 1660 Pegasus OC video card vs EVGA GeForce RTX 2080 BLACK video card by specifications and benchmarks. Gainward GeForce GTX 1660 Pegasus OC runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory, while video card EVGA GeForce RTX 2080 BLACK runs at 1.515 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 120 W, and the second is 210 W-2 %. Compare the table of benchmark results to find out which graphic card is better.