Comparison of Gainward GeForce GTX 1660 Pegasus OC video card vs Gainward GeForce RTX 2080 TRIPLE 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 Gainward GeForce RTX 2080 TRIPLE 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 215 W. Compare the table of benchmark results to find out which graphic card is better.