Comparison of GALAX GeForce GTX 1660 video card vs GALAX GeForce RTX 2080 EX (1-Click OC) video card by specifications and benchmarks. GALAX GeForce GTX 1660 runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory, while video card GALAX GeForce RTX 2080 EX (1-Click OC) 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.