Comparison of Gainward GeForce GTX 1080 Phoenix video card vs GALAX GeForce GTX 1660 Super (1-Click OC) video card by specifications and benchmarks. Gainward GeForce GTX 1080 Phoenix runs at 1.607 GHz base clock speed and has 8 GB of GDDR5X memory, while video card GALAX GeForce GTX 1660 Super (1-Click OC) runs at 1.530 GHz base clock speed and has 6 GB of GDDR6 memory. The TDP of the first video card is 180 W, and the second is 125 W. Compare the table of benchmark results to find out which graphic card is better.