Comparison of GALAX GeForce GTX 1080 EX OC V2 video card vs Gainward GeForce GTX 1660 Ghost video card by specifications and benchmarks. GALAX GeForce GTX 1080 EX OC V2 runs at 1.620 GHz+ 1 % base clock speed and has 8 GB of GDDR5X memory, while video card Gainward GeForce GTX 1660 Ghost runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory. The TDP of the first video card is 180 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.