Comparison of GALAX GeForce GTX 1080 EX OC V2 video card vs ZOTAC GAMING GeForce GTX 1660 SUPER Twin Fan 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 ZOTAC GAMING GeForce GTX 1660 SUPER Twin Fan 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.