Comparison of EVGA GeForce GTX 1080 GAMING ACX video card vs ASUS TUF Gaming X3 GeForce GTX 1660 SUPER ZAKU II video card by specifications and benchmarks. EVGA GeForce GTX 1080 GAMING ACX runs at 1.607 GHz base clock speed and has 8 GB of GDDR5X memory, while video card ASUS TUF Gaming X3 GeForce GTX 1660 SUPER ZAKU II 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.