Comparison of Gainward GeForce GTX 1080 Phoenix video card vs MSI GeForce GTX 1660 AERO ITX 6G 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 MSI GeForce GTX 1660 AERO ITX 6G OC 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 130 W+ 8 %. Compare the table of benchmark results to find out which graphic card is better.