Comparison of GIGABYTE AORUS Radeon RX 580 8G video card vs EVGA GeForce GTX 1660 Ti XC BLACK GAMING video card by specifications and benchmarks. GIGABYTE AORUS Radeon RX 580 8G runs at 1.257 GHz base clock speed and has 8 GB of GDDR5 memory, while video card EVGA GeForce GTX 1660 Ti XC BLACK GAMING runs at 1.500 GHz base clock speed and has 6 GB of GDDR6 memory. The TDP of the first video card is 185 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.