Comparison of GIGABYTE Radeon RX 580 Gaming 4G video card vs ASUS Phoenix GeForce GTX 1660 SUPER video card by specifications and benchmarks. GIGABYTE Radeon RX 580 Gaming 4G runs at 1.257 GHz base clock speed and has 4 GB of GDDR5 memory, while video card ASUS Phoenix GeForce GTX 1660 SUPER runs at 1.530 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 125 W. Compare the table of benchmark results to find out which graphic card is better.