Comparison of GIGABYTE AORUS Radeon RX 580 XTR 8G video card vs GALAX GeForce GTX 1660 SUPER EX White (1-Click OC) video card by specifications and benchmarks. GIGABYTE AORUS Radeon RX 580 XTR 8G runs at 1.257 GHz base clock speed and has 8 GB of GDDR5 memory, while video card GALAX GeForce GTX 1660 SUPER EX White (1-Click OC) 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.