Comparison of ASUS Dual Radeon RX 580 OC 4G video card vs Gainward GeForce GTX 1080 Ti Phoenix video card by specifications and benchmarks. ASUS Dual Radeon RX 580 OC 4G runs at 1.257 GHz base clock speed and has 4 GB of GDDR5 memory, while video card Gainward GeForce GTX 1080 Ti Phoenix runs at 1.480 GHz base clock speed and has 11 GB of GDDR5X memory. The TDP of the first video card is 185 W, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.