Comparison of ASUS Dual Radeon RX 580 8G video card vs GALAX GeForce RTX 2080 SG Edition video card by specifications and benchmarks. ASUS Dual Radeon RX 580 8G runs at 1.257 GHz base clock speed and has 8 GB of GDDR5 memory, while video card GALAX GeForce RTX 2080 SG Edition runs at 1.515 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 185 W, and the second is 215 W. Compare the table of benchmark results to find out which graphic card is better.