Comparison of XFX Radeon RX 580 Double Dissipation 8GB video card vs GALAX GeForce RTX 2080 OC White video card by specifications and benchmarks. XFX Radeon RX 580 Double Dissipation 8GB runs at 1.257 GHz base clock speed and has 8 GB of GDDR5 memory, while video card GALAX GeForce RTX 2080 OC White 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.