Comparison of GIGABYTE Radeon RX 580 Gaming 4G video card vs GALAX GeForce RTX 2080 OC 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 GALAX GeForce RTX 2080 OC 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.