Comparison of GIGABYTE Radeon RX 580 Gaming 8G MI video card vs Gainward GeForce RTX 2060 Ghost OC 12GB video card by specs and benchmarks. GIGABYTE Radeon RX 580 Gaming 8G MI runs at 1.257 GHz base clock speed and has 8 GB of GDDR5 memory, while video card Gainward GeForce RTX 2060 Ghost OC 12GB runs at 1.257 GHz base clock speed and has 12 GB of GDDR6 memory. The weight is different, -- vs --. The TDP of the first video card is 185 W, and the second is 185 W . Compare the benchmark results to find out which video card is better.