Comparison of Gigabyte GeForce RTX 2060 D6 12G video card vs PowerColor Red Devil Radeon RX 580 8GB video card by specifications and benchmarks. Gigabyte GeForce RTX 2060 D6 12G runs at 1.470 GHz base clock speed and has 12 GB of GDDR6 memory, while video card PowerColor Red Devil Radeon RX 580 8GB runs at 1.257 GHz base clock speed and has 8 GB of GDDR5 memory. The TDP of the first video card is 185 W, and the second is 185 W. Compare the table of benchmark results to find out which graphic card is better.