Comparison of ASUS AREZ Strix Radeon RX 580 OC video card vs Gigabyte GeForce RTX 2060 Windforce OC 12G video card by specs and benchmarks. ASUS AREZ Strix Radeon RX 580 OC runs at 1.257 GHz base clock speed and has 8 GB of GDDR5 memory, while video card Gigabyte GeForce RTX 2060 Windforce OC 12G 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.