Comparison of GIGABYTE Radeon RX 590 Gaming 8G video card vs Gainward GeForce RTX 3080 12GB Phantom video card by specifications and benchmarks. GIGABYTE Radeon RX 590 Gaming 8G runs at 1.469 GHz base clock speed and has 8 GB of GDDR5 memory, while video card Gainward GeForce RTX 3080 12GB Phantom runs at 1.260 GHz base clock speed and has 12 GB of GDDR6X memory. The TDP of the first video card is 225 W, and the second is 350 W. Compare the table of benchmark results to find out which graphic card is better.