Comparison of MSI Radeon RX 580 Gaming+ 8G video card vs Gainward GeForce RTX 3090 Phoenix video card by specifications and benchmarks. MSI Radeon RX 580 Gaming+ 8G runs at 1.257 GHz base clock speed and has 8 GB of GDDR5 memory, while video card Gainward GeForce RTX 3090 Phoenix runs at 1.395 GHz base clock speed and has 24 GB of GDDR6X memory. The TDP of the first video card is 185 W, and the second is 350 W. Compare the table of benchmark results to find out which graphic card is better.