Comparison of Sapphire Radeon RX 5700 8G video card vs Gainward GeForce RTX 2070 SUPER Phantom video card by specifications and benchmarks. Sapphire Radeon RX 5700 8G runs at 1.465 GHz base clock speed and has 8 GB of GDDR6 memory, while video card Gainward GeForce RTX 2070 SUPER Phantom runs at 1.605 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 180 W, and the second is 215 W. Compare the table of benchmark results to find out which graphic card is better.