Comparison of PowerColor Radeon RX 5700 XT video card vs Gainward GeForce RTX 3070 Phantom video card by specifications and benchmarks. PowerColor Radeon RX 5700 XT runs at 1.605 GHz base clock speed and has 8 GB of GDDR6 memory, while video card Gainward GeForce RTX 3070 Phantom runs at 1.500 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 225 W, and the second is 250 W+ 14 %. Compare the table of benchmark results to find out which graphic card is better.