Comparison of Sapphire Pulse Radeon RX 580 4G G5 video card vs GALAX GeForce RTX 2070 SG Edition video card by specifications and benchmarks. Sapphire Pulse Radeon RX 580 4G G5 runs at 1.257 GHz base clock speed and has 4 GB of GDDR5 memory, while video card GALAX GeForce RTX 2070 SG Edition runs at 1.410 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 185 W, and the second is 175 W. Compare the table of benchmark results to find out which graphic card is better.