Comparison of Sapphire Pulse Radeon RX 5700 8G video card vs GALAX RTX 3070 EX (1-Click OC) video card by specifications and benchmarks. Sapphire Pulse Radeon RX 5700 8G runs at 1.540 GHz+ 5 % base clock speed and has 8 GB of GDDR6 memory, while video card GALAX RTX 3070 EX (1-Click OC) runs at 1.500 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 220 W. Compare the table of benchmark results to find out which graphic card is better.