Comparison of Sapphire Pulse Radeon RX 5700 8G video card vs XFX Radeon RX 5700 XT Double Dissipation 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 XFX Radeon RX 5700 XT Double Dissipation 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 225 W. Compare the table of benchmark results to find out which graphic card is better.