Comparison of XFX Radeon RX 5700 XT Thicc III Ultra video card vs Sapphire Pulse Radeon RX 590 8G G5 video card by specs and benchmarks. XFX Radeon RX 5700 XT Thicc III Ultra runs at 1.810 GHz+ 13 % base clock speed and has 8 GB of GDDR6 memory, while video card Sapphire Pulse Radeon RX 590 8G G5 runs at 1.810 GHz+ 13 % base clock speed and has 8 GB of GDDR5 memory. The weight is different, -- vs --. The TDP of the first video card is 225 W, and the second is 225 W . Compare the benchmark results to find out which video card is better.