Comparison of Sapphire NITRO+ RX 590 8GB AMD 50 Gold Edition video card vs AMD Radeon RX 5700 XT video card by specs and benchmarks. Sapphire NITRO+ RX 590 8GB AMD 50 Gold Edition runs at 1.469 GHz base clock speed and has 8 GB of GDDR5 memory, while video card AMD Radeon RX 5700 XT runs at 1.469 GHz base clock speed and has 8 GB of GDDR6 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.