Comparison of Sapphire NITRO+ Radeon RX 570 8G G5 video card vs Sapphire NITRO+ Radeon RX 570 4G G5 video card by specs and benchmarks. Sapphire NITRO+ Radeon RX 570 8G G5 runs at 1.168 GHz base clock speed and has 8 GB of GDDR5 memory, while video card Sapphire NITRO+ Radeon RX 570 4G G5 runs at 1.168 GHz base clock speed and has 4 GB of GDDR5 memory. The weight is different, -- vs --. The TDP of the first video card is 195 W+ 30 %, and the second is 195 W+ 30 % . Compare the benchmark results to find out which video card is better.