Comparison of ASRock Radeon RX 5500 XT Challenger ITX 8G video card vs Sapphire Pulse Radeon RX 5500 XT 4G video card by specifications and benchmarks. ASRock Radeon RX 5500 XT Challenger ITX 8G runs at 1.607 GHz base clock speed and has 8 GB of GDDR6 memory, while video card Sapphire Pulse Radeon RX 5500 XT 4G runs at 1.607 GHz base clock speed and has 4 GB of GDDR6 memory. The TDP of the first video card is 130 W, and the second is 135 W+ 4 %. Compare the table of benchmark results to find out which graphic card is better.