Comparison of ASRock Radeon RX 6400 Challenger ITX 4GB video card vs PowerColor Radeon RX 6400 ITX 4GB video card by specs and benchmarks. ASRock Radeon RX 6400 Challenger ITX 4GB runs at 1.923 GHz base clock speed and has 4 GB of GDDR6 memory, while video card PowerColor Radeon RX 6400 ITX 4GB runs at 1.923 GHz base clock speed and has 4 GB of GDDR6 memory. The weight is different, 275 g vs --. The TDP of the first video card is 53 W, and the second is 53 W . Compare the benchmark results to find out which video card is better.