Comparison of XFX Radeon RX 6400 SPEEDSTER SWFT105 video card vs ASRock Radeon RX 6400 Challenger ITX 4GB video card by specifications and benchmarks. XFX Radeon RX 6400 SPEEDSTER SWFT105 runs at 1.923 GHz base clock speed and has 4 GB of GDDR6 memory, while video card ASRock Radeon RX 6400 Challenger ITX 4GB runs at 1.923 GHz base clock speed and has 4 GB of GDDR6 memory. The TDP of the first video card is 53 W, and the second is 53 W. Compare the table of benchmark results to find out which graphic card is better.