Comparison of ASRock Radeon RX 7900 XTX Taichi 24GB OC video card vs PowerColor Radeon RX 7900 XTX 24GB video card by specifications and benchmarks. ASRock Radeon RX 7900 XTX Taichi 24GB OC runs at 1.900 GHz base clock speed and has 24 GB of GDDR6 memory, while video card PowerColor Radeon RX 7900 XTX 24GB runs at 1.900 GHz base clock speed and has 24 GB of GDDR6 memory. The TDP of the first video card is 355 W, and the second is 355 W. Compare the table of benchmark results to find out which graphic card is better.