Comparison of ASUS TUF GAMING Radeon RX 6900 XT OC video card vs PowerColor Radeon RX Vega 64 Red Devil video card by specifications and benchmarks. ASUS TUF GAMING Radeon RX 6900 XT OC runs at 1.900 GHz+ 4 % base clock speed and has 16 GB of GDDR6 memory, while video card PowerColor Radeon RX Vega 64 Red Devil runs at 1.417 GHz+ 14 % base clock speed and has 8 GB of HBM2 memory. The TDP of the first video card is 300 W, and the second is 295 W. Compare the table of benchmark results to find out which graphic card is better.