Comparison of Sapphire Nitro+ Radeon RX 6900 XT video card vs ASUS ROG Strix Radeon RX Vega 64 OC Gaming video card by specifications and benchmarks. Sapphire Nitro+ Radeon RX 6900 XT runs at 1.825 GHz base clock speed and has 16 GB of GDDR6 memory, while video card ASUS ROG Strix Radeon RX Vega 64 OC Gaming runs at 1.298 GHz+ 4 % base clock speed and has 8 GB of HBM2 memory. The TDP of the first video card is 340 W+ 13 %, and the second is 295 W. Compare the table of benchmark results to find out which graphic card is better.