Comparison of SAPPHIRE NITRO+ Radeon RX 6600 XT video card vs ASUS ROG Strix Radeon RX Vega 64 Gaming video card by specifications and benchmarks. SAPPHIRE NITRO+ Radeon RX 6600 XT runs at 1.968 GHz base clock speed and has 8 GB of GDDR6 memory, while video card ASUS ROG Strix Radeon RX Vega 64 Gaming runs at 1.247 GHz base clock speed and has 8 GB of HBM2 memory. The TDP of the first video card is 160 W, and the second is 295 W. Compare the table of benchmark results to find out which graphic card is better.