Comparison of SAPPHIRE NITRO+ Radeon RX 6600 XT video card vs Sapphire Pulse Radeon RX Vega 56 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 Sapphire Pulse Radeon RX Vega 56 runs at 1.208 GHz+ 4 % base clock speed and has 8 GB of HBM2 memory. The TDP of the first video card is 160 W, and the second is 280 W+ 33 %. Compare the table of benchmark results to find out which graphic card is better.