Comparison of Sapphire Radeon VII video card vs PowerColor Radeon RX Vega 64 Limited Edition video card by specifications and benchmarks. Sapphire Radeon VII runs at 1.400 GHz base clock speed and has 16 GB of HBM2 memory, while video card PowerColor Radeon RX Vega 64 Limited Edition runs at 1.247 GHz 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.