Comparison of XFX SPEEDSTER SWFT 319 Radeon RX 6800 CORE video card vs Sapphire Radeon RX Vega 64 video card by specifications and benchmarks. XFX SPEEDSTER SWFT 319 Radeon RX 6800 CORE runs at 1.700 GHz base clock speed and has 16 GB of GDDR6 memory, while video card Sapphire Radeon RX Vega 64 runs at 1.247 GHz base clock speed and has 8 GB of HBM2 memory. The TDP of the first video card is 250 W, and the second is 295 W. Compare the table of benchmark results to find out which graphic card is better.