Comparison of XFX Radeon RX 580 GTS Black Edition 8GB video card vs XFX Speedster QICK 319 Radeon RX 6800 Black Gaming video card by specifications and benchmarks. XFX Radeon RX 580 GTS Black Edition 8GB runs at 1.257 GHz base clock speed and has 8 GB of GDDR5 memory, while video card XFX Speedster QICK 319 Radeon RX 6800 Black Gaming runs at 1.850 GHz+ 9 % base clock speed and has 16 GB of GDDR6 memory. The TDP of the first video card is 185 W, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.