Comparison of XFX Speedster MERC 319 Radeon RX 6900 XT Limited Black Gaming video card vs MSI Radeon RX 6800 Gaming Trio Plus 16G video card by specifications and benchmarks. XFX Speedster MERC 319 Radeon RX 6900 XT Limited Black Gaming runs at 2.150 GHz+ 18 % base clock speed and has 16 GB of GDDR6 memory, while video card MSI Radeon RX 6800 Gaming Trio Plus 16G runs at 1.700 GHz base clock speed and has 16 GB of GDDR6 memory. The TDP of the first video card is 300 W, and the second is 250 W. Compare the table of benchmark results to find out which graphic card is better.