Comparison of XFX Speedster MERC 319 Radeon RX 6900 XT Limited Black Gaming video card vs MSI Radeon RX 6900 XT Gaming Z Trio 16G video card by specs 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 6900 XT Gaming Z Trio 16G runs at 2.150 GHz+ 18 % base clock speed and has 16 GB of GDDR6 memory. The weight is different, -- vs 1581 g. The TDP of the first video card is 300 W, and the second is 300 W . Compare the benchmark results to find out which video card is better.