Comparison of XFX Speedster MERC 319 Radeon RX 6800 Black Gaming video card vs MSI GeForce GTX 1080 GAMING Z 8G video card by specifications and benchmarks. XFX Speedster MERC 319 Radeon RX 6800 Black Gaming runs at 1.850 GHz+ 9 % base clock speed and has 16 GB of GDDR6 memory, while video card MSI GeForce GTX 1080 GAMING Z 8G runs at 1.607 GHz base clock speed and has 8 GB of GDDR5X memory. The TDP of the first video card is 250 W, and the second is 180 W. Compare the table of benchmark results to find out which graphic card is better.