Comparison of XFX Speedster MERC 319 Radeon RX 6800 Black Gaming video card vs MANLI GeForce RTX 2080 Gallardo (M3445+N502-00) 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 MANLI GeForce RTX 2080 Gallardo (M3445+N502-00) runs at 1.515 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 250 W, and the second is 225 W+ 5 %. Compare the table of benchmark results to find out which graphic card is better.