Comparison of PowerColor Red Devil Radeon RX 6800 XT video card vs MANLI GeForce RTX 2080Ti Gallardo (M3442+N504) video card by specifications and benchmarks. PowerColor Red Devil Radeon RX 6800 XT runs at 1.900 GHz+ 4 % base clock speed and has 16 GB of GDDR6 memory, while video card MANLI GeForce RTX 2080Ti Gallardo (M3442+N504) runs at 1.350 GHz base clock speed and has 11 GB of GDDR6 memory. The TDP of the first video card is 300 W, and the second is 260 W+ 4 %. Compare the table of benchmark results to find out which graphic card is better.