Comparison of XFX Speedster MERC 319Radeon RX 6750 XT Black Gaming video card vs Gainward GeForce RTX 2080 SUPER Phantom GLH video card by specifications and benchmarks. XFX Speedster MERC 319Radeon RX 6750 XT Black Gaming runs at 2.324 GHz+ 6 % base clock speed and has 12 GB of GDDR6 memory, while video card Gainward GeForce RTX 2080 SUPER Phantom GLH runs at 1.650 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 250 W. Compare the table of benchmark results to find out which graphic card is better.