Comparison of XFX Speedster MERC 319 Radeon RX 6800 XT Black Gaming video card vs PNY RTX A2000 12GB video card by specifications and benchmarks. XFX Speedster MERC 319 Radeon RX 6800 XT Black Gaming runs at 1.925 GHz+ 5 % base clock speed and has 16 GB of GDDR6 memory, while video card PNY RTX A2000 12GB runs at 0.562 GHz base clock speed and has 12 GB of GDDR6 memory. The TDP of the first video card is 300 W, and the second is 70 W. Compare the table of benchmark results to find out which graphic card is better.