Comparison of XFX Speedster MERC 319 Radeon RX 6900 XT Limited Black Gaming video card vs PNY RTX A5000 video card by specifications and benchmarks. XFX Speedster MERC 319 Radeon RX 6900 XT Limited Black Gaming runs at 2.150 GHz+ 18 % base clock speed and has 16 GB of GDDR6 memory, while video card PNY RTX A5000 runs at 1.170 GHz base clock speed and has 24 GB of GDDR6 memory. The TDP of the first video card is 300 W, and the second is 230 W. Compare the table of benchmark results to find out which graphic card is better.