Comparison of Sapphire Nitro+ Radeon RX 6800 XT video card vs PNY RTX A6000 video card by specs and benchmarks. Sapphire Nitro+ Radeon RX 6800 XT runs at 1.925 GHz+ 5 % base clock speed and has 16 GB of GDDR6 memory, while video card PNY RTX A6000 runs at 1.925 GHz+ 5 % base clock speed and has 48 GB of GDDR6 memory. The weight is different, 1240 g vs --. The TDP of the first video card is 300 W, and the second is 300 W . Compare the benchmark results to find out which video card is better.