Comparison of PowerColor Radeon RX Vega 56 Nano Edition video card vs PNY RTX A6000 video card by specifications and benchmarks. PowerColor Radeon RX Vega 56 Nano Edition runs at 1.156 GHz base clock speed and has 8 GB of HBM2 memory, while video card PNY RTX A6000 runs at 1.410 GHz base clock speed and has 48 GB of GDDR6 memory. The TDP of the first video card is 210 W, and the second is 300 W. Compare the table of benchmark results to find out which graphic card is better.