Comparison of Sapphire Radeon RX Vega 56 video card vs PNY GeForce GTX 1070 XLR8 Gaming Overclocked Twin Fan video card by specifications and benchmarks. Sapphire Radeon RX Vega 56 runs at 1.156 GHz base clock speed and has 8 GB of HBM2 memory, while video card PNY GeForce GTX 1070 XLR8 Gaming Overclocked Twin Fan runs at 1.518 GHz+ 1 % base clock speed and has 8 GB of GDDR5 memory. The TDP of the first video card is 210 W, and the second is 150 W. Compare the table of benchmark results to find out which graphic card is better.