Comparison of Sapphire Pulse Radeon RX Vega 56 video card vs EVGA GeForce GTX 1080 GAMING ACX+LED video card by specifications and benchmarks. Sapphire Pulse Radeon RX Vega 56 runs at 1.208 GHz+ 4 % base clock speed and has 8 GB of HBM2 memory, while video card EVGA GeForce GTX 1080 GAMING ACX+LED runs at 1.607 GHz base clock speed and has 8 GB of GDDR5X memory. The TDP of the first video card is 280 W+ 33 %, and the second is 180 W. Compare the table of benchmark results to find out which graphic card is better.