No, in terms of performance, Nvidia GeForce GTX 1070 is slower than AMD Radeon RX Vega 56. AMD Radeon RX Vega 56 outperformes Nvidia GeForce GTX 1070 by 11.4% in 3Dmark benchmark.
The GTX 1070 is more energy-efficient considering its performance, having power consumption of 150 watts and a 3DMark score of 6080. By comparing its benchmark score to its power consumption, we get an efficiency score of 41. RX Vega 56's efficiency score is 32 .So GTX 1070 leads by 28.1%, making it the smarter choice in terms of power consumption.
When considering value for money, GTX 1070 offers a better deal than, Radeon RX Vega 56 by 40.0%.