Yes, with regards to performance, Nvidia GeForce GTX 1060 outperforms, GeForce GTX 1060 5GB by 7.9%.
The GTX 1060 is more energy-efficient considering its peformance, consuming 120 watts to produce 3DMark score of 4215. By comparing its benchmark score to its power consumption, we get an efficiency score of 35.1. GTX 1060 5GB's efficiency score is 32.6, 7.9% lower, making GTX 1060 the smarter choice in terms of power consumption.
When considering value for money, GTX 1060 offers a better deal than, GeForce GTX 1060 5GB by 10.0%. Here is more in depth overview of the price and used prices of GTX 1060 Price History and GTX 1060 5GB Price History