By default the GTX 1060 operates at a core clock speed of 1506MHz with a boost clock of 1709MHz. The GDDR5 memory is also clocked at 2GHz. We were able to push the memory up to 2.25GHz while the core reached 1736MHz resulting in a boost clock of 1939MHz. However, due to the way GPU Boost 3.0 technology works the GTX 1060 spent most of its time operating at around 2.1GHz. We weren't able to increase the voltage but the power target was maxed out at 119%.
The overclocking performance of the GTX 1060 won't be blowing any socks off but 12% more performance in Far Cry Primal allowed the GTX 1060 to match the R9 390X.
We saw a 14% performance boost in Rise of the Tomb Raider as the GTX 1060 went from 58fps to 66fps, which was enough to jump well ahead of the Radeon R9 Nano.
Testing with The Division we saw a 9% performance gain from our GTX 1060 overclock -- not particularly impressive but that's almost twice the gain seen from the RX 480 overclock.