TehPenguin, I've noticed the same with my GTX 1060. Not tempatures, but increased clock speed.
I can hit 2100mhz at stock voltage with a custom curve, then with max voltage, I can hit 2164mhz (can hit almost 2200mhz but isn't stable for long) without crashing.
But for now, I just use a regular 50+ offset overclock on the core for 2050mhz peak boost at peak temperatures. Going higher nets me 1 frame roughly so it's not worth it. Overclocking vram is more important.