that is GREAT
Test adjusting the Voltage with your OC software.
Usually 85% - 95% is the range where Temp drops (vs 100%) & performance is not impacted much if at all.
Nvidia Boost will allow a higher MHz on the GPU if it is cooler; so you do not see any big drops in performance, outside of benchmark runs (then you want/ need better cooling & a cold room, to max your score ... keep GPU 50C or lower
)