On both the Zotac Mini 1070 ti and my EVGA SC 1070 ti cards, I use a power setting of about 105 watts (I vary this up to 5 watts either side to hit my "target total machine power consumption", with very small effect on efficiency), +200 core +700 memory using nvidia-settings.
At 105 watts, all of my 1070 ti cards hit right around 465 sol/s for 4.4ish efficiency.
50% fan setting in a room that is 80F was putting the card temps in the low 50s (EVGA) or mid 50s (Zotac) as long as I wasn't putting the card air intake right next to the CPU on the motherboard.
I'm not sure how nvOS settings compare to nvidia-settings though, I've NEVER seen a card that worked at all with +1000 in nvidiasettings on the memory clock.
The memory speed DOES make a noticeable difference in hashrate.
https://bitcointalk.org/index.php?topic=2324651.msg23996225#msg23996225 for my initial testing under Windows - I never did figure out why the "60% TDP" setting in Afterburner was only giving me 103 watts though (it should have been 106).