that is such a load of horseshit. 90% of my gpus are below 60 C
Are we still talking about 1080 ti? Brief search at google.com will show that even with water cooling this gpu has 45-55 C. Countless reviews of 1080 ti also say that one gpu with Air cooling operates at 80-84 C. When it comes to farm, situation is even worse, because we hold all those gpus in close proximity to one another.
I can confirm i have 12 1080 Ti all running below 70 C at 9cm apart. With only Air cooling and overclocked.