@shreeyak You can’t cheat the laws of physics
If your 1080Ti GPU is running at 85°c under load, and its fan(s) run at 3200rpm for several hours (I use Psensor on Ubuntu), that extra heat has to go somewhere. Inside the small wolume of a PC case = bad idea.
Now using a water-cooling system might be a solution, though more expensive. Plus, afaik, any watercooling system, whether for CPU or GPU, requires a dedicated spot on the PC frame to place its cooling/exhaust fan/radiator. On most standard PC cases, that spot will be in place of the regular 120mm air-fan in the upper rear panel. If you use it for your watercooled GPU’s fan, then you’ll need another spot for the regular 120 mm air-fan (the one in charge of expulsing the hot air from your non-watercooled CPU cooler + all the heat sums).
If you go for one GPU watercooled and one CPU watercooled, then you’ll need a case with 3 spots (water + water + air) for exit fans.
It exists, it’s not rare but more expensive, so you need to think this through in advance when choosing your PC case.
Last tip: when running 6-hours+ model training with CPU/GPU at 80%+ workload, open your PC case by taking off the side panel and “let it breathe”.
Some will say “No way, it will screw up the internal airflow designed by the engineers”.
My experience is “All the temperatures dropped, so screw the engineer ‘internal airflow’ gibberish and I’ll stick to the data”.
So try it and look at the Temp/FanRPM data from Psensor & co.
Last tip after the last tip: your PC case air intakes (usually in front and below) are insanely efficient at gathering all the dust in the flat/room, think of your PC case as a vacuum-cleaner always on.
Especially if placed on the ground (vs. on a desk/shelf) and uber-especially if you have a pet dog bringing all kind of shit in his fur/pelt twice a day.
Using a real vacuum-cleaner on those air intakes once a month can do miracles