I would bring in extra cooling for your video card. There are a bunch of options depending on your case design. I used to have a monster PC when quad Xeon was the best you could buy. Liquid cooled the CPU and the graphics card and also installed 3 extra fans to keep things manageable on rendering.
I take it from your post that, no matter what, rendering is going to stress and heat hardware?
this is figured out.
Took the time to take apart the pc and video card and give it a total cleaning. Now seeing 80 degrees celsius has top end.
I believe standard maintenance for air cooled electronic equipment that has no air filtration system built in should be a monthly light cleaning and a semi annual thorough cleaning. One of the facilities that I occasionally work for on a freelance basis only cleans their machines when they fail. Something has failed on almost a third of my visits.
The last PC I built I put a filter in the air inlets. There's all kinds of materials you can get that do a good job of catching most of the lint without fouling up the air flow.
I have my laptops cleaned at least semi annually but I vacuum out the air vents twice a month with a low power device that doesn't spin up the internal fans. You've got to be careful that you don't damage the equipment by over revving rotating parts with too much air pressure.
If I were to set up an office workspace I'd put an electrostatic air cleaner in the office to minimize dust. One equipment failure on a project with a deadline would pay for a really high end filtration system. I run electrostatic air filtration in my home instead of the paper air filters on the HVAC system. It's amazing how little dust and lint we get in the house.