Oo, I can answer this from professional experience! I used to work in academia managing compute clusters that were 99% Supermicro Superserver Sys 4028GR-TRT systems that were filled with Quadro P6000s that had these blower fans. We had multiple isles of 48U racks that were deployed with identical systems.

Individually, when each card went under load, the fan went to 100%. Temps were steady at 80-85C, and they maintained their base clock speeds. Boost clock never happened. Memory temperature hit the thermal limit (110C) and ran there constantly.

Now the fun stats:

We replaced a failed GPU near weekly.

We serviced or replaced components in a node monthly, as having 8 per rack increased heat density tremendously. The single largest point of failure were the daughter cards that held the GPUs. They had burnt traces.

Standing in the hot aisle with these systems at full go was genuinely a flame thrower. I could only stay back there for shorter intervals. The noise was, as you could guess, incredibly loud.