V100 GPU on new workstation getting very warm when idle

Ok, so according to the answer here:

https://forums.developer.nvidia.com/t/why-the-pstate-of-v100-does-not-change-always-p0/116746/3

the V100 only has performance state P0, which is the highest and implies that a fairly high power output should be expected, even when idle.

Is there any documentation anywhere for this card, that clearly explains the usage, performance levels, etc? I haven’t used a passively-cooled GPU before, and I would be very interested to know things like ‘how hot is too hot?’, ‘what sort of cooling setup is recommended?’. At what temp. will I start to see a loss of performance due to throttling?