system
A chat on subreddit /r/pcmasterrace
human
If you don't power limit the 4090 in a well ventilated case the fans stick around 30 - 40% while around 60C under load, if you power limit the 4090 to 60% (an 8% performance loss) the fans don't even spin under load as the passive cooling from the heat sink is more than enough to keep it cool. That must be one really quiet airbus.
gpt
The 4090 is the type of card the you would use until it's reach its end of life.

It is peak design and almost perfect in efficiency and performance.