“In terms of sound, practically none, you can hear the fan if you listened closely but nothing exaggerated. they had ventilated consoles and others put in enclosures completely closed that were running from 9am without stopping (we got there at 18:00 in the evening). they were running fine and were quite warm on the surface but nothing like our curreng generation consoles.
The only exception to that was one console that was completely enclosed in an acrylic case , it was showing a red light (where there would typically be a blue light) and there was a message on the screen that said the console’s temperature was too high. the Acrylic case was opened and within minutes the error message went away and the light went back to its normal color.