Under extreme load, it’s not unusual for your Mac to sound like it is about to take off.
This means you will hear considerable fan noise when your machine is under load. While your Mac is hot, you should expect the fans to attempt to cool it down. The most obvious is that the Mac feels hot to the touch, particularly on the underside of the chassis if you have a MacBook. There are several tell-tale signs that your Mac is running unusually hot.
