There isn't any thermal slowdowns on the M1 devices with a fan, no. The only M1 device without a fan shows thermal limitations, though. Not an overheating issu

There isn't any thermal slowdowns on the M1 devices with a fan, no. The only M1 device without a fan shows thermal limitations, though. Not an overheating issue, no, but the M1 still benefits from a fan, and obviously whatever Apple does in a Mac Pro class machine will also have a fan. They aren't going to keep at ~25W in a full size desktop, that'd be nonsense.