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As impressive as the performance of iMac Pro looks, the price could make it impractical for many professionals and businesses. Having seen past iMacs overheat, professionals will also continue to be concerned about the cooling of the iMac Pro despite Apple's WWDC assurances. In the end, a high-powered Mac tower would have likely cost less, been more modular, and attracted a lot more enterprise buyers.

I maintain an office full of iMacs and other Macs, and have done so for over 15 years. We have NEVER had an iMac "overheat." Not once. . . and some of the applications are very processor intense. Sorry. That is pure FUD. The heat management and fan design in iMacs is very well engineered. What people were complaining about was a stuck software control that caused the fans to blow continually, not an overheat situation. It was fixed by using a keyboard command resetting the System Management Control (SMC). As for a Mac tower, a Mac Pro update is still in the works.

Yet, Apple itself acknowledged the problem with overheating that many user were having. As always, your usage experiences with any device may vary. Your experiences are not necessarily representative of the whole marketplace users.

I burned out a power supply in my first Mac. It was one of these.

I had a gizmo called a Thunderscan, an optical scanner that replaced the ribbon cartridge in an Imagewriter. It drew power from the floppy port. It wasn't designed to stay on for long, and I walked away and forgot that it was plugged in. The Plus had no hard drive and hence no cooling fan, so its power supply was pretty wimpy.