Stephen Hackett, writing for iMore:

I decided to take the conservative route, so I ordered the regular iMac. It showed up the day after Christmas. I slapped 32GB of OWC RAM in it — for a total of 40GB — and migrated my data from my trusty 2015 model.

Unfortunately, it didn’t take long to realize that I had made a mistake. Even during the migration, I could hear the new iMac’s fan blowing, and once I was logged in, it was even louder.

After any data migration, a Mac has a lot to do behind the scenes. Photos.app was busy reindexing my library, and Dropbox was working hard to make sure everything in its folder was supposed to be there. I let things run over night, thinking that by the next morning, this new iMac would be as quiet as my old one in normal usage.

Sadly, that wasn’t the case. I’ve heard very mixed things about this from people on Twitter and friends with 2017 iMacs, so I can’t say this is a universal truth, but the Core i7-powered iMac on my desk seemed to ramp up its fan far more often than my older i5, and when it did, the noise was noticeably louder than before.

Indexing Photos and Dropbox is not something that should make a powerful iMac, equipped with a Core i7, costing close to $3K, sweat. I know that because I built a Hackintosh based on an iMac’s specs — it has a much beefier GPU but it’s basically a 2013 iMac on paper. Its fans still spin at their slowest speed when the machine is chugging along, crunching 4K data in Final Cut Pro X. If the top-of-the-line iMac starts screaming at the top of its lungs during the basic stuff, then something’s wrong. It could be a software issue, but I’ve heard enough people complaining about the fans in various scenarios, that this sounds like a bad design decision.

Granted, the iMac Pro does seem to solve the problems Stephen’s having, but to me it sound as if his issues are the most basic tasks, which most Mac users do. A $5K+ iMac Pro should not be a “solution” to this problem. An iMac Pro is a workstation, aimed at demanding workflows. And I still have my doubts whether this is the appropriate machine for the task, especially since a 2010 Mac Pro equipped with a Vega 64 is still faster in OpenCL than a 2017 iMac Pro.

Apple’s crusade for making everything thinner and sleeker is ruining their machines. They are making their products more and more niche, while not providing computers for the masses. I’m sure there’s a market for a desktop computer like a Mac Pro, but with cheaper hardware and full-sized GPUs – I know I’d switch to that from my Hackintosh in a heartbeat, if the GPU was upgradeable, and I’m sure many more would too.