2019 iMac 27-inch 8-core i9 vs. ‘legacy’ Mac Pro models

“Can a 2019 iMac i9 replace your ‘legacy’ Mac Pro?” Rob Morgan writes for Bare Feats. “It depends on what you run.”

Morgan writes, “Before you dump your Mac Pro tower or cylinder for an iMac or iMac Pro, you may want to hold off until June (WWDC) to see if Apple announces the 2019 (or 2020) Modular Mac Pro.”

“BTW, the iMac i9 exhibited some thermal throttling, dropping below the base 3.6GHz frequency when we were running the LuxMark CPU + GPU OpenCL render test,” Morgan writes. “Not only did the iMac Pro NOT throttle but it maintained 3.9GHz — clearly above the base 3.2GHz. The Mac Pro cylinder not only maintained Turbo Boost but was dead silent.”

Much more, including all of the benchmarks, in the full article here.

MacDailyNews Take: Very interesting. iMac vs. iMac Pro vs. cheese grater Mac Pro vs. trashcan Mac Pro really depends on what apps you need to run.


  1. From the report: “BTW, the iMac i9 exhibited some thermal throttling, dropping below the base 3.6GHz frequency when we were running the LuxMark CPU + GPU OpenCL render test. ” Even the thermally constrained trashcan was able to maintain full processor speed for this test.

  2. “The 2019 iMac i9 beat the 2010 Mac Pro tower in 8 out of 11 tests. It beat the 2013 Mac Pro cylinder in 9 out of 11 tests.”

    So basically the high end Apple product has barely accelerated in 9 years.

    1. Exactly. Macs are now constrained by fashion.

      It also has to be noted that GPU intensive tasks are often better handled by an upgraded 2010-2012 Mac Pro workstation than either the trashcan or current model iMac because … surprise to Fat Ass Schiller: TECHNOLOGY MARCHES ON. Graphics cards available today blow away anything available the last time Apple bothered to update its offerings. If Apple insists on designing computers that cannot be user-upgraded, or upgraded only through bottlenecks like Thunderbolt (which yes are slower than internal PCI expansions), then Apple deserves all the scorn it gets from pro level Mac users.

      1. While your dollar value is probably a factor of two to three low, consider this: Most professionals don’t want to spend the time and effort to maintain a Hacintosh. Most times there are significant updates to any major software package running on a Hacintosh (especially major updates to macOS) there are patches that need to be installed and/or run on the Hacintosh to make it still run properly. Further, there are often little inconsistencies and things that just won’t run properly no matter what you can do.

        Finally, businesses that have historically run many Mac Pro machines are not going to replace them with Hacintoshes. The maintenance nightmare is just too great. Unfortunately, many of them have already switched to Windows machines. Apple is likely to get few of those back.

        Now, if you as an individual want to go the Hacintosh route, I say go for it. Apple has virtually abandoned the people who truly need a REAL pro machine. I find little justification for in people who want to spend the time and effort on a Hacintosh to still buy a fake Mac Pro from Apple.

Reader Feedback

This site uses Akismet to reduce spam. Learn how your comment data is processed.