How to Upgrade the Memory in the Late 2017 iMac Pro

In this video, we show you how to upgrade the memory of a Late 2017 27-inch iMac Pro.

Difficulty Level: 5 of 5 – Pro Install Recommended!
The iMac Pro DOES NOT feature a memory door on the back allowing for easy upgrades. Upgrading the memory requires dismantling the computer to gain access to the memory slots. This is a highly complex process that requires a skilled technician. If you don’t feel comfortable handling it yourself – let the OWC Pro Install Team do it for you! For more info, visit:

OWC recommended memory upgrades:

  • iMac Pro comes with 4 memory slots supporting up to 64GB per slot*
  • iMac Pro supports 128GB total memory
  • Install in pairs (2 modules at a time) for the best performance
  • iMac Pro’s minimum stock configuration is 32GB (8GB x 4)

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*64GB memory modules are for 2 slots only. 64GB memory modules in all 4 slots is not supported by Apple at this time. The other 2 slots will remain empty, and could be used at a later date if the 128GB memory limit is removed by Apple.


  • You have to be kidding. I’ve built two Mini-ITX computers (“Hackintoshes”) but watching this video is very stressful. IMHO if more memory is desired, the iMac Pro should be bought with it in the first place!


    • Or, Apple could have just made it easy to upgrade memory. I think they try to discourage users from installing 3rd party memory because it cuts into their profits as their memory usually coasts at least twice as much.