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Get Up To 32GB 1867 MHz DDR3 RAM for 27″ 5K iMac

PR_5K_iMac_memOther World Computing announced today a new OWC Memory Upgrade Kit with up to 32GB of memory for the Late 2015 Apple iMac 27″ with Retina 5K display announced today by Apple. OWC 1867Mhz DDR3 memory, compatible with the new iMacs, will begin shipping on Friday, October 16 at While the new iMacs are available in configurations up to 32GB of memory, OWC is testing for support of up to 64GB of memory.

Savings up to $336 Compared to Apple Factory Upgrade
New iMac owners seeking to max-out their RAM can select the 32GB OWC memory upgrade from OWC and save $336 compared to the 32GB factory cost of $600. For even more savings, iMac with Retina 5K display owners can trade-in the two factory base 4GB memory modules.

One of the Easiest Upgrades for Your iMac
Just like the original model, a memory access panel on the rear of the newly announced iMac ejects via a simple push button located above the power input. Adding more memory is fast and simply involves installing new modules into the memory slots and reinstalling the access panel. Mac performance experts recommend selecting the least amount of factory installed RAM when ordering any iMac, taking advantage of significant cost savings by choosing OWC memory. OWC provides free installation videos on its website at

OWC Memory Upgrade Options for Late 2015 27″ iMac

All OWC Memory Options include a Lifetime Advance Replacement Warranty:

  • 4GB (1 x 4GB) PC3-14900 1867 MHz Memory Module $36.99
  • 8GB (1 x 8GB) PC3-14900 1867 MHz Memory Module $69.99
  • 8GB (2 x 4GB) PC3-14900 1867 MHz Upgrade Kit $68.00
    • Doubles the standard memory to 16GB for only $68.00, 66% savings vs. factory
  • 12GB (8GB + 4GB) PC3-14900 1867 MHz Upgrade Kit $99.00
  • 16GB (2 x 8GB) PC3-14900 1867 MHz Upgrade Kit $134.00
    • Triples the standard memory to 24GB for only $134.00 for 33% less vs. factory 16GB
  • 32GB (4 x 8GB) PC3-14900 1867 MHz Upgrade Kit $264.00
    • Offers 56% savings vs. factory installed 32GB option for the maximum installed memory.

See all of the memory options available for all Apple iMac models on OWC’s iMac Guide.

Storage Upgrade Options Extend to 8TB
Apple iMac owners can also upgrade their iMac to 8.0TB of storage with an OWC iMac drive upgrade kit, which maintain correct system fan control with the OWC in-line digital thermal sensor. OWC hard drive upgrade kits include the OWC In-line Digital Thermal Sensor, which works though the iMac’s System Management Controller to reduce fan noise and maintain proper system fan control and are currently offered for all iMac models from 2009 to current.

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  • I am buying the 27 inch 5k iMac. I want to be sure I am selecting the right option. May I install them one at a time up to the 32 gig. limit?
    8GB 1867MHz DDR3 SDRAM

    Thank you.

  • Why are Apple RAM and Apple SSD so expensive? Are they better? Fully tested?

    This is even more striking taking into account that Apple purchases millions of such components from original manufacturers, getting much better deals for sure.

  • Any idea yet on whether it is possible to set up an internal SSD/HD combo? Is the PCIe SSD used in these new machines the standard PCIe or is it the Apple proprietary drive?

    Otherwise, just thinking of setting up a drive in an external TB case and rolling a Fusion drive from that.