OWC is pleased to announce the first 64GB support for the new Apple iMac with 27” Retina 5K display via our MaxRAM certification program. In addition to kits now being offered for up to 32GB utilizing 4GB and 8GB modules, OWC will shortly begin offering kits of 32GB, 48GB and 64GB, utilizing modules of up to 16GB per slot for up to double the maximum memory offered via Apple factory options. https://eshop.macsales.com/shop/apple/memory/iMac
The ability to utilize up to 64GB really puts these new iMac models in a league of their own, opening up new possibilities for professional applications.
It is very important to note that only these newly introduced “Apple iMac with 27-inch Retina 5K display Late 2015” models with model ID 17,1 are able to support these higher memory configurations. Prior iMac 27” with Retina Display models support a maximum of 32GB. Check out our easy to use iMac memory guide online here to see the maximum available memory options for all Apple iMacs.
The in-house Mac Testing labs, which now include Apple’s latest iMacs, provide a tremendous benefit in the ongoing testing and certification of memory for every Mac. Our testing labs further enable us to test, certify, and support options above and beyond factory offerings for greater flexibility for the real-world needs of our customers.
OWC Recommended Memory Upgrades
OWC has a great lineup of memory options to fit any budget or need for the Late 2015 27” iMac with Retina 5K display.
- 8GB Kit 4GBx2 only $68 (That’s 16GB with the original 8GB!)
- 16GB Kit 8GBx2 only $134 (That’s 24GB with the original 8GB!)
- 32GB Kit 8GBx4 only $264
- 16GB single module $329.99 (24GB with the original 8GB plus save a memory slot for future upgrade capabilities)
- 32GB 16GBx2 $599 (That’s 40GB with the original 8GB!)
- 48GB 16GBx2 + 8GBx2 $729 (That’s 50% more memory vs. maximum factory offered option.)
- 64GB 16GBx4 $1195 (Double the maximum factory offered memory option.)
More Late 2015 iMac coverage from OWC
- OWC Tears Down 21.5-inch iMac Retina 4K, Confirms Memory Is Soldered
- OWC Tears Down New 27-Inch iMac with Retina 5K display
- Apple announces new iMac lineup, accessories
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I have a 2017 27 inch 3.4 5k iMac. I have purchased 3200mhz ram before I read this thread. Have your labs tested faster ram to verify if the machine will recognize it?
Hello guys, id like to know if there is a possibility to drop a xeon in a imac5kmidle2015,also is itpossible to trick the imac to get 64 gigs of ram working with the imac5kmid2015
That’s nice!
But why apple do not provide this option on the official store?
At the time of Original Manufacture, that size of RAM was not on the market.
If the new motherboard does not support DDR4, does it support RAM faster than PC314900 (1867MHz DDR3)? And how come Intel says only 1600MHz DDR3 is supported? http://ark.intel.com/products/88195/
Hello Chris,
The new 27″ iMac 5K has been tested by our very own OWC Memory Test Lab. With extensive testing, we were able to confirm that the maximum speed of compatible RAM is 1867MHz with a maximum capacity of 64GBs.
If you have any further questions, please feel free to contact OWC!
There are those who are claiming to have upgraded the RAM in the in their new iMacs with 2133 MHz RAM: http://forums.macrumors.com/threads/2133mhz-ram-test-results.1929801/
What are your thoughts on this?
Hello David,
Here at OWC we have been able to confirm that the maximum speed of compatible RAM is 1867MHz with a maximum capacity of 64GBs. This will ensure flawless performance.
If you have any further questions, please feel free to contact our Technical Support Team!
Macs are pro
Is the RAM soldered to the motherboard or more easily replaceable?
Hi, Shahid. Replacing memory in the 27″ iMac with Retina 5K is done by accessing a panel on the rear of the iMac that ejects via a simple push button located above the power input. Then simply install new modules into the memory slots and reinstall the access panel. OWC provides free installation videos for further instruction.
Is it possible to upgrade to DDR4?
Not without Apple changing the motherboard, and the unfortunate thing is that 8Gbit DDR4 would likely have been cheaper.