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OWC

OWC 8GB (2x4GB) 2400MHZ DDR4 SO-DIMM PC4-19200 Memory Upgrade for 2017 iMac 27 inch with Retina 5K Display

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Availability: In Stock.
Fulfilled by Amazon

Arrives Tuesday, Nov 26
Order within 15 hours and 52 minutes
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Size: 8 GB


Features

  • 8.0GB (2 x 4.0GB) 2400MHZ DDR4 SO-DIMM PC4-19200 260 Pin CL17 Memory Upgrade for Mid 2017 iMac 27" w/ Retina 5K models and PCs which utilize PC4-19200 SO-DIMM
  • Memory Upgrade Kit For iMac 27" 2017 with Retina 5K display with processors: 27" i5 3.4GHz, 27" i5 3.5GHz, 27" i5 3.8GHz, 27" i7 4.2GHz
  • Install in pairs (2 modules at a time) for the best performance, iMac 5K comes with 4 memory slots supporting up to 16GB per slot (iMac 5K supports 64GB total memory)
  • Warranty Safe Upgrade
  • OWC Memory Lifetime Limited Warranty including the OWC Lifetime Advanced Replacement Program

Description

OWC MEMORY: Memory made for your Mac. At OWC, we want your Mac to perform faster and last longer. That’s why we engineer memory specifically tested and optimized for Mac. There’s OWC memory for nearly every upgradeable Mac, from the PowerMac G4 to the latest 2017 iMacs. Plus we make it easy to upgrade by yourself with step-by-step install videos, and included toolkits. It’s the easiest way to improve your Mac’s performance. OWC memory is specifically engineered for compatibility with your Mac. We start with the highest-quality components, and then create memory to the exacting speed, capacity, and programming specifications of nearly every upgradeable Apple computer. The result is JEDEC-compliant memory that’s a perfect fit for a faster Mac. ​ Memory Upgrade Kit compatible with 2017 iMac 27" with Retina 5K Display Compatibility: 2017 iMac 27" with Retina 5K display with processors: 27" i5 3.4GHz 27" i5 3.5GHz 27" i5 3.8GHz 27" i7 4.2GHz MEMORY THAT GOES FURTHER: OWC memory is hand-checked and tested for quality at each step in the manufacturing process. But it doesn’t stop there. We own and maintain state- of-the-art facilities that feature nearly every Mac manufactured over the past two decades. That’s because we don’t just relentlessly test for quality and reliability. We test in actual machines to make sure OWC memory is optimized to deliver a lifetime of superior performance in your Mac. It’s the OWC Difference. We’re laser-focused on helping you get the absolute most from your Mac. So we test the true memory limit of each Apple computer. We found that most Macs support more memory than the official factory maximum. With OWC memory, you can truly max out your Mac with up to double the factory-supported limit. OWC 8GB (2 x 4GB) 2400MHZ DDR4 SO-DIMM PC4-19200 Memory Upgrade For 2017 iMac 27 inch with Retina 5K display OWC RECOMMENDED MEMORY UPGRADES: ​iMac 5K comes with 4 memory slots supporting up to 16GB per slot. iMac 5K supports 64GB total memory, Install in pairs (2 modules at a time) for the best performance, iMac 5K comes with 8GB (4GB x 2) in its minimum stock configuration Technology: DDR4 SO-DIMM 260 Pin Density: 2 x 4GB (4096MB) RoHS: Yes Pin Count: 260-pin Op. Temp.: 0C to +85C Data Rate: DDR4-2400 Speed: PC4-19200 CL: 17 Voltage: 1.2V ECC: Non ECC Module Ranks: Single Rank Low Noise 8-Layer PCB Meets and/or Exceeds Apple/Intel Specifications TAP INTO YOUR DIY SPIRIT Adding OWC memory to your Mac is one of the best things you can do to extend the life, and accelerate the performance of your computer. It’s also an upgrade you can easily install yourself. Our library of installation videos guide you through each step in the process.


Product Dimensions: 6.81 x 4.8 x 0.31 inches


Item Weight: 0.811 ounces


Manufacturer: Other World Computing


Item model number: OWC2400DDR4S08P


Is Discontinued By Manufacturer: No


Date First Available: June 8, 2017


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Nov 26

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • NOT COMPATIBLE with stock Apple RAM
Size: 32 GB
Like several others, I found that after installing this OWC Ram, it would not work with the stock Apple RAM modules. They work just fine when installed alone (into the same slots that the original Apple modules were installed in), but as soon as you add the Apple ram into the empty slots, you get nothing but a blank screen. I tried every configuration possible, same result. It would be nice if OWC made this clear, as many people simple want to ADD to the Ram they already have, not replace it outright. Kinda sucks, especially since I chose OWC thinking it was a higher quality product... which it's definitely NOT if you don't give customers accurate information. Get it together. ... show more
Reviewed in the United States on November 10, 2018 by Staci Stephenson

  • OWC 2*16Gb RAM upgade for iMac 27" 5K retina 2017 - it just works
Size: 32 GB
OWC 32GB (2 x 16GB) 2400MHZ DDR4 SO-DIMM PC4-19200 Memory Upgrade For 2017 iMac 27 inch with Retina 5K display I recently bought an iMac 2017 27" 5K retina base model with 8Gb RAM and wanted to add some RAM. After investigating for 32 Gb RAM for iMac 2017 27" from well known brands, I decided to go with OWC. It was a risky process for me because it was an International shipment for me and if something goes wrong returning it would be a hard process and the disappointment would be much higher. The package was scheduled to arrive between 2-12 April 2018 but to my surprise it was delivered to me on March 26th :) I fitted the RAMs in excitement (despite having dealing with hardware for years, I took my time to read and watch OWC and Apple advice first). My process was exactly like this: -Shut down and wait for about 10 mins (I wouldn't but it wouldn't harm I thought). -Placed the iMac on a soft cloth and opened the RAM bay. -Preinstalled 8 Gb RAM was on slots 1 and 3. -Insatlled OWC 16 Gb modules on slots 2 and 4. -Closed the bay, plugged the cables and turned it on. Voila, after 15-20 seconds apple logo was on screen and it booted without no problems. Checking RAM it shows a botal of 40Gb now. Thanks OWC. Wish you had an office in my country or at least I could buy anything from you internationally. After using these RAMs for months, I decided to buy another 32 Gb and upgrade to a total of 64 Gb. Removed the stock 8 Gb and placed the new 32 Gb set. Now working with 64 Gb. :) All went well (bought second set from Newer Galaxy Distribution Company, LLC through Amazon - delivered just on time. Thanks) ... show more
Reviewed in the United States on March 27, 2018 by Cetin Basoz

  • Imac 27" 2017 doesn't turn on with these in. - Then FIXED
Size: 32 GB
UPDATE: After returning the product and getting a replacement - the replacement does work fine. -- Original Review -- Tried installing them in every slot, iMac 27" 2017 would not turn on when installed. Returned and trying again with a replacement on the assumption there was just an issue with this particular set. If the next set doesn't work these should NOT be advertised as being compatible with iMac 27" 2017. ::Crosses fingers:: ... show more
Reviewed in the United States on December 12, 2018 by Jenova Whosawhatsit

  • 2017 i7 27" iMAC 3T RESULTS for 2 x 16GB Ram
Size: 32 GB
I am a long term iMAC user and have used OWC Ram in the past for a 2010 i7 iMAC with great results. Recently I got a 2017 i7 27" iMAC and ordered and installed 2 16GB OWC RAM to the stock apple 8 GB Ram. During first install the iMac would not boot but after switching slot position all was great with a total of 40 GB (OWC and Apple RAM). After a few weeks the iMAC would not boot and working with phone apple support they asked me to bring in my iMac for repairs. At first Apple thought the logic board was bad but then found the OWC ram was not compatible and removed such and the iMAC boots and runs normal for 8 GB RAM. Once home I called OWC tech support and they suggested 90 + % of issues with their RAM was due to non clean contact points. I followed the suggestion for cleaning the contact points and installed the OWC ram in a few different slots with the apple ram. In no case did the iMAC boot with the OWC installed with the Apple RAM. As my return window was in a few days I then decided to return (UPS) the OWC memory for refund. I would love to hear from others that have i7 2017 iMAC that have installed OWC ram and kept the Apple RAM. SAD IT DID NOT WORK LONGER AND A FEW WEEKS AS THE IMPROVED APP LOADING TIME WAS GREAT WITH the extra RAM. ... show more
Reviewed in the United States on November 14, 2018 by Amazon Customer

  • Added RAM and NVMe storage (to replace Fusion drive) for my 2017 iMac i5 3.4GHz
Size: 64GB KIT (4 x 16GB )
I have purchased various OWC Apple Mac related upgrade products over the years and have always been satisfied with both the quality and the price of those purchases. Also upgraded my storage: Running macOS Catalina on a Micron 9300 MAX 6.4TB U.2 SSD via a Highpoint RocketStor 6661A Thunderbolt 3 to PCIe 3.0 X16 Expansion Chassis, and a StarTech.com U.2 to PCIe Adapter - x4 PCIe - For 2.5" U.2 NVMe SSD - SFF-8639 PCIe Adapter - U.2 SSD - PCIe SSD - U.2 drive (PEX4SFF8639). Read/write on this iMac equals 2,200 MB.sec. Most folks would probably due fine with a simple external M.2 NVME enclosure. U.2 is worth considering if a larger (and reliable) boot disk is desired. My iMac is like a whole new computer. An example of where this RAM came in handy was using software to clean-up my very large and previously corrupted photo libraries. Activity Monitor showed the application using all 64GB of RAM. Before the upgrades, my iMac was not capable of properly running what appears to be simple software--my system would stop responding indefinitely (swirling rainbow) with my 1TB Fusion drive and 8GB RAM. ... show more
Reviewed in the United States on September 27, 2020 by --Jeff--

  • Wow! Thank you OWC!!!
Size: 16GB KIT (2 x 8GB)
Apple wants a ridiculous amount of money for RAM when you configure your iMac, plus, you have to deal with a delay in the delivery time so they can 'customize' it. I have installe RAM in older Macs and it was easy but installing this was so simply it blew me away! In less than 10 minutes, I upgraded the RAM and had my iMac up and running again—its that easy! Delivery was fast and the product was packaged very well. ... show more
Reviewed in the United States on June 22, 2017 by Robert M. Sacha Robert M. Sacha

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