Apple on Tuesday unveiled new iMac models that support up to 64GB RAM. Apple charges high prices for RAM upgrades, though, but luckily, there are do-it-yourself options for replacing an ‌iMac‌'s memory after purchase.

Other World Computing this week announced memory upgrade kits designed for the 2019 27-inch 5K iMacs, which let you upgrade your available RAM more affordably.

27inchimac 1
There are three RAM kits available depending on your needs:

- 16GB Kit (8 GB x 2) OWC2666DDR4S16P - $118.88

- 32GB Kit (16GB x 2) OWC2666DDR4S32P - $229.88

- 64GB Kit (16GB x 4) OWC2666DDR4S64S - $449.99

OWC's RAM kits let you save 40 to 60 percent over Apple's upgrade pricing, and there is an option to trade in the existing RAM in your machine to get a discount.

OWC says that it is testing 128GB of memory in the 27-inch ‌iMac‌ models and will confirm whether or not the machine supports it in the near future. So far, the 27-inch ‌iMac‌ has been able to see 128GB of memory, which seems promising for even further RAM upgrades. OWC offers a lifetime limited warranty for its memory kits, along with a 30 day money back guarantee.

Note: MacRumors is an affiliate partner with OWC. When you click a link and make a purchase, we may receive a small payment, which helps us keep the site running.

Tag: OWC

Top Rated Comments

tevion5 Avatar
74 months ago
Can't recommend OWC enough. Just got a 256GB SSD upgrade for my aging Power Mac G5 Quad. Timely delivery and good prices. Their continued support for older Macs especially is fantastic.
Score: 7 Votes (Like | Disagree)
pavelbure Avatar
74 months ago
As tempting as it may be to save a few bucks, keep your old ram. You never know when you may have to get your iMac repaired or replaced.
Score: 6 Votes (Like | Disagree)
RyanXM Avatar
74 months ago
As tempting as it may be to save a few bucks, keep your old ram. You never know when you may have to get your iMac repaired or replaced.
Replacing your RAM with third party RAM DOES NOT, I repeat DOES NOT, void your warranty or AppleCare+. If an employee at a store tells you this, they are flat out LYING. I know this as I previously worked at an Apple Store. If they find that your RAM is causing an issue, their Family Room Team ie. Genius Bar, should have test RAM (Known Good) to ensure that all other components are functioning.
Score: 6 Votes (Like | Disagree)
MauiPa Avatar
74 months ago
I feel like the RAM in the 2019 model is literally interchangeable with the RAM in the 2017 model. Literally the only change in these 2019 iMacs is a new processor and a new GPU option. iFixIt, prove me wrong.
if you read a spec sheet, you don't need ifixit to tear it down. The spec for the 2017 27 iMac is

Technology: DDR4 SO-DIMM 260 Pin
Density: 4 x 16GB (16384MB)
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

while the 2019 iMac is \
Technology: DDR4 SO-DIMM 260 Pin
Density: 4 x 16GB (16384MB)
RoHS: Yes
Pin Count: 260-pin
Op. Temp.: 0C to +85C
Data Rate: DDR4-2666
Speed: PC4-21300
Voltage: 1.2V

This is from OWC. Will it work? Hey its different, the 2017 is slower, beyond that, ask google
Score: 3 Votes (Like | Disagree)
B4U Avatar
74 months ago
Replacing your RAM with third party RAM DOES NOT, I repeat DOES NOT, void your warranty or AppleCare+. If an employee at a store tells you this, they are flat out LYING. I know this as I previously worked at an Apple Store. If they find that your RAM is causing an issue, their Family Room Team ie. Genius Bar, should have test RAM (Known Good) to ensure that all other components are functioning.
To add to the point, I have an out of warranty iMac with the OWC RAM and needed a repair. The genius bar guys took a look and still performed all the necessary repair with those RAM in place.
Score: 2 Votes (Like | Disagree)
Guyp16 Avatar
74 months ago
Replacing your RAM with third party RAM DOES NOT, I repeat DOES NOT, void your warranty or AppleCare+. If an employee at a store tells you this, they are flat out LYING. I know this as I previously worked at an Apple Store. If they find that your RAM is causing an issue, their Family Room Team ie. Genius Bar, should have test RAM (Known Good) to ensure that all other components are functioning.
I’m ex Apple too and can confirm RyanXM’s points.
Score: 2 Votes (Like | Disagree)

Popular Stories

iPhone SE 4 Thumb 1

iPhone SE 4 With Apple's Own 5G Modem 'Confirmed' to Launch in March

Tuesday November 19, 2024 12:12 pm PST by
Barclays analyst Tom O'Malley and his colleagues recently traveled to Asia to meet with various electronics manufacturers and suppliers. In a research note this week, outlining key takeaways from the trip, the analysts said they have "confirmed" that a fourth-generation iPhone SE with an Apple-designed 5G modem is slated to launch towards the end of the first quarter next year. In line with previo...
airtag purple

AirTag 2 Rumored to Launch Next Year With These New Features

Sunday November 17, 2024 5:18 am PST by
Apple released the AirTag in April 2021, so it is now three over and a half years old. While the AirTag has not received any hardware updates since then, a new version of the item tracking accessory is rumored to be in development. Below, we recap rumors about a second-generation AirTag. Timing Apple is aiming to release a new AirTag in mid-2025, according to Bloomberg's Mark Gurman....
Magic Mouse Next to Keyboard

No, Apple CEO Tim Cook Didn't Say He Prefers Logitech's MX Master 3 Over the Magic Mouse

Sunday November 17, 2024 3:03 pm PST by
While the Logitech MX Master 3 is a terrific mouse for the Mac, reports claiming that Apple CEO Tim Cook prefers that mouse over the Magic Mouse are false. The Wall Street Journal last month published an interview with Cook, in which he said he uses every Apple product every day. Soon after, The Verge's Wes Davis attempted to replicate using every Apple product in a single day. During that...
Generic iOS 18 Feature Real Mock

Apple Releases iOS 18.1.1 and iPadOS 18.1.1 With Security Fixes

Tuesday November 19, 2024 10:10 am PST by
Apple today released iOS 18.1.1 and iPadOS 18.1.1, minor updates to the iOS 18 and iPadOS 18 operating systems that debuted earlier in September. iOS 18.1.1 and iPadOS 18.1.1 come three weeks after the launch of iOS 18.1. The new software can be downloaded on eligible iPhones and iPads over-the-air by going to Settings > General > Software Update. Apple has also released iOS 17.7.2 for...
at t turbo indicator iphone 16 pro max v0 8hrh7w5f3w1e1

AT&T Turbo Indicator Showing Up in iPhone Status Bar for Subscribers

Wednesday November 20, 2024 3:42 am PST by
AT&T has begun displaying "Turbo" in the iPhone carrier label for customers subscribed to its premium network prioritization service, according to reports on Reddit. The new indicator seems to have started appearing after users updated to iOS 18.1.1, but that could be just coincidence. Image credit: Reddit user No_Highlight7476 The Turbo feature provides enhanced network performance through ...
iPhone 17 Slim Feature Single Camera 1 Redux

'iPhone 17 Air' Rumored to Surpass iPhone 6 as Thinnest iPhone Ever

Monday November 18, 2024 1:07 pm PST by
In a research note with Hong Kong-based investment bank Haitong today, obtained by MacRumors, Apple analyst Jeff Pu said he agrees with a recent rumor claiming that the so-called "iPhone 17 Air" will be around 6mm thick. "We agreed with the recent chatter of an 6mm thickness ultra-slim design of the iPhone 17 Slim model," he wrote. If that measurement proves to be accurate, there would be ...
bug security vulnerability issue fix larry

Make Sure to Update: iOS 18.1.1 and macOS Sequoia 15.1.1 Fix Actively Exploited Vulnerabilities

Tuesday November 19, 2024 10:52 am PST by
The iOS 18.1.1, iPadOS 18.1.1, and macOS Sequoia 15.1.1 updates that Apple released today address JavaScriptCore and WebKit vulnerabilities that Apple says have been actively exploited on some devices. With the JavaScriptCore vulnerability, processing maliciously crafted web content could lead to arbitrary code execution. The WebKit vulnerability had the same issue with maliciously crafted...