Third-Party RAM for 27-inch iMac Still Far More Affordable Than Apple's Checkout Upgrade Options

Apple yesterday announced a new 27-inch iMac with faster 10th-generation Intel Core processor options, next-generation AMD graphics, and up to a whopping 128GB of RAM.


To max out the RAM at checkout, Apple charges an additional $2,600, which is like buying another whole ‌iMac‌. Fortunately, the memory in the 27-inch ‌iMac‌ is user-replaceable thanks to the easily-accessible memory backdoor slot, and there are far more affordable options available from third parties.

OWC offers 128GB of DDR4 PC4-21300 RAM that's compatible with the 27-inch ‌iMac‌. The total cost on Amazon is $599.99, or $2,000 less than Apple charges its customers. These are the OWC memory upgrade kits available, compared to the prices that you'd pay when purchasing an ‌iMac‌ from Apple:

Apple provides instructions for users wanting to install memory in an ‌iMac‌. Note that the RAM in the 21.5-inch ‌iMac‌ models, which were not updated yesterday other than a change to the base storage configuration, is not user-accessible.

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

Related Roundup: iMac
Tag: OWC
Buyer's Guide: iMac (Caution)

Top Rated Comments

(View all)
Avatar
7 weeks ago


Do we know why they are so ridiculous, aside from the fact they are Apple?

The modules are installed by Swedish virgins during the full moon. It's really hard to get clear sky and full moon in Sweden. Even harder to find virgins.
Score: 39 Votes (Like | Disagree)
Avatar
7 weeks ago


I bet user upgradable ram is gone in arm iMacs.

Tim Cook is heavily innovating in new soldering techniques and glue chemicals.
Score: 38 Votes (Like | Disagree)
Avatar
7 weeks ago
I bet user upgradable ram is gone in arm iMacs.
Score: 32 Votes (Like | Disagree)
Avatar
7 weeks ago
This has always been the case.

It would be a massive shame if they take away the ability to upgrade the RAM yourself in future iMac re-designs.
? ('https://emojipedia.org/grimacing-face/')
Score: 19 Votes (Like | Disagree)
Avatar
7 weeks ago
Do we know why they are so ridiculous, aside from the fact they are Apple?
Score: 19 Votes (Like | Disagree)
Avatar
7 weeks ago
No surprises there.
Score: 16 Votes (Like | Disagree)

Top Stories

iPhone 12 Lineup Rumored to Be Named 'iPhone 12 mini,' 'iPhone 12,' 'iPhone 12 Pro,' and 'iPhone 12 Pro Max'

Monday September 21, 2020 5:24 am PDT by
Leaker known as "L0vetodream" has today shared the alleged naming for the upcoming iPhone 12 lineup on Twitter. The tweet proposes that the upcoming iPhone 12 models will be titled "iPhone 12 mini," "iPhone 12," "iPhone 12 Pro," and "iPhone 12 Pro Max." The names likely correspond to the three expected sizes of iPhone 12, with the 5.4-inch model being the iPhone 12 mini, the 6.7-inch model ...

iOS 14 Widgets Offer iPhone Users Creative Home Screen Ideas

Sunday September 20, 2020 8:43 pm PDT by
Updated on September 22nd with hands on video. In iOS 14, Apple introduced ‌the concept of Home Screen‌ widgets, which provide information from apps at a glance. Widgets can be pinned to the Home Screen in various spots and sizes, allowing for many different layouts. Despite the relative lack of...

Hands-On With iOS 14 Widgets, Custom Icons, and Home Screen Setup

Tuesday September 22, 2020 3:25 pm PDT by
Apple with iOS 14 introduced widgets on the Home Screen, leading to unprecedented levels of customization for the iPhone. Combined with Shortcuts that let you change an app's icon, iOS 14 lets you create a whole new look for your Home Screen. Subscribe to the MacRumors YouTube channel for more videos. We've been following along with some of the creative alternative Home Screen designs that M...

PSA: New Apple Watch Owners Have to Return Entire Device for Ill-Fitting Solo Loop or Braided Solo Loop

Monday September 21, 2020 3:26 pm PDT by
With the Apple Watch Series 6, Apple introduced two new band options, the Solo Loop and the Braided Solo Loop. These new bands are unique because they have no clasps, buckles, or other fasteners, and instead use a stretch design to allow them to pull onto the wrist over the hand. Because these bands are not adjustable, Apple sells each one in nine different sizes to make sure each person...

Apple's iPhone 12 Event Could Happen on October 13 Based on Rumors From Mobile Operators

Wednesday September 23, 2020 11:51 am PDT by
Apple's upcoming iPhone-centric event could perhaps be held on Tuesday, October 13, according to information shared with MacRumors by an employee at a UK cellular carrier. There's no way for us to confirm the dates at this point in time nor are we sure on the credibility of the source, but even without a rumor, Tuesday, October 13 is a good guess based on Apple's historic launch timelines, ...

New Images Leak of iPhone 12 Braided USB-C to Lightning Cable

Thursday September 24, 2020 2:37 am PDT by
Rumors suggest Apple's upcoming iPhone 12 models will ship with a new Lightning to USB-C cable that includes a braided fabric design. Images of the purported cables were leaked in July, and today leaker Mr White has shared new images that give us a closer look at what we might get included in the iPhone 12 box. The photos show a USB-C to Lightning cable with a clearly braided design rather...

Interest in iOS 14 Home Screen Ideas Helps Pinterest Break Daily Download Record

Wednesday September 23, 2020 4:37 am PDT by
Apple's introduction of widgets on the Home Screen in iOS 14 has driven a surge in interest among users looking to customize their iPhone, and that has reportedly had a knock-on effect for Pinterest, whose iOS app has seen record downloads as users flock to its content seeking design inspiration. As reported by TechCrunch, App Store intelligence firm Apptopia was first to note the impact of ...

Apple Releases First Public Betas of iOS 14.2 and iPadOS 14.2 With New Shazam Control Center Options

Monday September 21, 2020 10:34 am PDT by
Apple today seeded the first public betas of upcoming iOS 14.2 and iPadOS 14.2 updates to its public beta testing group, a few days after seeding the first betas to developers and a little less than a week after releasing the iOS 14 and iPadOS 14 updates. Public beta testers who have signed up for Apple's beta testing program can download the iOS and iPadOS‌ 14.2 updates over the air after ...

Apple Emphasizes That Solo Loop May Increase in Length Over Time, Updates Sizing Guide With More Specific Instructions

Wednesday September 23, 2020 8:26 am PDT by
Apple on Tuesday updated one of its support documents to emphasize that the new silicone rubber Solo Loop for the Apple Watch may increase in length over time, as mentioned in fine print at the bottom of the Solo Loop product page. Apple has also updated its printable Solo Loop sizing guide with more specific instructions, as noted by 9to5Mac's Michael Steeber. The guide now advises users to ...

Microsoft Announces Outlook for Mac Redesign, Improvements to iOS and watchOS Apps

Tuesday September 22, 2020 8:56 am PDT by
Microsoft has today announced plans to bring a new design to its Outlook for Mac app along with several other improvements and features for Outlook on iOS and watchOS. In preparation for the public release of macOS Big Sur, Microsoft has been testing a new design for Outlook on Mac. The design includes Microsoft's Fluent icons and several design cues from Big Sur such as rounded corners....