New 27-Inch iMac Supports Up to 64GB of RAM, OWC Offering Upgrade Kits - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
Skip to Content

New 27-Inch iMac Supports Up to 64GB of RAM, OWC Offering Upgrade Kits

Apple's line of newly updated 5K Retina 27-inch iMacs with Skylake will support up to 64GB of RAM, an upgrade from the previous-generation 27-inch Retina iMacs that would only support a maximum of 32GB of RAM. According to OWC, The current 27-inch Retina iMac includes four memory slots that support up to 16GB of memory per slot for a total of 64GB.

newimac64gbram

Image via OWC

Build-to-order options for the 27-inch Retina iMacs only allow it to be purchased from Apple with a maximum of 32GB RAM, but OWC will offer 16GB modules in 48GB and 64GB configurations for the new iMac. OWC plans to start selling its new 48 and 64GB kits tomorrow, and pricing is as follows:

- Single 16GB module - $329.99

- 32GB Kit using 16GB x 2 Modules - $599.00

- 48GB Kit with 16GB x 2 + 8GB x 2 - $729.00

- 64GB Kit with 16GB x 4 - $1195.00

The new 27-inch iMacs were announced this morning and are available from Apple retail stores and Apple's online store. Pricing for the machines starts at $1,799 for a 3.2GHz quad-core processor, 8GB RAM, 1TB hard drive, and an AMD Radeon R9 M380 graphics card.

Update: OWC has torn down the new 21.5-inch 4K Retina iMac and has learned that the memory is soldered in, which means it can't be upgraded. Customers purchasing a 21.5-inch Retina iMac should get the maximum amount of memory they can afford at the time of purchase as there will be no third-party upgrade options. The maximum amount of RAM for the 21.5-inch iMac models is 16GB.

Related Roundup: iMac
Buyer's Guide: iMac (Buy Now)
Related Forum: iMac

Popular Stories

Black Apple Event Logo

Apple Now Inviting Media to October 28 'Launch Experience'

Thursday October 15, 2026 4:13 am PDT by
Apple has begun inviting selected members of the media to a product launch experience in Los Angeles on Wednesday, October 28, according to Bloomberg's Mark Gurman. In a post on X, Gurman described the gathering as an "all-day product launch experience" for touchscreen MacBooks, a new iPad mini, and Macs equipped with M6 chips. Gurman previously reported that Apple would introduce the...
iPad mini 7 Review Thumb 1 sans text

Apple Expected to Release New Products on Next Four Fridays

Sunday October 18, 2026 11:01 am PDT by
Apple likely plans to release MacBook Pro models with OLED displays, 14-inch MacBook Pro and iMac models with M6 chips, and/or an iPad mini 8 with an OLED display on Friday, November 6, according to Bloomberg's Mark Gurman. The devices are expected to be announced on Tuesday, October 27 or Wednesday, October 28. If this timeframe proves to be accurate, then Apple will be releasing new...
M5 MacBook Pro

Apple Plans Two-Day Event to Showcase Trio of New Macs and iPad Mini

Monday October 12, 2026 9:15 am PDT by
Apple is planning to invite content creators to a two-day product showcase in Los Angeles on October 27 and October 28, according to Bloomberg's Mark Gurman. Do not expect a traditional Apple Event with a live-streamed video on either of those days, as Gurman said that these will be "experiences" for content creators, similar to one that Apple is holding in New York this Tuesday, October 13. ...

Top Rated Comments

landroverz7 Avatar
145 months ago
Most users here don't need 64GB Ram, but what they do need is 64GB storage standard on iOS devices :)
Score: 35 Votes (Like | Disagree)
JXShine Avatar
145 months ago
I think the 5400rpm HDD is the part that needs upgrading.
Score: 27 Votes (Like | Disagree)
AustinIllini Avatar
145 months ago
4000 instances of Safari will be snappier
Score: 25 Votes (Like | Disagree)
Chrjy Avatar
145 months ago
How times have moved on!

MacRumors content image
Score: 19 Votes (Like | Disagree)
uid15 Avatar
145 months ago

This is great news until the next version when Apple decides it's too thick and the RAM needs to be built-in to get it just a little thinner!
It always amuses me how people seem to think the iMac is "thin" - yeah - at the EXTREMITIES, but then so am I :D
Score: 18 Votes (Like | Disagree)
uid15 Avatar
145 months ago
HUGE RAM

MacRumors content image
Score: 13 Votes (Like | Disagree)
Latest Stories
Webex Gets iPhone Duo Support
Webex Gets iPhone Duo Support
7 minutes ago
Meta's Muse AI Agent Comes to Apple Watch
Meta's Muse AI Agent Comes to Apple Watch
43 minutes ago
Anker Launches Eufy Security Cam With Auto-Tracking Light
Anker Launches Eufy Security Cam With Auto-Tracking Light
51 minutes ago
macOS 27.2.1 Fixes eMudhra Certificate Flaw in Command-Line Tools
macOS 27.2.1 Fixes eMudhra Certificate Flaw in Command-Line Tools
2 hours ago
Anthropic Launches Claude Fable 5.2 and Mythos 5.2
Anthropic Launches Claude Fable 5.2 and Mythos 5.2
3 hours ago
Apple Releases macOS Golden Gate 27.2.1
Apple Releases macOS Golden Gate 27.2.1
4 hours ago
Apple Releases iOS 27.2.1 With Bug Fixes
Apple Releases iOS 27.2.1 With Bug Fixes
4 hours ago
Apple Releases watchOS 27.2.1 and visionOS 27.2.1 With Security Fixes
Apple Releases watchOS 27.2.1 and visionOS 27.2.1 With Security Fixes
5 hours ago
Apple Watch Ultra 4 Gets $99 Amazon Discounts, Starting at $699.99
Apple Watch Ultra 4 Gets $99 Amazon Discounts, Starting at $699.99
5 hours ago
Apple Pay Ad Features Martial Arts Convenience Store Food Fight
Apple Pay Ad Features Martial Arts Convenience Store Food Fight
5 hours ago
Apple Continues to Say Some AI Features Will Have Fees for Extra Usage
Apple Continues to Say Some AI Features Will Have Fees for Extra Usage
5 hours ago
Apple Announces Türkiye Expansion Plans as Tim Cook Visits
Apple Announces Türkiye Expansion Plans as Tim Cook Visits
6 hours ago
Singapore Saved Apple $2.7 Billion in Taxes This Year
Singapore Saved Apple $2.7 Billion in Taxes This Year
6 hours ago
Apple Music's 2026 Artist of the Year is Olivia Dean
Apple Music's 2026 Artist of the Year is Olivia Dean
7 hours ago
This Could Be Your Last Chance to Pre-Order the HomeView at a Discount
This Could Be Your Last Chance to Pre-Order the HomeView at a Discount
7 hours ago
Some HomePod Mini 2 Buyers Returning Units Over Mac Speaker Issues
Some HomePod Mini 2 Buyers Returning Units Over Mac Speaker Issues
7 hours ago
MacBook Pro With PROLED XDR Display: Details You Might Have Missed
MacBook Pro With PROLED XDR Display: Details You Might Have Missed
7 hours ago
Satechi Offers MacRumors Readers 30% Off Select Accessories in Early Black Friday Sale
Satechi Offers MacRumors Readers 30% Off Select Accessories in Early Black Friday Sale
8 hours ago
Leaker Envisions a Shorter iPhone With a New iOS Layout
Leaker Envisions a Shorter iPhone With a New iOS Layout
8 hours ago
Apple to Give You More Control Over When Your Mac Passwords Lock
Apple to Give You More Control Over When Your Mac Passwords Lock
9 hours ago
Siri Is Getting a Better Memory
Siri Is Getting a Better Memory
9 hours ago
iPhone 18e Could Feature Bigger Display and Battery
iPhone 18e Could Feature Bigger Display and Battery
10 hours ago
Apple's Siri Boss May Leave - Here's Who Could Take Over
Apple's Siri Boss May Leave - Here's Who Could Take Over
10 hours ago
Apple Launching Two More New Products This Friday
Apple Launching Two More New Products This Friday
10 hours ago
Apple Store Subscription Sign-Up Controversy Exposed
Apple Store Subscription Sign-Up Controversy Exposed
19 hours ago
Siri AI Rumored to Become 'More Like an Agent' as Early as Next Year
Siri AI Rumored to Become 'More Like an Agent' as Early as Next Year
1 day ago
Apple Taking New Approach to Developing iOS 28 and macOS 28
Apple Taking New Approach to Developing iOS 28 and macOS 28
1 day ago
Early Apple Black Friday Deals on Apple Watch, MacBook Air, and More
Early Apple Black Friday Deals on Apple Watch, MacBook Air, and More
2 days ago
'Backglow' Lets You Customize New MacBook Pro's Glowing Apple Logo
'Backglow' Lets You Customize New MacBook Pro's Glowing Apple Logo
2 days ago
Top Stories: Apple Product Launches, iOS 27.3 Beta, and More
Top Stories: Apple Product Launches, iOS 27.3 Beta, and More
2 days ago