Possible Upcoming Mac Pro Reference Discovered in OS X El Capitan

It's been two years since Apple launched its radically redesigned Mac Pro, but the professional-level workstation has not seen any updates since that time despite the availability of upgraded versions of many of the components used in the machine. We may be getting closer to an update, however, as Pike's Universum has discovered a reference to a new Mac code name of "AAPLJ951" within OS X El Capitan.

The identity of the Mac corresponding to that code name is not explicitly revealed in OS X, but Pike points to the similar AAPLJ90 code name for the current Mac Pro as a reason to believe this new machine is a Mac Pro.

aaplj951

The data is identical to that of the late 2015 (iMac17,1 in the same file) so it may as well be a remnant of the new iMac, but the strange thing is that the XHCI data for the late 2015 iMac is also there, which is why I believe that this is not/was not added for the/a new iMac but another Mac.

And like I said earlier in the comments, there are too many USB 3 ports defined to fit on a MacBook (Pro) and Mac Mini. This and the fact that there is already support for newer graphics chips [baked] into El Capitan… is why I think that it was added for a new Mac Pro. I personally sure hope so.

Looking toward possible specs for the next Mac Pro, it seems likely it will run on Xeon-branded Broadwell EP chips and include significantly faster graphics based on AMD's Fury platform, along with faster memory and storage and perhaps Thunderbolt 3 connectivity involving a partial shift to USB-C connectivity.

Related Roundup: Mac Pro
Buyer's Guide: Mac Pro (Neutral)
Related Forum: Mac Pro

Popular Stories

iOS 26

6 New Things Your iPhone Can Do in iOS 26.1

Wednesday October 29, 2025 4:22 am PDT by
Apple is about to drop iOS 26.1, the first major point release since iOS 26 was rolled out in September, and there are at least six notable changes and improvements to look forward to. We've rounded them up below. Apple has already provided developers and public beta testers with the release candidate version of iOS 26.1, which means Apple will likely roll out the update to all compatible...
ios 26 1 slide to stop

iOS 26.1 Brings Back 2007 Feature in New Way

Friday October 31, 2025 1:40 pm PDT by
The upcoming iOS 26.1 update includes a small but helpful change for iPhones, and it could prevent you from running late to something important. Specifically, when an alarm goes off in the Clock app, there is a new "slide to stop" control on the screen for turning off the alarm. On previous iOS 26 versions, there is simply a large "stop" button, which could be accidentally tapped. The new ...
iOS 26

iOS 26.1 Coming Soon: New Features for Your iPhone and Release Date

Monday October 27, 2025 7:55 am PDT by
The upcoming iOS 26.1 update includes a handful of new features and changes for iPhones, including a toggle for changing the appearance of the Liquid Glass design, "slide to stop" for alarms in the Clock app, and more. Below, we outline key details about iOS 26.1. Release Date Given that Apple has yet to seed an iOS 26.1 Release Candidate, which is typically the final beta version, the...
M5 MacBook Pro

Waiting for New Macs? Apple Just Shared Bad News

Friday October 31, 2025 7:32 am PDT by
Apple has just given a strong indication that it will not be releasing any additional new Macs for the remainder of the year. Apple's CFO Kevan Parekh dropped the hint during the company's earnings call on Thursday:On Mac, keep in mind, we expect to face a very difficult compare against the M4 MacBook Pro, Mac mini, and iMac launches in the year-ago quarter.Parekh essentially gave a heads up ...
iPhone 17 Pro Cosmic Orange

8 Reasons to Wait for Next Year's iPhone 18 Pro

Thursday October 30, 2025 4:42 am PDT by
Apple's iPhone development roadmap runs several years into the future and the company is continually working with suppliers on several successive iPhone models at the same time, which is why we often get rumored features months ahead of launch. The iPhone 18 series is no different, and we already have a good idea of what to expect for the iPhone 18 Pro and iPhone 18 Pro Max. One thing worth...
maxresdefault

Apple TV 4K Could Still Launch Before 2025 Ends: All the Rumored Features

Monday October 27, 2025 4:51 pm PDT by
Apple is designing an updated version of the Apple TV 4K, and rumors suggest that it could come out sometime in the next couple of months. We're not expecting a major overhaul with design changes, but even a simple chip upgrade will bring major improvements to Apple's set-top box. Subscribe to the MacRumors YouTube channel for more videos. We've rounded up all the latest Apple TV rumors. ...
ipad mini 7 feature blue

OLED iPad Mini: Release Date, Pricing, and What to Expect

Wednesday October 29, 2025 7:13 am PDT by
Rumors are stoking excitement for the next-generation iPad mini that Apple is reportedly close to launching. So what should we expect from the successor to the iPad mini 7 that Apple released over a year ago? Read on to find out. Processor and Performance Apple is working on a next-generation version of the iPad mini (codename J510/J511) that features the A19 Pro chip, according to...
Coffee Burgundy and Purple iPhone 18 Pro Mock 1

Leaker Outlines Potential New Colors for iPhone 18 Pro

Friday October 31, 2025 8:28 am PDT by
Apple's iPhone 18 Pro models could be available in new rich and warm color option, according to a known leaker. The Weibo user known as "Instant Digital" today suggested that next-year's iPhone 18 Pro models will be available in at least one of the following color options: Coffee, purple, and burgundy. The iPhone XR, iPhone 11, iPhone 12, iPhone 14, and iPhone 14 Pro were all available in ...
apple tv hd

Apple Launched Its Big New Vision for TV 10 Years Ago Today

Thursday October 30, 2025 8:58 am PDT by
Apple launched the Apple TV HD, the Siri Remote, tvOS, and their accompanying App Store a decade ago today, marking a major overhaul of the device. The new vision for the Apple TV was unveiled on September 9, 2015 during Apple's "Hey Siri" event in San Francisco, where CEO Tim Cook introduced the device with the statement, "The future of TV is apps." The announcement represented a major...

Top Rated Comments

Frign Avatar
131 months ago
('http://frign.de/static/tnmp/the_new_mac_pro_1440p.png')
Score: 55 Votes (Like | Disagree)
upthetoffees Avatar
131 months ago
i am more than 100% sure in next few month we will see a revolution in macs, they have been so similar far last few years now its 10th anniversary of mbp and probably we will see amazing new mac pro with reasonable price too
I don't understand why they don't do it. Where is the non mini non pro and non imac option? Where is the pc equivalent that would go into offices and homes? I am not going to buy another imac, not going to buy the mac pro, hell no and the mini is underpowered. The whole mac strategy in 2015 is complete BS. So much so that I started making a pc for my audio stuff and it's just so frustrating. Apple gimps everything by controlling the levels of what is offered for a price, then the upgrade costs x + apple tax. I really hope there is more of a backlash soon, I'm getting sick of this. Can't be the only one.

Lots of people have money for you apple, they love the OS, don't strangle the **** out of your customers.
Score: 17 Votes (Like | Disagree)
funtimeben Avatar
131 months ago
I just really hope they drop the trashcan design for something with a little more expandability. Would love a new Mac, but refuse to buy something I need to plug external hard drives all over to expand.
Score: 13 Votes (Like | Disagree)
bkkcanuck8 Avatar
131 months ago
I just really hope they drop the trashcan design for something with a little more expandability. Would love a new Mac, but refuse to buy something I need to plug external hard drives all over to expand.
The Mac Pro that you keep on pining over is NOT that expandable -- in fact the Mac Pro 2013 is much more expandable. I have a Mac Pro 2008, two graphics cards (5770).... which take up all but the lowest speed PCIe slot (a SATA card in there). All 4 hard drive bays full..... no more expansion possible. With the Mac Pro 2013 it has the two graphics cards in there and up to 36 Thunderbolt devices.... so add a Thunderbolt 4 drive bay (and I have 35 left). Or add a 24 bay one and still have 35 left.....
Score: 13 Votes (Like | Disagree)
bax2003 Avatar
131 months ago
The Mac Pro that you keep on pining over is NOT that expandable -- in fact the Mac Pro 2013 is much more expandable. I have a Mac Pro 2008, two graphics cards (5770).... which take up all but the lowest speed PCIe slot (a SATA card in there). All 4 hard drive bays full..... no more expansion possible. With the Mac Pro 2013 it has the two graphics cards in there and up to 36 Thunderbolt devices.... so add a Thunderbolt 4 drive bay (and I have 35 left). Or add a 24 bay one and still have 35 left.....
Or, instead of all that upgrades for MP 2013, for the same money, you buy a house.
Score: 12 Votes (Like | Disagree)
ActionableMango Avatar
131 months ago
The Mac Pro that you keep on pining over is NOT that expandable -- in fact the Mac Pro 2013 is much more expandable.
That's an awfully misleading statement. The new MP is "more expandable" in your very cherry-picked scenario of Thunderbolt-attached devices. In almost every other way it is less expandable. Fewer CPU sockets, fewer memory sockets, no optical bays, no HDD bays, no PCIe slots, and extremely restrictive GPU choices. And if the new MP had simply kept the same physical design as the classic MP, it would have had all of those advantages plus Thunderbolt attached devices.

There are several advantages to the new MP design. It is smaller in size, uses less power, makes less noise, and has fewer fans that can fail.

But "much more expandable"? No, not without some narrowly defined view of expansion, and even that falls apart compared to what a 2013 MP could have been if they hadn't changed the basic physical design.
Score: 11 Votes (Like | Disagree)