Apple Executive Discusses New Mac Pro's Lack of Graphics Card Support

While the new Mac Pro features six available PCI Express expansion slots for audio, video capture, storage, networking, and more, the desktop tower is no longer compatible with graphics cards. Instead, graphics processing is handled entirely by the M2 chip, which includes up to a 76-core GPU that can access up to 192GB of unified memory.

Mac Pro Feature Teal
Apple's hardware engineering chief John Ternus briefly touched on the matter in an interview with Daring Fireball's John Gruber last week, explaining that expandable GPU support for Apple silicon is not something that the company has pursued.

"Fundamentally, we've built our architecture around this shared memory model and that optimization, and so it's not entirely clear to me how you'd bring in another GPU and do so in a way that is optimized for our systems," Ternus told Gruber. "It hasn't been a direction that we wanted to pursue."

Another limitation of the new Mac Pro compared to the Intel-based model is the lack of user-upgradeable RAM, given the unified memory is soldered to the M2 Ultra chip. In addition, the Intel-based model could be configured with up to 1.5TB of RAM, which is 8× as much as the 192GB maximum for the Apple silicon model.

There are certainly advantages to the new Mac Pro and its unified architecture. For example, Apple says the new Mac Pro is up to 3× faster than the Intel-based model for certain real-world workflows like video transcoding and 3D simulations. For video processing, Apple says the new Mac Pro's performance is equivalent to an Intel-based model with seven Afterburner cards. For overall CPU performance, the new Mac Pro's $6,999 base model is up to 2× faster than a 28-core Intel-based Mac Pro, which started at $12,999.

The new Mac Pro is available to order now, and launches in stores on Tuesday. Customers who don't need PCI Express expansion should consider the Mac Studio, which can be configured with the M2 Ultra chip for $3,000 less than the Mac Pro.

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Top Rated Comments

Rob__Mac Avatar
1 day ago at 10:43 am

I still think the new Mac Pro is still an overpriced machine.

Apple needs to come out with Mac Pro Mini.

It’s called Mac Studio.
Score: 67 Votes (Like | Disagree)
blazerunner Avatar
1 day ago at 10:40 am
How do you not plan for the most common device used in PCIe slots? WTF is wrong with Apple?
Score: 65 Votes (Like | Disagree)
redbeard331 Avatar
1 day ago at 10:33 am
Seems like a weird decision, at least it can still grate thicc mozzarella shreds.
Score: 43 Votes (Like | Disagree)
TheYayAreaLiving ?️ Avatar
1 day ago at 10:38 am
I still think the new Mac Pro is still an overpriced machine.

Apple needs to come out with Mac Pro Mini.

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Score: 43 Votes (Like | Disagree)
sunapple Avatar
1 day ago at 11:01 am
Apple: we know exactly what our Pro costumers want.

Pro customers:

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Score: 36 Votes (Like | Disagree)
tomnavratil Avatar
1 day ago at 10:34 am
Due to the lack of external GPU support as well as very limited RAM, this makes it quite a niche machine at that price point. There are a few use cases where this device makes sense over the new Studio but for people who need RAM-heavy or GPU-heavy operations locally, the older Intel version might be a better option. However if they keep the same form factor, maybe a proper rebuild will occur in a year or two, we shall see.
Score: 33 Votes (Like | Disagree)