Higher-End iMac's Ports Are All Thunderbolt 4 - MacRumors
Skip to Content

Higher-End iMac's Ports Are All Thunderbolt 4

Apple today released new iMac models, and while there are few external changes with the exception of some color tweaks, Apple made several internal updates to the machine. The inclusion of the next-generation M4 chip is the biggest update, but the ports have also seen improvement.

imac thunderbolt 4 ports
For the M4 ‌iMac‌ models with 10-core CPU and 10-core GPU, all four of the USB-C ports support Thunderbolt 4 transfer speeds of up to 40Gb/s. The prior-generation M3 ‌iMac‌ with four ports had two Thunderbolt 3 ports and two USB-3 ports.

The 8-core CPU and 8-core GPU models only have two ports, but both of those are Thunderbolt 4. All of the USB-C/Thunderbolt 4 ports also support USB 4 and USB 3.1 Gen 2.

Pricing on the ‌iMac‌ starts at $1,299 for the 8-core CPU/GPU version, while the 10-core CPU/GPU models with four ports are priced starting at $1,499. Apple is accepting pre-orders for the new M4 ‌iMac‌ models as of today.

Related Roundup: iMac
Buyer's Guide: iMac (Don't Buy)
Related Forum: iMac

Popular Stories

iPhone 18 Pro Deep Red Feature

iPhone 18 Pro Launching Later This Year With These 12 New Features

Wednesday March 18, 2026 7:39 am PDT by
While the iPhone 18 Pro and iPhone 18 Pro Max are not expected to launch for another six months or so, there are already plenty of rumors about the devices. It was initially reported that the iPhone 18 Pro models would have fully under-screen Face ID, with only a front camera visible in the top-left corner of the screen. However, the latest rumors indicate that only one Face ID component...
Apple Logo Sketch Feature

Apple Has Now Unveiled Eight New Products This Month

Tuesday March 17, 2026 9:25 am PDT by
Apple has unveiled a whopping eight new products so far this March, including an iPhone 17e, iPad Air models with the M4 chip, MacBook Air models with the M5 chip, MacBook Pro models with M5 Pro and M5 Max chips, an updated Studio Display, a higher-end Studio Display XDR, and now the AirPods Max 2 this week. iPhone 17e features the same overall design as the iPhone 16e, but it gains Apple's...
ios 26 4 yellow

Here Are Apple's Release Notes for iOS 26.4

Wednesday March 18, 2026 11:56 am PDT by
Apple provided developers and public beta testers with the release candidate versions of iOS 26.4 and iPadOS 26.4, which means we're going to see a public launch as soon as next week. The RC versions of the software include Apple's official release notes, giving us final details on what's included in the update. Apple Music - Playlist Playground (beta) generates a playlist from your...

Top Rated Comments

18 months ago
That metal green is stunning
Score: 12 Votes (Like | Disagree)
adamw Avatar
18 months ago
Are all 4 Thunderbolt 4 Ports on the 10 Core M4 iMac model sharing any Thunderbolt channels, or do each of the Thunderbolt 4 ports have its own (non-shared, full speed) Thunderbolt 4 data channel for the full speed data transfer that Thunderbolt 4 allows (40 Gbps)?

Also when do you think we will see full speed (80 Gbps) Thunderbolt 5 port support on Mac models (M5, M6, or M7)?
Score: 4 Votes (Like | Disagree)
18 months ago
slightly off-topic to the iMac announcement itself, but are we expecting one new mac per day? something else later today?

they said "starting monday morning" but no further information about announcement timing
Score: 3 Votes (Like | Disagree)
topdownjimmy Avatar
18 months ago
I assume it still can't be used as an external display?
Score: 3 Votes (Like | Disagree)
fwmireault Avatar
18 months ago

ah, an exciting week definitely suggests nothing else today
I've noticed at the end of the keynote, Ternus said: Join us tomorrow morning for another exciting announcement
Score: 2 Votes (Like | Disagree)
18 months ago

The 8-core CPU and 8-core GPU models only have two ports, but both of those are Thunderbolt 4.
@jclo

The 8-core models don’t have Thunderbolt 4 ports. They have Thunderbolt / USB 4 ports that support Thunderbolt 4.

Thunderbolt 4 certification requires support for two external displays.
Score: 2 Votes (Like | Disagree)