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

imac new purple

Major iMac Upgrade Coming in 2029

Tuesday April 28, 2026 5:46 am PDT by
Apple is planning a major upgrade to the iMac in 2029, adopting an OLED panel for the first time, according to ZDNet Korea. Apple has apparently asked Samsung Display, LG Display, and other suppliers to produce 24-inch OLED panel samples on their mass-production lines, targeting 600 nits of brightness and around 218 pixels-per-inch (PPI). The current iMac's 24-inch LCD offers 500 nits at the ...
Four iPhone 18 Pro Colors Mock Feature

iPhone 18 Pro Launching Later This Year With These 10 New Features

Tuesday May 26, 2026 6:32 am PDT by
While the iPhone 18 Pro and iPhone 18 Pro Max are not launching until September, 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 will be moved under the...
Apple Watch Ultra 2 Black Titanium

watchOS 27 Will Add These New Features to Your Apple Watch

Sunday May 24, 2026 11:53 am PDT by
Apple will unveil watchOS 27 during its WWDC 2026 keynote on Monday, June 8, and a handful of new features have been rumored already. The first developer beta of watchOS 27 should be available immediately following the keynote, and a public beta typically follows in July. The update should be released to all users with a compatible Apple Watch model in September. Below, we recap watchOS...

Top Rated Comments

21 months ago
That metal green is stunning
Score: 12 Votes (Like | Disagree)
adamw Avatar
21 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)
21 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
21 months ago
I assume it still can't be used as an external display?
Score: 3 Votes (Like | Disagree)
fwmireault Avatar
21 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)
21 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)