iMac With 10-Core M4 Chip Supports 8K Display at 60Hz [Updated]
Update: Hours after this story was published, Apple updated the tech specs for the new iMac to indicate that configurations with the 10-core M4 chip support one external display with up to 8K resolution at 60Hz, not 120Hz. It appears that the original 8K at 120Hz specification in Apple's tech specs was an error. Apple still mentions 8K at 120Hz on its international websites, but those will likely be corrected soon as well.
Original story follows.
When configured with a 10-core M4 chip, the new iMac announced today supports up to an 8K external display at 120Hz, or up to two 6K displays at 60Hz each. The impressive feat was noted by Vadim Yuryev, co-host of the YouTube channel Max Tech.

This means the latest iMac is the first-ever Mac to support an 8K display at 120Hz, beating out higher-end models like the MacBook Pro, Mac Studio, and Mac Pro. Apple is expected to announce new MacBook Pro models with M4 Pro and M4 Max chips as early as tomorrow, however, so support for an 8K display at 120Hz could be expanded soon.
Apple doesn't even offer an 8K display with a 120Hz refresh rate — at least not yet. Apple's higher-end Pro Display XDR monitor has a 6K resolution at 60Hz, while its lower-end Studio Display monitor has a 5K resolution at 60Hz.
Does the iMac's external display support hint at future 120Hz versions of the Pro Display XDR or Studio Display? There are no concrete rumors yet.
The previous iMac with the M3 chip supports one external display at up to 6K/60Hz, and this remains true for the latest base model with the 8-core M4 chip.
For more details about the new iMac, read our earlier coverage of Apple's announcement.
In the U.S., pricing for the iMac with a 10-core M4 chip starts at $1,499.
Popular Stories
Apple's iPhone 17 series is expected to debut in September 2025. This release follows Apple's recent trend of introducing new iPhone models annually in the fall.
To unveil the iPhone 17, iPhone 17 Air, iPhone 17 Pro, and iPhone 17 Pro Max, Apple is expected to hold its annual iPhone announcement event during the week of September 8, 2025, with September 9 or 10 emerging as the most likely...
Apple's iPhone 17 Pro and iPhone 17 Pro Max should launch in late September, and there are plenty of rumors about the devices.
Below, we recap key changes rumored for the iPhone 17 Pro models, as of July 2025:Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone 16 Pro models have a titanium frame, and the iPhone X through iPhone 14...
Apple's upcoming iPhone 17 Pro models will have several new camera-related features, according to an anonymous tipster who contacted MacRumors today.
The tipster claimed to be familiar with an iPhone 17 Pro commercial that is allegedly being produced by a film company that has publicly listed Apple as one of its clients. MacRumors has not independently confirmed any of the information shared ...
The long wait for an Apple Watch Ultra 3 is nearly over, and a handful of new features and changes have been rumored for the device.
Below, we recap what to expect from the Apple Watch Ultra 3:Satellite connectivity for sending and receiving text messages when Wi-Fi and cellular coverage is unavailable
5G support, up from LTE on the Apple Watch Ultra 2
Likely a wide-angle OLED display that ...
Earlier this month, MacRumors was first to report that Apple was planning to permanently close its Partridge Creek store, just outside of Detroit, Michigan, and now the company has announced a closure date for the location.
Apple Partridge Creek
Apple Partridge Creek's final day of business will be Saturday, August 16, with the store set to close for good at 8 p.m. local time that day. All of ...
While the focus is now on iOS 26, there is still an iOS 18.6 update incoming.
As noted by Aaron Zollo, Apple on Wednesday re-labeled iOS 18.6 Beta 4 as simply iOS 18.6, meaning that it is the Release Candidate version. This change effectively confirms that the update will be released to the public next week.
Alongside the new label, Apple shared release notes for iOS 18.6, which is a...
We may finally have a definitive list of all color options for the iPhone 17 series, ahead of the devices launching in September.
MacRumors concept
In a Macworld report this month, Filipe Espósito said he obtained an "internal document" that allegedly reveals all of the color options for the upcoming iPhone 17, iPhone 17 Air, iPhone 17 Pro, and iPhone 17 Pro Max models.
The report...
Apple's iPhone 17 Pro and iPhone 17 Pro Max are less than two months away, and there are plenty of rumors about the devices.
Below, we recap key changes rumored for the iPhone 17 Pro models, as of July 2025:Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone 16 Pro models have a titanium frame, and the iPhone X through iPhone 14...