Yes, the 5K Retina iMac’s screen runs at 60Hz at 5K resolution


The Retina iMac on my desk, driving my pair of 27-inch Thunderbolt monitors. Lee Hutchinson I’m at the end of my time with the Retina iMac now that our Senior Applemeister Andrew Cunningham is back from his nuptials. He’ll be finishing up our coverage of the device, but I wanted to touch on a couple of final points with the big Mac before I send it on its way to the East Coast. We’ve received several variations of the same question submitted to our feedback form: does the Retina iMac operate at 60Hz in its native 5120×2880 resolution? And if so, how is that even possible, given that DisplayPort 1.2 doesn’t have the bandwidth to support that resolution and refresh rate? To answer the first question: yes, the iMac’s display runs at 60Hz, even when driving all 14.7 million pixels of its native 5k resolution. Apple directly verified this when I asked; the company also told Daring Fireball’s John Gruber the same. Further, it can be confirmed with apps that measure your refresh rate, like SwitchResX : The output from SwitchResX on the Retina iMac, showing the 60Hz refresh rate. For additional verification, a quick visit to a Web-based app that demonstrates 60Hz movement shows that the screen is operating at that refresh rate: Read 8 remaining paragraphs | Comments

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Yes, the 5K Retina iMac’s screen runs at 60Hz at 5K resolution


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