Hello everyone. I would like to connect a MacBook Air 15'' M3 to an external monitor. The monitor supports 2k at 240hz. By buying a usb-c to DisplayPort cable that supports this frequency, can I connect it? Because I read from specifications that the Mac supports 6k 60hz as an external monitor but nothing is said about lower resolutions.
Thanks
[Re-Titled by Moderator]
MacBook Air 15″, macOS 15.2
Use an external display with your MacBook Air - Apple Support
"MacBook Air with M3 chip can support up to two external displays when the laptop lid is closed. The primary display can support up to 6K resolution at 60 Hz or 4K resolution at 144 Hz, and the secondary display can support up to 5K resolution at 60 Hz or 4K resolution at 100 Hz."
This article indicates that for a monitor with 4K resolution, you can get higher refresh rates (144 Hz or 100 Hz) than the Technical Specifications promise. There is no indication even here that a plain M3 chip supports 240 Hz refresh rates for any monitor.
My guess is that you'll be able to connect the monitor at 60 Hz – maybe 120 Hz, if you're lucky. But not 240 Hz. If the manufacturer of your monitor has manuals on their support site, the manual might contain "preset mode" tables showing you which combinations of inputs, resolutions, and refresh rates the monitor supports.
There is no doubt that this is possible. I have verified this with a 2k240hz monitor.
Now I am more concerned about several other more interesting questions based on this problem.
For example, how many hz is 6k60hz equivalent to 2k? How much is 5k60hz equivalent to 2k after closing the cover?
The reason why I am so concerned about 2k is that it seems to me to have the best display effect by connecting two 27-inch 2k resolution monitors at the same time.
Can a MacBook Air M3 support 2K 240Hz Monitor via USB-C?
