With the launch of the 2023 Mac mini and MacBook Pro today, two machines capable of driving 8K displays, Apple has released a tutorial on how to use these high-resolution displays with Macs. Additionally, these new Macs support higher 4K refresh rates, up to 240Hz, and expanded support for variable refresh rate (VRR).
Support for higher-resolution displays comes from Apple's new M2 Pro chip, a faster, more powerful version of the original M2 chip that was featured in last year's MacBook Air and 13-inch MacBook Pro machines launched. The M2 Pro/Max chip appears in all 2023 MacBook Pro configurations and some Mac mini configurations. For Mac mini users, you'll want to make sure you get the model with the M2 Pro chip if you want to hook up an 8K display, as the entry-level configuration comes with the more affordable baseline M2 chip.
In addition to new Mac hardware, you'll also need an external monitor with 8K or 4K/240 Hz capability. As of now, there aren't many 8K desktop monitor options available, at least none with the required HDMI connectivity, although there are quite a few 8K TVs available.
Apple also states that you must use an Ultra High Speed 48 Gbps HDMI cable to take advantage of 8K or 4K/240Hz output . Apple recommends bypassing the adapter and connecting the HDMI cable directly to the HDMI port on your monitor or TV. Although it's not explicitly stated in its support documentation, the display's HDMI port needs to support HDMI 2.1 because older versions of HDMI lack the required bandwidth.
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