2021 14inch MacBook Pro external display capabilities?

I have the base model M1 Pro 14 inch MBP. It supports external monitor with 4K 144hz.

I connect the MBP to Gigabyte M28U (28inch, 4K 144hz), using USB-C to DP cable.

Hi Danwat97,

I don't think the 14" MacBook Pro can support 144Hz, although I could be wrong. Here's the Tech Specs sheet, which mentions that at 6K, the maximum refresh rate is 60Hz: MacBook Pro 14- and 16-inch - Technical Specifications - Apple

Also, the ProMotion built-in display can only accelerate up to 120 Hz. Because of this, I doubt that it will support external monitors at 144Hz.

External displays at up to 60Hz at up to 6K resolution at up to billions of colors. That is a whole lot of data and it REQUIRES DisplayPort family connection.

The provided HDMI 1.4 connection can only attain 4K at 60Hz and that with special "Certified" High speed cables.

Refresh rates as high as 144Hz are mostly specmanship. Ordinary computer devices cannot realistically attain those kinds of refresh rates. (but the built-in display can come close at up to 120Hz under certain conditions).

My post above is not correct in the NAME of the HDMI ports of the latest MacBook Pro M1 Pro and Max.

They feature HDMI 2.0, according to this article:

Connect to HDMI from your Mac - Apple Support

The limit of 4K at 60 Hz is correct. Special "certified" cables are required for resolutions above 1920 by 1080p.

the 'secret decoder ring' is in this article:

The USB-C Digital AV Multiport Adapter lets you connect your USB-C-enabled Mac or iPad to an HDMI display, while also connecting a standard USB device and a USB-C charging cable.

This adapter allows you to mirror your Mac or iPad display to your HDMI-enabled TV or display.

3840x2160 at 60Hz on:

iPad Pro 11-inch, iPad Pro 12.9-inch (3rd generation and later), MacBook Pro (16-inch, 2019), MacBook Pro (15-inch, 2017 and later), MacBook Pro (13-inch, four Thunderbolt 3 ports, 2020), MacBook Air (2020), iMac (Retina 5K, 27-inch, 2017 and later), iMac (Retina 4K, 21.5-inch, 2017 and later), and iMac Pro (2017 and later)

1080p at 60Hz or UHD (3840 by 2160) at 30Hz on:

iPad Air (4th generation), MacBook Air (2018 and later), MacBook Pro (13-inch, 2016 and later), MacBook Pro (15-inch, 2016), iMac (non-Retina, 21.5‑inch, 2017), and Mac mini (2018)

from:

USB-C Digital AV Multiport Adapter - Apple

.

I am looking to get the same monitor. Could you share your experience? Does it work at 4K 144hz with USB-C to USB-C cable? Would you be able to access the usb hub on monitor with USB-C to DP cable?

The monitor is great, I like it, the quality is very good. I use it for my Xbox Series X too. When I bought it in August last year , it was the cheapest monitor with HDMI 2.1 ports. A lot of other monitors were out of stock at the time. I don’t know if the circumstances have changed or not.

Do you know the capabilities for HDMI through the thunderbolt for example 1080 P or 1440 P at 120 Hz

USB c to usb c cable can’t support 4K 144hz. At least i couldn’t find one on Amazon.

HDMI can support 1440p at 120hz

Does that mean you need to use both magsafe for charging the laptop + USB C to DP cable? Are you able to access USB hub on the monitor?

Yes I use MagSafe for charging and usb c to DP cable. I can’t access usb hub on the monitor. The usb c port on M28U only provides 16w power, which is insufficient to power the laptop anyway.

I see. That's too bad you can't access usb hub. Are you happy with the monitor overall? Would you buy this again or different model?

I have MacBook Pro 14 and PS5. You helped me answered the questions I had. Thank you!