Question for dual Studio Display owners -
My two displays have shipped and are scheduled to arrive on Tuesday the 9th. What is the best way to connect them to my M1 Pro MBP? Connect both through a Thunderbolt 4 hub or connect each one to the MBP directly?
The reason I ask is that also connected to my Thunderbolt 4 hub is a 1G ethernet adapter, a Samsung T7 SSD, speakers (hub has a USB-to-3.5mm audio adapter), a Logitech mouse dongle and a wired keyboard.
First and foremost: Don't connect both displays to the same Thunderbolt port!
Even if that should work nominally you'd degrade the image quality with that since each display needs
more than half the 40Gb/s bandwidth of Thunderbolt already when run at full, uncompressed quality: 5120 * 2880 * 3colors * 10bit * 60Hz = 26.5Gb/s
So if you connected both to the same port they would be forced to switch to DSC compression, basically MP3 for displays, which can mean degraded visual quality in certain situations.
And then also adding a bandwidth-hungry SSD to that same port would really pile on the congestion and invite further issues (most likely not allowing the SSD to run at full speed and Ethernet possibly becoming flaky).
Ideally each display would be plugged into its own port and the Thunderbolt hub with the SSD and the rest of the devices into a separate third one. That would give you the maximum throughput for all devices.
The lower-bandwidth devices could be connected pretty much wherever practical and
should work anywhere.
Each of the displays can still share the leftover 14Gb/s of its Thunderbolt connection with other devices, but you should check above all what the top speed of your SSD is to see if it would fit into that (so it and the other devices might not need a separate Thunderbolt port) or if it would be slowed down by sharing with a 5k display.
Thunderbolt is very fast, but 5k / 10bit at 60Hz is a lot of uncompressed display data to pump out, too.
Apple Silicon doesn't have the bandwidth limitation for
pairs of Thunderbolt ports which Intel Macs still had, so that is not a factor any more.
Anyway, running off one port is preferable of course, as long as I'm not reducing my ethernet and attached SSD speeds to USB 1.0-equivalent
How fast is your SSD? Ethernet should not be a big concern at 1Gb/s and the other devices even less, but the SSD might if it's a very fast one.
(or inducing significant display artifacts by compressing two 5K streams).
Yeah, that would happen if you put both displays on the same port. Probably not visible
most of the time, but full, uncompressed quality at all times is only to be had if each display has its own Thunderbolt port and enough bandwidth for itself on that (it shouldn't care about the remaining 14Gb/s, though).
Anyone have any experience with this??
I'm using a Mac Studio with two 5k ASDs and another 4k display, each using their own ports and my Thunderbolt Dock plugged into the fourth. (The 4k could also go through the HDMI port, of course.)
But of course I acknowledge that for a MacBook the number of cables plugged into the machine is more relevant when connecting and disconnecting.
On the Mac Studio I just don't need to care about that.