Hi. I just got a Samsung CRG9 to use with my M1 Max Macbook Pro 2021.

I also bought a Thunderbolt 3/4 to Displayport 1.4 cable from Uni which can handle up to 8k@60 or 4k@120

https://www.amazon.com/gp/product/B09D7SJFG5/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1

and if I plug this cable directly into my MacBook pro and into the monitor. I can get 5120x1440 resolution at 120hz (almost the same amount of pixels as a normal 16:9 4k display)

However, if I use my existing dock (which is only Thunderbolt 3) I can only get 5120x1440 at 60hz.

I'm trying to find a dock that can handle 4k@120hz via a thunderbolt to display port 1.4 cable.

All the most known docks seem to be limited to a single monitor at 4k@120.

- Razer dock: https://www.razer.com/gaming-pc-accessories/razer-thunderbolt-4-dock/RC21-01690100-R3U1 (limited to 4k@60 even though this is supposed to be Thunderbolt 4?)

- Caldigit: https://www.caldigit.com/usb-c-hdmi-dock/ (limited to 4k@60)
- OWC: https://www.owcdigital.com/products/thunderbolt-3-pro-dock#tech-specs (limited to 4k@60)

I thought part of the thunderbolt 4 spec was that it should handle displayport 1.4 (which means it should be able to run at least 1 monitor at 4k@120hz?)

Or does that just not exist yet and I have to plug my monitor directly into my laptop every time?