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Success chaining Caldigit TS3 Plus Dock & eGPU with three 4k 60Hz displays
 

Success chaining Caldigit TS3 Plus Dock & eGPU with three 4k 60Hz displays  

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senkwich
(@senkwich)
Active Member
Joined: 12 months ago
 

I've been using the Caldigit TS3 Plus dock for quite awhile, both at work and at home. It's great for most of my needs and my 15-inch Macbook Pro (2017 model) has no trouble driving two 4k 60Hz monitors (LG 27UK600-W at home, Dell UP3017 at work).

A couple of months ago, I bought the PowerColor Gaming Station for $200 (seems like it's still being offered at that price) along with an XFX AMD Radeon RX 580 GTS, which has three displayport inputs (to match the primary outputs of my home displays) and good compatbility with Macs. I finally got around to opening up my third display and swapping out the displays to connect to my eGPU setup. From there, I plugged the eGPU into the thunderbolt 3 port normally used to drive a display through the Caldigit.

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I'd seen one comment on the Caldigit product asking if you could daisy-chain an eGPU, and a representative responded saying yes. What kind of bandwidth you'd get, how many displays you could drive, and at what resolution/refresh rate, I have no idea.

Screen Shot 2019 03 16 at 19.57.42

Trying it out, the setup appears to work. In my Caldigit, I have a Kinesis Advantage, some knockoff gaming mouse, a GA Pre-73 Jr plugged in via the mic port, SD card, and couple of other small peripherals hooked up. From what the system report (and my eyes) are telling me, all three displays are running at 4K 60Hz. I'm not planning to do any gaming or heavy editing work that might stress the GPU, so this is working for me.

Originally, I was going to use two cables into my Macbook Pro, one for the Caldigit and another for the PowerColor, and I may still end up doing that depending on how this works out. Just wanted to let others know in case they were curious!

2017 15" MacBook Pro + Caldigit TS3 Plus + PowerColor Gaming Station + XFX AMD Radeon RX 580


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