- Nov 11, 2018
- Gigabyte Z490 Vision D
- RX 580
- Classic Mac
- Mobile Phone
Thunderbolt support daisy chaining. If you buy a Thunderbolt 3 dock with built-in DisplayPort or HDMI, it can provide additional video options without exhausting all Thunderbolt ports -- because most of these docks have a daisy-chain Thunderbolt port.Thank you, @CaseySJ, and many other contributors, for an invaluable guide!!! With your help I have a great system. I started with a RX 590, then tried a 5700 XT, but eventually settled on a 2080 Ti. I thought briefly about running 2 cards but decided against it because of thermal concerns. At the moment, I am using the 9900k's iGPU for my hack, via the Designare's HDMI port. I briefly ran into major trouble before I realized that the HDMI v1.4 port is limited to 4k30. I was caught in framebuffer purgatory and was only able to recover by reinstalling one of the AMD cards. At this point, those cards are no longer with me, so I am being very careful to avoid potentially problematic settings.
I am currently running at my monitor's native 1440p resolution, non-retina. I have both Thunderbolt ports tied up so I am unable to use them for video. I have been trying to figure out if there is anyway of adding video ports for the iGPU to utilize. As far as I understand, my bottleneck is the v1.4 HDMI port on the Designare. The iGPU AFAIK is capable of spitting out a good deal more than 4k30. Is there any way to add a card or adapter that would allow an HDMI v2 or DisplayPort output? Ideally I'd like to be able to utilize a retina resolution as close to (looks like) 1440p as possible.
The Belkin Thunderbolt 3 Dock Pro (which I have) is really well made and is available from Amazon for US$235. It has a daisy-chain port and DisplayPort.
EDIT: Alas, DisplayPort on the Belkin dock does not work. But there are other options, some of which are USB based. They use low-cost graphics controllers to provide basic capabilities. You can always buy an AMD GPU and use an SSDT to disable the Nvidia card (you're probably using the SSDT already). An AMD RX 560 or 570 is even cheaper than a Thunderbolt 3 dock.