I am considering buying 3 4k LG UltraFine monitors to daisy-chain them to MacBook Pro via the BlackMagic eGPU Pro (Vega 56). According to the Apple website, I can daisy-chain 2 x 4k monitors, but I assume it is dependent on the display adapter (or even TB3 bandwidth limitations). Can I daisy-chain 3 of them if using this eGPU?
On a somewhat related note, I noticed Apple is no longer selling the Vega 56 version of the BlackMagic eGPU. Does anyone know why?
2019 16" MacBook Pro
Blackmagic eGPU Pro (Vega 56)
27" LG Ultrafine Display
2012 Mac Pro Tower
NVIDIA RTX 2070 Super
Acer Predator X34
@swisher-sweet, A Thunderbolt controller (whether in a Mac or in the BlackMagic eGPU) only has two DisplayPort inputs. This has been true since Thunderbolt 1. It's also true with Thunderbolt 4. Maybe someone will make a USB4 controller with more DisplayPort inputs.
Anyway, this means that the maximum number of displays you can connect to a Thunderbolt controller is two, whether you use one Thunderbolt port (with chaining) or two Thunderbolt ports.
With the Blackmagic eGPU Pro, you can chain two displays to the Thunderbolt 3 port, and connect a third display to the DisplayPort port using a Belkin Charge and Sync cable.
https://egpu.io/forums/gpu-monitor-peripherals/does-a-usb-c-monitor-support-displayport-input-over-a-usb-c-to-displayport-cable/paged/4/#post-79127
I guess AMD doesn't make the Vega 56 anymore?
Mac mini (2018), Mac Pro (Early 2008), MacBook Pro (Retina, 15-inch, Mid 2015), GA-Z170X-Gaming 7, Sapphire Pulse Radeon RX 580 8GB GDDR5, Sonnet Echo Express III-D, Trebleet Thunderbolt 3 to NVMe M.2 case