Easiest way to drive LG UltraFine 4K Monitor with eGPU
 
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Easiest way to drive LG UltraFine 4K Monitor with eGPU  

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devdevs
(@devdevs)
Active Member
Joined: 1 year ago
 

@joevt

Thanks for the heads up. / was missing from closing <b> tag. Interesting that forum software allows it to influence other texts. Should qualify for security / bug fix.

Razer Core X / Sapphire Vega 64
Macbook Pro 13" 2017 (Non-Touch Bar) i5 / 16GB / 512GB
Macbook Pro 16” 2019 i9 / 32GB / 2TB / 8GB Radeon Pro 5500m
Mac OS Catalina / Windows 10 1903 (Bootcamp)
LG Ultrafine 4K 24” - Thunderbolt 3 (Mac OS) / Huawei VR 2 DP Connection (Bootcamp > eGPU)


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jltawil
(@jltawil)
Active Member
Joined: 9 months ago
 

https://www.giztop.com/accessories/huawei/huawei-mate-11/huawei-vr-2-computer-connection-cable.html

 

 

I just received this cable from China and am happy to report that my egpu with a radeon vega 64 is driving one of my LG ultrafine 4k displays with my Mac Mini.

JT, Mac Mini + Razer Core X Chroma + Dual LG 4k Ultrafine + Sapphire Nitro 5700 xt


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devdevs
(@devdevs)
Active Member
Joined: 1 year ago
 

@jltawil

Congrats!

I'm about to get the cable. Can you please describe exactly how's everything setup? 

Do USB C ports work from the monitor? Speakers?

Can you control volume and brightness with keyboard both on macOS and Windows Bootcamp?

 

 

Razer Core X / Sapphire Vega 64
Macbook Pro 13" 2017 (Non-Touch Bar) i5 / 16GB / 512GB
Macbook Pro 16” 2019 i9 / 32GB / 2TB / 8GB Radeon Pro 5500m
Mac OS Catalina / Windows 10 1903 (Bootcamp)
LG Ultrafine 4K 24” - Thunderbolt 3 (Mac OS) / Huawei VR 2 DP Connection (Bootcamp > eGPU)


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itsage
(@itsage)
Illustrious Member Admin
Joined: 4 years ago
 

@devdevs I bought my Huawei VR-2 cable from the same place as @jltawil. It arrived tonight and here's how I got everything hooked up. It worked in both Windows 10 and macOS plug-and-play. 

external graphics card builds
best laptops for external GPU
eGPU enclosure buyer's guide

 
2020 13" MacBook Pro [10th,4C,G] + RX 5700 @ 32Gbps-TB3 (Prototype eGPU Enclosure) + macOS 10.15.4 & Win10 1903 [build link]  


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jltawil
(@jltawil)
Active Member
Joined: 9 months ago
 

I am trying to insert some screen shots but I have no idea how.

 

The mac mini will boot on the integrated card first, then will switch on the egpu once it passes a certain point in time in the boot process. The DP cable is plugged directly into the card, and the usb cable is plugged into the USB port of the RAZER box.

 

Here is a dropbox link.

 

https://www.dropbox.com/sh/vdgvuddfrq5r4it/AABi0JRUNVBC_VW8DuXRf6_va?dl=0

JT, Mac Mini + Razer Core X Chroma + Dual LG 4k Ultrafine + Sapphire Nitro 5700 xt


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LiE
 LiE
(@lie)
Eminent Member
Joined: 9 months ago
 

This has given me hope. I have the new 24” LG UltraFine. I presume this cable should work with this monitor as well? It does TB3 over USB-C but also accepts video from USB-C from what I can see? Can anyone confirm?

 

does the brightness and volume control work in MacOS? 

This post was modified 8 months ago

2018 Mac Mini i7 / 256 / 16GB
2019 24" LG Ultrafine 4k Monitor
Razer Core X + Sapphire Nitro+ RX 5700 XT


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jltawil
(@jltawil)
Active Member
Joined: 9 months ago
 

@buick_wong

I want to move up to a 5k display - so I need to buy this GC-Titan Ridge card and insert it into my Razer Chroma expansion slot where the USB controller currently is located? How do I then hook up the 5k monitor to the egpu? Do I jumper the DP to the DP on the Titan Ridge card? do they work internally? Does this work and provide full functionality for the 5k display including use of the camera and speakers etc?

JT, Mac Mini + Razer Core X Chroma + Dual LG 4k Ultrafine + Sapphire Nitro 5700 xt


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joevt
(@joevt)
Noble Member
Joined: 3 years ago
 

@jltawil I don't think the USB controller slot has been tested with four lane PCIe cards yet. Only single lane. You may need to cover up the other three lanes with tape, or use an x1 to x4 riser or cable, or use an externally powered riser that is not connected to a PCIe slot.
https://egpu.io/forums/thunderbolt-enclosures/four-pcie-slots-into-the-razer-core-v2/

Two DisplayPorts of the GPU are connected to the mini DisplayPort inputs of the GC-TITAN RIDGE (or GC-ALPINE RIDGE) add-in card using the included short DisplayPort to mini DisplayPort cables of the add-in card.

This will not provide full functionality of the 5K display. Additional software that does not exist is required to enable PCIe tunneling of the add-in card.

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


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ATLAS
(@atlas)
Active Member
Joined: 8 months ago
 

So, here's my conundrum. I really do like the LG UltraFine 23.7". I would also like to use an eGPU with my MM18, since I imagine I'll run into issues editing video or RAW photos using the integrated GPU on a 4K display. The problem is that it seems like ONLY the vastly overpriced and non-upgradeable BlackMagic eGPUs have Thunderbolt out in a way that retains all of the features of the UltraFine display.

The alternative is using a different eGPU solution and plugging both the eGPU and the monitor into the Mac itself. I have two questions when it comes to this:

  • 1) I understand this will result in a performance loss, but what sort of percentage am I looking at? That is, if I use an eGPU with an RX 580, is it going to perform like an RX 570? Or is it more/less drastic than that?
  • 2) Will the macOS UI be accelerated as well in this sort of setup, or only apps which are told to use the eGPU?

 

Thanks in advance for any insight!

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

.

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itsage
(@itsage)
Illustrious Member Admin
Joined: 4 years ago
 

@atlas You can get the Huawei VR 2 cable and use it with any eGPU to drive the 4K UltraFine Display. Giztop currently has the best price for US customers. I got one from them and it took about a week for delivery.

external graphics card builds
best laptops for external GPU
eGPU enclosure buyer's guide

 
2020 13" MacBook Pro [10th,4C,G] + RX 5700 @ 32Gbps-TB3 (Prototype eGPU Enclosure) + macOS 10.15.4 & Win10 1903 [build link]  


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