Easiest way to drive LG UltraFine 4K Monitor with eGPU
 
Notifications
Clear all

Easiest way to drive LG UltraFine 4K Monitor with eGPU  

 of  10
  RSS

Le Quang Duc
(@le_quang_duc)
New Member
Joined: 9 months ago
 

Huawei vr 2 cable can power delivery 60W from ultra 4k to macbook ?

 

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

.

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

@le_quang_duc, what model MacBook and Ultra 4K are you talking about?

The Huawei vr 2 cable works only in one direction - from computer to display. Power comes from the computer via USB 2.0 port (only a few watts) and goes to the display.

 

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


ReplyQuote
instrumedley
(@instrumedley)
New Member
Joined: 9 months ago
 

Any in-stock alternatives to the Huawei VR 2 cable?

Don't have an eGPU but stumbled upon this thread when looking for a solution to connect an original 21.5" 4K UltraFine to a PC. The cable isn't available anymore and costs upwards of $100 on eBay. If there's no alternative, I'd consider the eBay option but is there confirmation that it drives the full 4096x2304 at 60 Hz?

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

.

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

@instrumedley

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

4096x2304 at 60 Hz is DisplayPort 1.2 so any of the listed options should work.

 

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


ReplyQuote
instrumedley
(@instrumedley)
New Member
Joined: 9 months ago
 

@joevt, Thanks! I purchased a bidirectional ALOGIC USB-C to DisplayPort cable and was able to connect the LG UltraFine 4K (older 21.5" model) to an RTX 480 on a gaming PC and it worked! 60Hz at 4096x2304. No USB or audio but this will do for now.

 

This post was modified 8 months ago

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

.

ReplyQuote
simonb
(@simonb)
Active Member
Joined: 9 months ago
 

@instrumedley, interesting as most other posts suggest that this display needs USB power as well.

Thanks for keeping us posted!

 

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

.

ReplyQuote
instrumedley
(@instrumedley)
New Member
Joined: 9 months ago
 

Just want to report that I built a new computer with an NVIDIA 2060 Super (Founders Edition) which has a USB-C port for VR headsets on it.

 

I plugged in my UltraFine 4K (original edition) using the original LG TB3 cable and can confirm the USB hub on the back of the monitor and speakers work. Very happy to no longer need a bidirectional DisplayPort to USB-C cable in addition to the TB3 cable with an added bonus that my peripheral devices work. 

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

.

ReplyQuote
Bhavik Singh
(@bhavik_singh)
New Member
Joined: 6 months ago
 

Hi, I have an RX 580 8gb, which has a displayport 1.4.

I want to connect it to an LG Ultrafine 21.5" 4k. (I'd be buying this 2nd hand off of eBay for a good price)

I think the best way is to connect it using a bidirectional USB C to DisplayPort 1.4 cable, but I’m not sure whether it will work or not. Do you know?

This is the cable I’m thinking of using: https://www.startech.com/AV/display-and-video-adapters/usb-c-video-adapters/6ft-usbc-displayport-cable-8k~CDP2DP142MBD

 

By the way, my computer is a hackintosh that’s running macOS Big Sur but also dual boots into Windows 10. I mostly just care about achieving the full resolution of 4096x2304 at 60Hz when I’m in macOS, but it would also be welcome in Windows. And I’m not sure if the extra USB C ports on the monitor would be able to send data back to my graphics card and computer or not.

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

.

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

@bhavik_singh, see my answer at https://forums.macrumors.com/threads/lg-ultrafine-4k-and-5k-yes-you-can-connect-it-to-windows-computers-via-dp.2227756/post-28687387

 

 

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


ReplyQuote
stalfos
(@stalfos)
New Member
Joined: 6 months ago
 

Hey everyone.

I'm looking to drive an LG UltraFine display with a much simpler setup.

My setup is as follows:

MacBook Pro (13-inch, 2020, Four Thunderbolt 3 ports) running Catalina

• A single 23.5-inch LG UltraFine Display

I have no need of running or dual-booting into Windows.

I am considering getting a Razer Core X and putting a recent Radeon card in there.

My understanding after reading this thread is that I would connect the eGPU to the display with a DisplayPort to USB-C cable, but that wouldn't be enough to turn on the display or allow control of brightness of audio volume. Some have suggested a Huawei VR2 cable as the solution for that but it doesn't seem to be available anywhere.

What would be the simplest solution for this?

Thanks so much in advance!

This post was modified 6 months ago

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

.

ReplyQuote
 of  10