Are there any eGPUS (besides Blackmagic) that can power the LG Ultrafine 5K?
 
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Are there any eGPUS (besides Blackmagic) that can power the LG Ultrafine 5K?  

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kallaway1
(@kallaway1)
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Joined: 11 months ago
 

Hey wanted to provide an update, I bit the bullet and picked up a Black Magic eGPU and plugged it into the the Ultrafine. The heat from my laptop is night and day! It seems that my laptop's internal iris GPU still handles tasks on the laptop screen, but all tasks on the external Ultrafine display are handled by the eGPU (including web browsing and os-level rendering of menu screens, etc). This would actually give me the confidence to use my laptop in clamshell mode, surprisingly. For anyone that really doesn't want to go without the Ultrafine's insane resolution, this is a pretty decent setup.

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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joevt
(@joevt)
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Joined: 3 years ago
 

@palad20 That EDID seems to have been modified by SwitchResX. Did you add that 5120x2880 30 Hz mode or does it exist in the original EDID? Does that mode work?

@kallaway1 Check SwitchResX to make sure the 5K 60Hz resolution is using the 900+ MHz timing?

 

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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Hessel89
(@hessel89)
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Joined: 2 years ago
 

@palad20

You're getting full 5K at 60hz? 

And does brightness control work? 

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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bidoof
(@bidoof)
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Joined: 9 months ago
 

I tested this monitor with a bunch of GPUs, as well as the Moshi 5K cable (since it's one of the only bidirectional cables you can buy). At no point was I ever able to get 5K @ 60hz over pure DisplayPort with this monitor. The monitor DOES work with the cable (without Thunderbolt), but I was only ever able to get a maximum of either 4K60 or 5K30 (after hacking EDID data in). This is definitely an improvement over the previous version (which ONLY supports Thunderbolt), in the sense that you can now drive it with random GPUs if you just need a lower resolution picture, but you will still never get 5K60 on devices that do not natively output Thunderbolt 3.

I also confirmed, for anyone else wondering, that HDMI over USB-C is NOT supported. It must be a DisplayPort signal, so devices like a Nintendo Switch / Galaxy Note (DeX) will not work.

This post was modified 9 months ago

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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Eightarmedpet
(@eightarmedpet)
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Joined: 3 years ago
 

Cheers for sharing! I'd take 4K60 if I could drive directly, its pretty hit and miss for me if I ever get 5K (in Windows)...

2017 13" MacBook Pro Touch Bar
GTX1060 + AKiTiO Thunder3 + Win10
GTX1070 + Sonnet Breakaway Box + Win10
GTX1070 + Razer Core V1 + Win10
Vega 56 + Razer Core V1 + macOS + Win10
Vega 56 + Mantiz Venus + macOS + W10

---

LG 5K Ultrafine flickering issue fix

 
2017 13" MacBook Pro [7th,2C,U] + RX 5700 XT @ 32Gbps-TB3 (Mantiz Venus) + macOS 10.15.4 & Win10 2004 [build link]  


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bigmikeuk
(@bigmikeuk)
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Joined: 2 weeks ago
 

@kallaway1,  does the camera and speakers also work by using the Blackmagic egpu?

I have 2 original 5k LG ultrafines and that was melting my 2017 macbook pro, especially in web meetings (teams, zoom etc..), so much so that the macbook pro is bowed in the middle (doesn't close flush).  I don't know why apple say that it is a supported configuration...

So, I'm looking at a new solution to solve the heating issue..

I also want to add a 3rd monitor, but that is for another day..

 

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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joevt
(@joevt)
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Joined: 3 years ago
 

@bigmikeuk, yes, Blackmagic EGPU should allow you to use all the features of one LG UltraFine 5K display (USB, camera, brightness control etc.). You need one Thunderbolt controller per LG UltraFine 5K display.

You would have easier time connecting 3 Apple Pro Display XDR displays connected to an AMD Navi GPU because with DSC support, an XDR display only needs one DisplayPort connection.

This post was modified 2 weeks ago

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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bigmikeuk
(@bigmikeuk)
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Joined: 2 weeks ago
 

@joevt, thanks.

Posted by: @joevt

You would have easier time connecting 3 Apple Pro Display XDR displays connected to an AMD Navi GPU because with DSC support, an XDR display only needs one DisplayPort connection.

Yes, well everyone has a budget, so we can dream! lol.

I am kinda stuck with these LG 5k's that I got 2nd hand over 2 years ago..   I do absolutely love the screens, and have been successfully using them in clamshell until my company implemented Teams and Zoom, where the MBP just melts and the internal 560 just gives up, sending flashing signals to both monitors during a webmeeting, forcing me to shutdown the machine to recover.   The fans are very high in general as well, just to send the signal to 2 external displays.  So, I'm now just running just 1 with the MBP screen open and temps / fans are under control.

I also want to add a 38WN95C to my collection of Monitors to game on my high spec 2080ti Win10 PC (specs in another post).  So I wish to have a solution whereby the MPB is outputting to all 3 monitors, and the PC is outputting to the 38WN95C (as it has multiple connections - Thunderbolt3, DP, HDMI and is probably switchable and may even support dual picture)

So, question...  is this achievable, and what egpu solution is needed?

My current thoughts are:

MBP (left TB connection) -> Blackmagic -> LG UF 5k over TB + 38WN95C (3840x1600) over HDMI

MBP (right TB connection-> LG UF over TB

I have a GC Titan ridge AIC that I can't get LG 5k to work with for my Win 10 pc (probably motherboard related as it doesn't have the TBH), so could be used in a potential custom egpu solution to the above if the Blackmagic isn't a solution.

One thing that I must have is at least 1 working set of camera and sound from the LG 5k's, as I don't want to have even more hardware just to supply those.

Thanks in anticipation..

 

 

 

 

 

 

 

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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joevt
(@joevt)
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Joined: 3 years ago
 

Your suggested setup should be sufficient. The displays connected to the Blackmagic will both be powered by the RX 580 in the Blackmagic. The internal display and LG UF will be controlled by your MacBook Pro 2017's Radeon Pro 560 dGPU. The 5K's will both work at 5K.

When it becomes possible to add DisplayPort inputs (future USB4 product or future Thunderbolt driver) to a Thunderbolt device, then you can replace the Blackmagic eGPU with a new eGPU that uses that and still get all the features of the LG UltraFine 5K (camera, audio, USB ports).

@bigmikeuk, do you have the force power jumper in place on the GC-TITAN RIDGE (since you do not have a TBH header on your PC motherboard)?  #1,047  Maybe also disable any Thunderbolt options in BIOS. Install the Thunderbolt software (maybe not DCH)? Maybe do a warm boot into Windows.

 

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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bigmikeuk
(@bigmikeuk)
Active Member
Joined: 2 weeks ago
 

@joevt

Thanks for the input.  You would have seen in another thread that I have the Titan Ridge AIC working for PC Win10.. It sounds as if the Blackmagic solution is the easiest and most cost effective (even though it is expensive for that graphics card).

I was a little concerned that the 580 will be able to push out the 5k and 38WN95C at the same time.  Or moreover that TB3 has enough bandwidth to support both (5k @ 60hz 10 bits = 31.85 Gbps + 38WN95C @ 60hz 10 bits = 13.27 Gbps = Total 45.02Gbps), which is over the 40gbps of TB3.

calc: https://k.kramerav.com/support/bwcalculator.asp

 

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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