LG 5k Ultrafine + Hackintosh/windows SFF
 
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skol
 skol
(@skol)
Active Member
Joined: 3 years ago
 

@joevt

So Fatal1ty Z270 Gaming-ITX/ac. X570 would power it at 4k/60hz but only with the igpu. Would  Phantom Gaming-ITX/TB3 power it at 4k/60hz using a dedicated graphics card? I'm confused if the display port (that supports 4k/60) is over the tb3 port or it just means there is a separate display port on the board. I wanted to game at 4K/60hz.

Thanks again for all your help!

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)
Founder Admin
Joined: 5 years ago
 

Do not get the Fatal1ty Z270 Gaming-ITX/ac. Thunderbolt 3 on this motherboard is through an x2 PCIe connection [link]. X570 Phantom Gaming-ITX/TB3 is probably your best choice. It has the newest Titan Ridge TB3 controller through an x4 PCIe connection. Your constraints with the LG UltraFine 5K is the monitor input limitation rather than the output end of the computer. I believe it should work at 4k/60hz through the on-board Thunderbolt 3 port.

A Ryzen G processor with Radeon iGPU is not strong enough for 4K gaming so you'd need a dGPU. This can be done through graphics loopback acceleration. The feature is called Windows Hybrid graphics in Windows 10 1803 and newer versions. Each app/game can be configured manually to use the High Performance graphics card. I did a Thunderbolt 3 on AMD Ryzen build last fall with Fatal1ty AB350 Gaming-ITX/ac. This motherboard has no Thunderbolt 3 on-board so I used a GC-TITAN-RIDGE AIC through the x16 slot [link].

eGPU --> AIC TB3 Port --> iGPU --> HDMI Port --> HDMI Monitor

Your build takes things up a notch by using the Thunderbolt 3 port to provide TB3 monitor output through dGPU loopback acceleration.

dGPU --> iGPU --> On-board TB3 Port --> TB3 Monitor

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Eightarmedpet
(@eightarmedpet)
Famed Member Moderator
Joined: 5 years ago
 

@itsage

but you are going to need 2x PCIe slots for the LG 5k, one for the GPU and one for the add in card no?

I have been thinking about this myself, have an urge to build a PC atm, no real need, none at all, but an urge....

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

 
2018 Mac Mini [8th,6C,B] + RX 580 @ 32Gbps-TB3 (AKiTiO Node Lite) + Win10 20H2 [build link]  


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itsage
(@itsage)
Founder Admin
Joined: 5 years ago
 

@eightarmedpet We're limited to ITX motherboard and its single PCIe slot in this topic. Therefore the aim is not to reach full 5K resolution but a workable solution for 4K/60Hz through the on-board TB3 port. A Thunderbolt 3 AIC can definitely be added to feed two DisplayPorts into it for 5K Thunderbolt 3 monitor output. As @joevt suggested, x4 PCIe to M.2 adapter to draw power may be a possibility.

The best Thunderbolt 3 motherboards are Gigabyte Designare line. I believe the X299 Designare has dual DP-IN and two Thunderbolt 3 ports with its controller directly attached to CPU.

LinkedIn | Twitter | Facebook | Youtube | Instagram
 
external graphics card builds
best laptops for external GPU
eGPU enclosure buyer's guide

 
2021 14" Microsoft Surface Laptop Studio [11th,4C,H] + RTX 2080 Ti @ 32Gbps-TB4 (WD_Black D50) + Win11 [build link]  


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Eightarmedpet
(@eightarmedpet)
Famed Member Moderator
Joined: 5 years ago
 

@itsage

Aye, that was my point, think I just got the wrong end of the stick with what you are were suggesting. 

I've actually found a couple of small MATX cases which might be good for this type of build and not much bigger than MITX ones (although I do like the look fo the Thor).

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

 
2018 Mac Mini [8th,6C,B] + RX 580 @ 32Gbps-TB3 (AKiTiO Node Lite) + Win10 20H2 [build link]  


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Eightarmedpet
(@eightarmedpet)
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Joined: 5 years ago
 

@skol where did you end up on this?

I bought the AMD 570 board but its looking like lead times are quite long so cancelled, now trying to decide between the Intel board with 20gb limited PCIe lane TB3 or the AMD with DP in and TB3.

I know the intel one will work in some way 4K30 maybe, which will be useless, I need 4K60.

The AMD board has better TB3 implementation but getting it working is an unknown.

 

Edit: I'm a bloody idiot, these displays work with TB2 Macs at 4K and below, so the Intel Mobo will be fine and actually mean installing macOS will we WILDLY easier. 

This post was modified 2 years ago

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

 
2018 Mac Mini [8th,6C,B] + RX 580 @ 32Gbps-TB3 (AKiTiO Node Lite) + Win10 20H2 [build link]  


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joevt
(@joevt)
Noble Member
Joined: 4 years ago
 

@eightarmedpet

What Intel board?

No such thing as 20 Gb TB3 (except for the cable). Do you mean that the controller only has two PCIe lanes? That doesn't affect the 40 Gbps bandwidth which can be used for dual DisplayPort 1.2 (or DisplayPort 1.4 if Titan Ridge). The Apple Pro Display XDR can do 6K 60Hz 12bpc if you have a GPU that supports DSC. 6K using dual DisplayPort 1.4 might not be possible on PC (GC-TITAN RIDGE might not allow two HBR3 connections simultaneously without firmware update? needs testing).

I would like to see an adapter that converts DisplayPort 1.4 (with or without DSC) to dual DisplayPort 1.2 or DisplayPort 1.4 to support displays like the LG UltraFine 5K or Dell 8K from a single DisplayPort SST output now that we have GPUs that support DSC.

Mac mini (2018), Mac Pro (Early 2008), GA-Z170X-Gaming 7, Sapphire Pulse Radeon RX 580 8GB GDDR5, Radeon Pro W5700, Sonnet Echo Express III-D, Trebleet Thunderbolt 3 to NVMe M.2 case


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Eightarmedpet
(@eightarmedpet)
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Joined: 5 years ago
 

@joevt

cheers for the reply Joe! I'm currently on page 30 of the 5K Ultrafine thread on Mac and noticed you're name on there too so appreciate your insight into this.

This is the intel Mobo: https://www.amazon.co.uk/gp/product/B07HYNL939/ref=ox_sc_act_title_2?smid=A2OAJ7377F756P&psc=1

And apologies for getting confused, yes its less its only 2 PCIe lanes I believe.

I'm not sure what the best option is for me board wise. The AMD board has better TB3 implementation and with the DP in the GPU will actually be directly connected to the screen (albeit at 4K) but the ease of installing macOS on an AMD set up is an unknown to me atm.

My last have with the 270 version of this board was a walk in the park, but then the Tb3 implementation isn't ideal and I would have to be using eGPU software to pipe the GPU though to the monitor.

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

 
2018 Mac Mini [8th,6C,B] + RX 580 @ 32Gbps-TB3 (AKiTiO Node Lite) + Win10 20H2 [build link]  


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skol
 skol
(@skol)
Active Member
Joined: 3 years ago
 

@eightarmedpet

The build was a success! Thanks to everyone for the help and info. No issues with the AMD board and the lg 5k ( at 4k) mobo has a 'DP in' slot then you connect that to the GPU allowing you to just connect the display via TB3. A note to anyone buying the same mobo and wants to get it working: Make sure to update the bios to the latest version as they patched tb3 support to work properly. Also the mobo requires an intel CPU cooler (this really caught me out haha) - must be to save space, the board is tiny. This is the only itx motherboard with tb3 so it's worth mentioning for anyone wanting to go SFF with the LG 5k monitor (at 4k).

Cheers!

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)
Famed Member Moderator
Joined: 5 years ago
 

@skol

Thanks for the reply and the info! I’m really torn what board to go for intel or AMD. Did you instal macOS yet? Is there a sub forum in the forums where your build would fit? Would love more details and to see some pics. Do the speakers work?

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

 
2018 Mac Mini [8th,6C,B] + RX 580 @ 32Gbps-TB3 (AKiTiO Node Lite) + Win10 20H2 [build link]  


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