Is this possible? Titan Ridge + dual LG 5k

[Moon0326]

Hi,

I've Googled and asked around, but I haven't found an answer to this question yet.

Can a Titan Ridge drive two LG Ultrafine 5k monitors?

Or LG 5k + Ultrafine 4k?

 

[CaseySJ]

Hi,

I've Googled and asked around, but I haven't found an answer to this question yet.

Can a Titan Ridge drive two LG Ultrafine 5k monitors?

Or LG 5k + Ultrafine 4k?

Your motherboard supports the GC-Titan Ridge card, which can drive up to two 8K displays, two 5K displays, or a 5K/4K combination as well. This is possible because it has 2 mini-DP inputs connected to its two TB3 ports.

You must have a graphics card capable of supporting 5K displays, and you must connect DP port from that card to the mini-DP input on the GC-Titan Ridge. To support two 5K displays you'll need to connect 2 DP ports to 2 mini-DP inputs.

So check the specifications for your discrete GPU to see if it has at least 2 DP ports and can support two 5K displays concurrently.

Edit: The Intel UHD 630 can also drive a 5K monitor through the Thunderbolt 3 port. The 2018 Mac Mini 8,1 does this at the Apple Store.

 

[Moon0326]

Your motherboard supports the GC-Titan Ridge card, which can drive up to two 8K displays, two 5K displays, or a 5K/4K combination as well. This is possible because it has 2 mini-DP inputs connected to its two TB3 ports.

You must have a graphics card capable of supporting 5K displays, and you must connect DP port from that card to the mini-DP input on the GC-Titan Ridge. To support two 5K displays you'll need to connect 2 DP ports to 2 mini-DP inputs.

So check the specifications for your discrete GPU to see if it has at least 2 DP ports and can support two 5K displays concurrently.

Edit: The Intel UHD 630 can also drive a 5K monitor through the Thunderbolt 3 port. The 2018 Mac Mini 8,1 does this at the Apple Store.

Thank you CaseySJ.

What I'm confused is that I need to connect two DP from my GPU to Titan Ridge to drive a single LG 5K. I'm using RX 570 with two displays ports + hdmi + dvi.

Are you saying that I can simply add another LG 5k and just connection Titan Ridge's 2nd thunderbolt? May be it's not popular setup, I just can't find anything doing it over google.

 

[CaseySJ]

Thank you CaseySJ.

What I'm confused is that I need to connect two DP from my GPU to Titan Ridge to drive a single LG 5K. I'm using RX 570 with two displays ports + hdmi + dvi.

Are you saying that I can simply add another LG 5k and just connection Titan Ridge's 2nd thunderbolt? May be it's not popular setup, I just can't find anything doing it over google.

You’ll need a single connection from the RX 570 to convert a DP output to a TB3 output for a 5K TB3 display.

On motherboards with TB3 controllers built-in, it’s possible to drive a 5K TB3 monitor without any DP IN connections because the UHD 630 is wired internally to drive TB3 monitors. But with an add-in-card (AIC) I’m not sure but I doubt that iGPU will automatically drive any of the TB3 ports. This is because the iGPU is already wired to motherboard video ports, so you may need to connect a cable between the DP port on motherboard and DP IN on GC-Titan Ridge.

In other words, only 1 connection needed per 5K display (to the best of my knowledge).

 

[Moon0326]

You’ll need a single connection from the RX 570 to convert a DP output to a TB3 output for a 5K TB3 display.

On motherboards with TB3 controllers built-in, it’s possible to drive a 5K TB3 monitor without any DP IN connections because the UHD 630 is wired internally to drive TB3 monitors. But with an add-in-card (AIC) I’m not sure but I doubt that iGPU will automatically drive any of the TB3 ports. This is because the iGPU is already wired to motherboard video ports, so you may need to connect a cable between the DP port on motherboard and DP IN on GC-Titan Ridge.

In other words, only 1 connection needed per 5K display (to the best of my knowledge).

As far as I see, mine does not work with one connection. I have to put two displayports in order to drive my LG 5k.

 

[yarshure]

LG 5K need two lan DP 1.2 in-put,LG 5K only support DP1.2 mode.
if you plug LG 5k and 4k monitor to Titan ridge , I remember LG 5k will run 4k mode, because bandwidth limit.

 

[CaseySJ]

LG 5K need two lan DP 1.2 in-put,LG 5K only support DP1.2 mode.
if you plug LG 5k and 4k monitor to Titan ridge , I remember LG 5k will run 4k mode, because bandwidth limit.

Please see this post:

[SUCCESS] Gigabyte Designare Z390 (Thunderbolt 3) + i7-9700K + AMD RX 580

It might be a good idea to fully activate the UHD 630 ports. Whether this has an impact on the RX 580's ability to drive your HDMI TV is unclear, but it won't hurt and will rule out one additional factor. The easy way to do this is simply copy and paste the settings below to your config.plist...

www.tonymacx86.com

• In this case, one connection from RX 580 to DP-In port on the Designare Z390 motherboard was used.
• The Designare Z390 has a built-in Titan Ridge controller.
• This motherboard has only 1 DP-In port. It is impossible to connect two DP-Ins.
• Then one TB3 connection was made to the LG 5K display.
• The LG UltraFine 5K display has only 1 TB3 input connector.
• It is impossible to connect two video cables to the LG UltraFine 5K monitor.
• The Designare Z390 was then able to drive the LG 5K UltraFine at 5K resolution.

Here's the key sentence from the above link:

"I have plugged in an LG 5K UltraFine display into the TB3 port (after running a DP-to-DP cable from the RX580 to the DP-in) and it runs this absolutely fine, and boots to it with no issues."

 

[yarshure]

Please see this post:

[SUCCESS] Gigabyte Designare Z390 (Thunderbolt 3) + i7-9700K + AMD RX 580

It might be a good idea to fully activate the UHD 630 ports. Whether this has an impact on the RX 580's ability to drive your HDMI TV is unclear, but it won't hurt and will rule out one additional factor. The easy way to do this is simply copy and paste the settings below to your config.plist...

www.tonymacx86.com

• In this case, one connection from RX 580 to DP-In port on the Designare Z390 motherboard was used.
• The Designare Z390 has a built-in Titan Ridge controller.
• This motherboard has only 1 DP-In port. It is impossible to connect two DP-Ins.
• Then one TB3 connection was made to the LG 5K display.
• The LG UltraFine 5K display has only 1 TB3 input connector.
• It is impossible to connect two video cables to the LG UltraFine 5K monitor.
• The Designare Z390 was then able to drive the LG 5K UltraFine at 5K resolution.

Here's the key sentence from the above link:

"I have plugged in an LG 5K UltraFine display into the TB3 port (after running a DP-to-DP cable from the RX580 to the DP-in) and it runs this absolutely fine, and boots to it with no issues."

• My test base Z370 and Gigabyte Titan ridge + VEGA 56 + LG 5K， Mojave and Windows 10 two system.
• Gigabyte z390 designare design just like MBP15 2018，but MBP 15 have two titan ridge which support two LG 5K .
• I am also very surprised 5K must use two cable ,I also check DP cable.
• Maybe Gigabyte Titan ridge card don't support DP MST mode

 

[Douirc]

LG 5K need two lan DP 1.2 in-put,LG 5K only support DP1.2 mode.
if you plug LG 5k and 4k monitor to Titan ridge , I remember LG 5k will run 4k mode, because bandwidth limit.

correct, you need two DP inputs into a single TB3 output to properly drive the LG Ultrafine 5k. The catch is, from what I understand, the integrated titan ridge chipset is already designed to use the integrated GPU from the CPU as one 5K input. This makes the dp-to-dp from the dedicated GPU the second 5k input, giving you two separate streams into one TB3 output, needed by the LG 5k.

"I have plugged in an LG 5K UltraFine display into the TB3 port (after running a DP-to-DP cable from the RX580 to the DP-in) and it runs this absolutely fine, and boots to it with no issues."

yes, again, I think it works because the two dp input streams are delivered from the iGPU and the dGPU. titan ridge then sends both through TB3 and the LG stitches the image into a 5k resolution.

does everyone agree? I would love for more people to confirm this on their own Z390 Designare setup before I purchase a 5k monitor, new mobo and cpu.

Can a Titan Ridge drive two LG Ultrafine 5k monitors?
Or LG 5k + Ultrafine 4k?

Also a great question! The Titan Ridge has 2 TB3 outputs but is it smart enough to take 5k from iGPU and 5k from the dGPU and split it across the two TB3 ports? Basically, first 5k monitor = 2.5k iGPU + 2.5k dGPU and second 5k monitor = 2.5k iGPU + 2.5k dGPU. This would be another great, yet expensive two-5k-monitor test that I would love someone to try and confirm

 

[yarshure]

z390 designare LG 5k

z390 designare support two LG 5k 4k mode , one use integrated GPU and other use dedicated GPU.
LG Ultrafine 5k use DP 1.2, no 5k ,if you want 5k mode , you must buy plugin card.