Club3D Intros DisplayPort to HDMI 4K-120Hz Adapter

[skizzo]

Long story short, I have it, but am holding off on a review until Club3D has a chance to fix some bugs.

Out of the box it really doesn't work well with Radeon GPUs, at least. Not sure if it's a brand issue or if LG just falsely advertised my TV as HDMI 2.1 compatible, or the part doesn't work. So many things to diagnose.

I'd like to hear more context on this when you have a chance. The specific equipment you used namely the GPU, TV / monitor, the length and type and/or brand of cable(s) for connecting GPU and display

I too have an RX 5700 XT (going by your listed system specs) and would very likely purchase this adapter to go with a new TV purchase like LG's 48" CX OLED which can do 4K 120HZ. As everything being advertised in good faith, on paper that setup should perform just as expected. I noticed they had a mentioning of specific length and type of cable, so it seems important to make sure you are not using a standard HDMI 2.0 (2.0b) cable which wouldn't have the bandwidth required. Makes total sense to me of course. Also it seems many TV's are finicky with needing a specific "mode" enabled to ensure some or all of their inputs are able to accept the full bandwidth they are advertised at. Just some two cents stuff there, but I know it's basic stuff that most all ready know.

 

[R-T-B]

I'd like to hear more context on this when you have a chance. The specific equipment you used namely the GPU, TV / monitor, the length and type and/or brand of cable(s) for connecting GPU and display

I too have an RX 5700 XT (going by your listed system specs) and would very likely purchase this adapter to go with a new TV purchase like LG's 48" CX OLED which can do 4K 120HZ. As everything being advertised in good faith, on paper that setup should perform just as expected. I noticed they had a mentioning of specific length and type of cable, so it seems important to make sure you are not using a standard HDMI 2.0 (2.0b) cable which wouldn't have the bandwidth required. Makes total sense to me of course. Also it seems many TV's are finicky with needing a specific "mode" enabled to ensure some or all of their inputs are able to accept the full bandwidth they are advertised at. Just some two cents stuff there, but I know it's basic stuff that most all ready know.

I used an LG B9, and a club3D 2m hdmi 2.1 cable as advised by them. No other inbetweens or added cabling. Using PC-mode on input 4 (others were tried too).

Furthermore, it works with a GTX 1060. Sadly, the issue is in AMDs drivers at this time.

I want to do a full writeup still but am waiting in hope AMD responds to my bug report.

 

[Valantar]

I used an LG B9, and a club3D 2m hdmi 2.1 cable as advised by them. No other inbetweens or added cabling. Using PC-mode on input 4 (others were tried too).

Furthermore, it works with a GTX 1060. Sadly, the issue is in AMDs drivers at this time.

I want to do a full writeup still but am waiting in hope AMD responds to my bug report.

What were you trying to test with the AMD GPU? Just UHD120Hz support, or VRR and other features? LG has been quite explicit in saying those TVs support only G-sync (i.e. they don't conform to FreeSync over HDMI requirements), so I would assume this applies even to an AMD GPU using a 2.1 adapter. That raises an interesting question though: is it at all possible for an adapter like this to adapt VESA DP VRR to HDMI 2.1 VRR? Or would the GPU need to support this natively regardless of the adapter?

 

[R-T-B]

What were you trying to test with the AMD GPU? Just UHD120Hz support, or VRR and other features? LG has been quite explicit in saying those TVs support only G-sync (i.e. they don't conform to FreeSync over HDMI requirements), so I would assume this applies even to an AMD GPU using a 2.1 adapter. That raises an interesting question though: is it at all possible for an adapter like this to adapt VESA DP VRR to HDMI 2.1 VRR? Or would the GPU need to support this natively regardless of the adapter?

I can make freesync work on HDMI 2.0, but no, never even got to testing it on the AMD card. It just won't show the resolutions in the EDID. Nothing over 4K 60hz.

And gsync fails on the nvidia side even if forced with CRU, so I would not get my hopes up.

 

[Gaby_64@live.ca]

I used an LG B9, and a club3D 2m hdmi 2.1 cable as advised by them. No other inbetweens or added cabling. Using PC-mode on input 4 (others were tried too).

Furthermore, it works with a GTX 1060. Sadly, the issue is in AMDs drivers at this time.

I want to do a full writeup still but am waiting in hope AMD responds to my bug report.

how about now?

 

[R-T-B]

how about now?

Never heard back. Am on the Radeon 20.5.1 drivers as of now with hardware scheduling. Is there something that's changed that's worth investigating? Because as of 20.7.1 or something the bug was still there. Never tried anything later.

I didn't even bother with the full review out of sheer dissapointment, frankly. (with AMD more than Club3d)

EDIT: Just tested 20.8.3. Still unable to use the adapter above 4k@60hz. Useless.

 

[Gaby_64@live.ca]

I have one on the way, I will be testing with a Radeon VII and an LG C9 65"

 

[sector-z]

Can you guy please post a update ? It worked with a AMD or not ?

 

[R-T-B]

Can you guy please post a update ? It worked with a AMD or not ?

Sorry, never got it working on AMD. Only briefly on nvidia. Adapter in general is real hit and miss support wise from gpu vendors.

 

[sector-z]

Ok . Do you think it will work if it only for the sound ? Exemple 6900 XT Displayport with Club3D adapter to HDMI sound bar ?

 

[Valantar]

Ok . Do you think it will work if it only for the sound ? Exemple 6900 XT Displayport with Club3D adapter to HDMI sound bar ?

Why not just use the native HDMI 2.1 port on the 6900 XT?

 

[sector-z]

Why not just use the native HDMI 2.1 port on the 6900 XT?

Because the port is used for a LG C1 Oled. The Computer cannot see the Bar excepted in Stereo connected by EARC to the TV. So I need to connect the soundbar Direct at the computer for DolbyAtmos ect

 

[Valantar]

Because the port is used for a LG C1 Oled. The Computer cannot see the Bar excepted in Stereo connected by EARC to the TV. So I need to connect the soundbar Direct at the computer for DolbyAtmos ect

Then you shouldn't need a HDMI 2.1 adapter for that, most likely any passive DP to HDMI adapter will work fine.

 

[sector-z]

Then you shouldn't need a HDMI 2.1 adapter for that, most likely any passive DP to HDMI adapter will work fine.

Ok I wanted to go with the best and a Active cable, for not having problem or lag ect. You have already try 1 cable for display and anothers for the sound from the video card ?

 

[Valantar]

Ok I wanted to go with the best and a Active cable, for not having problem or lag ect. You have already try 1 cable for display and anothers for the sound from the video card ?

"Best" is a rather strange way of putting this - an active cable can do more complex signal conversions than a passive cable, but it isn't "better", it's just a different thing. Unless you need HDMI 2.1-specific features, any passive 2.0 adapter will work just fine. Many devices support eARC on HDMI 2.0 devices despite it being introduced with 2.1. And passive cables literally can't introduce lag into the display chain, as they don't process the signal. Active cables shouldn't either, but theoretically they can.

I haven't used a setup like that with high bandwidth cabling, but as long as the system recognizes the second cable as an audio output it shouldn't cause problems (barring any shenanigans from device makers, of course).

 

[sector-z]

but as long as the system recognizes the second cable as an audio output it shouldn't cause problems (barring any shenanigans from device makers, of course).

Yes that why I ask because I don't know if it possible, I never see that on internet

 

[Valantar]

Yes that why I ask because I don't know if it possible, I never see that on internet

It's not really the type of thing people post about - if it works, it's the most obvious thing ever, after all. Just plug in the cables and off you go. If it doesn't work, it doesn't work, and you look elsewhere.


Edit: looking around a bit, it seems like passive adapters top out at HDMI 1.4 - but they are also dirt cheap. If I were you, I would get one of those and try it. Worst case scenario you're out something like $10, though you might even be able to return it if it doesn't work, depending on where you buy it from and where you live.