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[TechpowerUP] Club 3D Intros DisplayPort 1.2 to HDMI 2.0 Active Adapters with 4K-60 Hz Support - Page 16

post #151 of 241
Well. I'm looking into 4k tv's to toss in my computer room.

One issue I came across was I only have 1 HDMI port on my GPU. I have that HDMI port ran to my audio receiver.

If I ran the HDMI to my receiver, then plugged the 4k tv into the receiver I would not be able to do 4k@60Hz.


Only option I was able to work out would be change my receiver over to my mobo's on-board HDMI and then run the TV from my GPU's HDMi. Would like to not do this if possible.


So, this little adapter looks like just want I need to keep my receiver on my GPU's HDMI and run the TV off of one of my GPU's DP connections. Am I correct here?
Edited by Chargeit - 1/27/16 at 7:27am
     
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post #152 of 241
Quote:
Originally Posted by infranoia View Post

I literally cannot get closer and maintain focal length, much less get the entire screen in the shot at any kind of a resolution to capture individual pixels.
If that's the pixels I see in your image (which I doubt), then some scaling or resolution settings must be off. When you take a photo of the entire TV from 2-3 meters distance with desktop and web browsers open, pixel grid visibility is no longer a must, since the entire pic will show to experienced folks at what various device scaling and resolution settings the chroma test image was open and photo taken.
Edited by zamaracrillio - 1/27/16 at 7:30am
post #153 of 241
I found a much better test than arbitrary text legibility:

http://www.avsforum.com/forum/166-lcd-flat-panel-displays/2010602-4k-uhd-tv-4-4-4-60hz-capable-master-list.html#post34507522

This test is unambiguous and shows the display is not 4:4:4. It is likely 4:2:0 as mentioned above.
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post #154 of 241
Quote:
Originally Posted by Chargeit View Post

If I ran the HDMI to my receiver, then plugged the 4k tv into the receiver I would not be able to do 4k@60Hz.

So, this little adapter looks like just want I need to keep my receiver on my GPU's HDMI and run the TV off of one of my GPU's DP connections. Am I correct here?

Yes in theory. But in practice this Club3D HDMI2.0 advertised adapter was not shown so far to deliver 4K@60Hz 4:4:4 8bpc image, if that's what you're after. It will show 4:2:0 image instead, which is HDMI1.4 chipset limit. Unless you buy it and prove otherwise here. smile.gif
post #155 of 241
Quote:
Originally Posted by zamaracrillio View Post

Yes in theory. But in practice this Club3D HDMI2.0 advertised adapter was not shown so far to deliver 4K@60Hz 4:4:4 8bpc image, if that's what you're after. It will show 4:2:0 image instead, which is HDMI1.4 chipset limit. Unless you buy it and prove otherwise here. smile.gif

Thanks for the info.

Yea, honestly it makes more sense to just plug my receiver into my mobo and TV into my GPU's HDMI. It's free and should work as intended.

At $30 for this adapter on Amazon I don't feel like it's something I'm willing to buy unless I know it will work as intended. biggrin.gif
     
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post #156 of 241
Quote:
Originally Posted by Chargeit View Post

it makes more sense to just plug my receiver into my mobo and TV into my GPU's HDMI. It's free and should work as intended.

Yes, if your GPU has HDMI2.0 out port. Not only its free, but also Mobo Audio chipsets are usually of higher quality with better specs than GPU integrated Audio chipsets. If your GPU doesn't have a separate audio chipset, then it uses S/PDIF signal from Mobo sent out via HDMI GPU port. Given S/PDIF lower than HDMI1.4 bandwidth limits, such signal may be of limited resolution and fidelity compare to audio signal sent via the Mobo HDMI port.
Edited by zamaracrillio - 1/27/16 at 9:32am
post #157 of 241
Quote:
Originally Posted by zamaracrillio View Post

Yes, if your GPU has HDMI2.0 out port. Not only its free, but also Mobo Audio chipsets are usually of higher quality with better specs than GPU integrated Audio chipsets. If your GPU doesn't have a separate audio chipset, then it uses S/PDIF signal from Mobo sent out via HDMI GPU port. Given S/PDIF lower than HDMI1.4 bandwidth limits, such signal may be of limited resolution and fidelity compare to audio signal sent via the Mobo HDMI port.

My GPU has HDMI 2.0.

I think the audio is handled by the receiver once you toss that into the mix. Kind of the reason I haven't been worried about the source as much.

I have used optical in the past. Only issue there was windows 10 gave me problems using optical and DTS when I first installed windows 10. Also, I have HDMI ran from my GPU to the Receiver to a monitor that I use to the side for PC vitals. The only way for me to display my receivers "OSD" is to have it setup over HDMI to a monitor. Could still use optical as a source, but, then you deal with 5.1 only over DTS and windows 10 not seeming to like it (when I tested it).

But yea, I'll just move to the mobo's HDMI. I didn't want to use the IGPU for it, but, guess you have to do what you have to do. Also, in the future I'll move to platform that won't have an onboard HDMI. Guess I'll deal with that when it comes.


*I made a simple diagram illustrating what I'm planning on doing. Assuming I get the TV.
Warning: Spoiler! (Click to show)

Edited by Chargeit - 1/27/16 at 10:17am
     
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post #158 of 241
Quote:
Originally Posted by Chargeit View Post

I think the audio is handled by the receiver once you toss that into the mix. Kind of the reason I haven't been worried about the source as much.

Your diagram is fine. Yes, digital audio out is decoded by the Receiver. But in older Nvidia cards it was handled internally via S/PDIF connection to Mobo. So if the source audio file was encoded in a higher codec than S/PDIF can handle, to listen it needed to be down-sampled by the PC Audio Player before sent via Mobo internal S/PDIF Out -> GPU HDMI Audio Out -> Receiver. Newer cards have integrated audio codec chip, but its still often lower end compare to Mobo Audio chips. Hopefully it will pass untouched any audio source stream.

See HDMI Audio on NVIDIA GPUs.
Edited by zamaracrillio - 1/27/16 at 12:03pm
post #159 of 241
The surprises never end. It turns out, I cannot actually get a native 1080p signal through the Club3D while in Windows. It's possible that the firmware upgrade created this issue. I can do native 1080p through the BIOS boot screen, a passive Insignia and the native HDMI port, but the Club3D insists on always outputting 4096 x 2160 while in Windows. Practically speaking, this means that I cannot get 4:4:4 in 1080p nor view 3D content through the Club3D adapter, as everything is upscaled to the 4:2:0 / non-3D-supporting 4K res.

As far as the 290X is concerned, it believes it is outputting 1080p natively through DP, according to the adapter resolution list.

Could this be a side-effect of the pixel patcher?
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post #160 of 241
Quote:
Originally Posted by infranoia View Post

I cannot actually get a native 1080p signal through the Club3D while in Windows.
As far as the 290X is concerned, it believes it is outputting 1080p natively through DP, according to the adapter resolution list.
Could this be a side-effect of the pixel patcher?

I'm trying to discuss issues of controlling active display adapters with Windows Display team now. Windows can't ID any adapters hooked to a PC GPU, this was always viewed as GPU driver task. So Windows can't present any Control Panel for active adapters, despite they indeed may require user selectable output. Traditionally, display adapters were Passive, and GPU driver was tasked to switch GPU ports to output modes corresponding to the hooked adapter type. But controlling Active adapters through GPU CC is a challenge, as well as via Windows Display settings, since Windows doesn't communicate with them, while they may output to several displays at different resos at once. The issue is aggravated by a couple of things: a) for years only AMD presented driving multiple displays option via one GPU port using active adapters & Eyefinity technology, but Nvidia didn't match the suite, so MS wasn't compelled to add some controls to Windows Display, and neither GPU makers; b) DP1.2 standard supports only HDMI1.4 and DP modes, but not HDMI2.0, so GPU drivers face an unknown challenge when looking at HDMI2.0 active adapter, best they might do is output DP1.2 signal selected by a user in Win Display settings.

This means a user is in the dark when it comes to directly controlling an active HDMI2.0 adapter, and wholesalers like Club3D don't have system level programmers to deal with GPU driver APIs and handshake in the adapter firmware. As to removing bandwidth restrictions imposed by the GPU driver on connecting an adapter, in a normally working system it shouldn't prevent GPU from outputting a user selected signal like 1080P. The limits were designed to prevent displays showing garbled screens due to GPU sending higher bitrate than the adapter can handle. But times changed, users prefer 4K displays now, and HDMI2.0 adapters, and the GPU driver thinks: "what the heck I'm looking at? It might be some crazy HDMI1.4 adapter". And what happens inside the adapter is a big unknown. Once Club3D coders started interfering with Wiznet default FW for HDMI2.0 chipset, anything can happen. You can always revert to original bandwidth limits by re-running Pixel Clock Patcher, and see if it helps. But setting these limits is just one small factor in the large adapter puzzle. biggrin.gif

Not much an end user can do to solve this. Your best bet is to hit Club3D to make up on their ads, and also GPU makers on their forums and via support tickets. Yet again, don't expect much from their 1st level of support.
Edited by zamaracrillio - 1/28/16 at 11:22am
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