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[TechpowerUP] Club 3D Intros DisplayPort 1.2 to HDMI 2.0 Active Adapters with 4K-60 Hz Support - Page 19

post #181 of 241
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Quote:
Originally Posted by inedenimadam View Post

Dang, so the jury is still out on these things? I am still on the fence about being a guinea pig for yet another product. I would have thought we would know by now if they will do 4:4:4 60hz. My LG and 980s do 4:4:4 60 just fine, but I want to also be able to use my old 7970 rig as well (they are DP 1.2 so they should work right?).

 

This is exactly one of the reasons i plan on getting one as well.

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post #182 of 241
@burksdb up there looks 4:4:4 to me, as long as that's a pixel-perfect scale on that test, but I'm sure @zamaracrillio would not use that as evidence.

There's functionality there-- namely, it's outputting 4K at 60Hz. That part works fine, and possibly 4:4:4 depending on your cable and your monitor. But yeah, it's a new device and HDMI 2.0 is still a screaming newborn baby, so YMMV.
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post #183 of 241
Welp, mine died today. Pretty pissed. Getting a refund and avoiding Club3d like the plague.

EDIT:

Looks like Accell has one released now, although $10 more, I'll be giving that one a try.
Edited by r0llinlacs - 2/1/16 at 2:27pm
    
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post #184 of 241
Quote:
Originally Posted by infranoia View Post

@burksdb up there looks 4:4:4 to me, as long as that's a pixel-perfect scale on that test, but I'm sure @zamaracrillio would not use that as evidence.

There's functionality there-- namely, it's outputting 4K at 60Hz. That part works fine, and possibly 4:4:4 depending on your cable and your monitor. But yeah, it's a new device and HDMI 2.0 is still a screaming newborn baby, so YMMV.

There is good reason to request evidence. 4:2:2 looks convincingly good on a 4k display....until you have seen 4:4:4. The vast majority of 4k TVs on the market do NOT do 4k 60 4:4:4, despite the incredibly misleading advertising the marketplace is riddled with on this topic. I only bought my TV because of someone else like zam that was adamant about the testing methods, and was able to sniff out what TVs were even capable. At the time it was like 5 different sets out of a sea of 4ks...

I wont buy one of these adapters if someone cant prove beyond a shadow of a doubt that they have reproduced 4k 4:4:4 60hz. I honestly think it should be club 3d to prove it...but since they're not represented in this thread, it is up to other users with the dongle to show us if it works.
Quote:
Originally Posted by infranoia View Post

Quote:
Originally Posted by r0llinlacs View Post

I agree. I want to see the pink chroma test image on the systems 4:4:4 supposedly works on.

Best of luck. The ChromaRes pink chroma test image doesn't work on my set with an explicit pixel format of 4:4:4 at 1080p out the 290X native HDMI port, nor does it work on this MacBook Pro 2015 at native resolution.

There are plenty of complaints about it out there at avsforum, hardocp, and madVR.

The only test I've found that accurately reflects 4:4:4 without wiggly user interpretation required is the one here: http://i.imgur.com/w8W1VPP.png. Open with MS Paint at 3840 x 2160, hit F11. If you have fewer blue lines than grey, then it's not 4:4:4.

The problem with that test is that there actually is one less blue line than gray line. They are offset.
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post #185 of 241
Quote:
Originally Posted by inedenimadam View Post

The problem with that test is that there actually is one less blue line than gray line. They are offset.

You don't count the lines. It is immediately apparent that there are fewer blue lines than grey, by a significant amount.

This is the one and only test that definitively showed my display was not 4:4:4.
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post #186 of 241
The key here is testing methodology. Many folks after getting a new long awaited gadget try to find a mode of operation that would justify the investment and confirm expectations. That's were we all need to be cold hearted and inquisitive about testing methodology, otherwise the market will be overwhelmed with fakes. Look at Club3D adapter as an example. Its claimed specs were never proven by the distributor. What prevented them from running and publishing same popular tests? May be they did, and the outcome was not all roses? Meanwhile, the ads created a myth about this product long before anyone was able to test it. Its laughable, users paid months ahead, practically crediting company shipments from China. Now folks started getting these adapters, and the tone changed. rolleyes.gif
Edited by zamaracrillio - 2/1/16 at 6:36pm
post #187 of 241
Sure. But anyone versed in the scientific method also understands the error of making broad conclusions based on a limited sample size.

My set is 4:2:0 at 4K, but that's not the adapter's fault necessarily, since that's the color mode explicitly mentioned in the firmware notes. It was wishful thinking on my part originally that the set was 4:4:4, but that was based on the faulty quick brown fox test, which is based on simple legibility and not dot pitch. With the proper test, it becomes clear, at least for my very specific setup, that I have no hope of 4:4:4 no matter the device.

There are too many variables to put the hammer down on Club3D just yet. They do claim 4:4:4-- they gain very little and have more to lose by lying about it, given that it should be obvious to them that their customer base is going to have a number of video professionals in it.
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post #188 of 241
Actually, the brown fox test should be analyzed looking at pixel grid, and at such closeup there are hardly any ambiguities. The problem is, many people don't have high reso digital cameras, while relying on mobile cams is prohibitive in such tests. I mentioned Club3D since most ads came from that particular distributor, despite such Wiznet adapters are sold now by several vendors, and made by at least 3 companies in China.
Edited by zamaracrillio - 2/1/16 at 8:57pm
post #189 of 241
Quote:
Originally Posted by zamaracrillio View Post

Actually, the brown fox test should be analyzed looking at pixel grid, and at such closeup there are hardly any ambiguities. The problem is, many people don't have high reso digital cameras, while relying on mobile cams is prohibitive in such tests. I mentioned Club3D since most ads came from that particular distributor, despite such Wiznet adapters are sold now by several vendors, and made by at least 3 companies in China.

So the other active adapters have hit the channel? Can you share links to the Wiznet active adapters? No hits from Google on that. Accell has one apparently, but I've not seen it at any vendor, just their website.

http://www.accellcables.com/products/displayport-1-2-to-hdmi-2-0-adapter?variant=11987416452

That's the reason you're seeing Club3D mentioned. There wasn't any active DP-to-HDMI 2.0 adapter prior to it; at least not one in any consumer outlet.

From Club3D's support website:
Quote:
Hi DeathofChaos, thank you for your feedback. Before concluding that the adapter doesn’t do what it’s advertised to do, please bear in mind that the firmware in this (advanced) adapter needs to establish a handshake between a very wide variety of hardware. Our HDMI 2.0 adapters are the first to ship globally in volume. This is new technology, although it has been extensively tested and we wish it would work perfect in any configuration it doesn’t. But based on the feedback we get it does a great job for most customers, enabling functionality they did not have before.
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post #190 of 241
Quote:
Originally Posted by infranoia View Post

Can you share links to the Wiznet active adapters?

There is broad misunderstanding that Club3D sells their own adapter. In reality, several NA and European distributors order such adapters from BizLink as OEM product under their own label printed on the adapter. Sorry for Wiznet typo, they sound very similar. biggrin.gif BizLink offers to print OEM label to any company which meets their volume order threshold.

Club3D may have a couple of coders trying to adapt the adapter FW to local TV market, or they ask BizLink programmers to do that, and those don't have access to local TV variety. Most likely BizLink forwards this task to HDMI2.0 chipset maker, and that's where it gets really slow. Meanwhile apart from BizLink, there're other makes of such adapters, possibly based on a different HDMI2.0 chipset or FW. In fact I just ordered one for testing, will post the links and results when available to avoid misleading claims. Club3D was just very active in promoting their label through popular NA marketing channels. In other words, they don't make this thing or probably anything. smile.gif
Edited by zamaracrillio - 2/2/16 at 5:40am
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