which TV's are capable of 4K/60Hz 4:4:4 on PC with nvidia 900 series GPU - Page 2 - AVS Forum | Home Theater Discussions And Reviews
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post #31 of 304 Old 09-25-2014, 03:45 PM
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Quote:
Originally Posted by taekcool View Post
Yeah the blue text is all muddy on my Samsung even with the UHD color mode on.

I've emailed Samsung about the issue so hopefully they respond soon. The manual DOES state 4:4:4 @ 60 Hz is supported so if they cannot get this working that seems like false advertising to me.
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post #32 of 304 Old 09-25-2014, 07:51 PM
 
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According to the Toshiba 65Z9X/65L9400U it can do 4K/60 4:4:4 8-bit or 4K/60 4:2:2 8/10/12bit with HDCP 1.4

If your HDMI port uses HDCP 2.2 copy protection it drops down to 4K/60 4:2:0 8bit


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post #33 of 304 Old 09-25-2014, 09:39 PM - Thread Starter
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Quote:
Originally Posted by sytech View Post
According to the Toshiba 65Z9X/65L9400U it can do 4K/60 4:4:4 8-bit or 4K/60 4:2:2 8/10/12bit with HDCP 1.4

If your HDMI port uses HDCP 2.2 copy protection it drops down to 4K/60 4:2:0 8bit
Thanks! I wonder if this is true for the smaller 58L8400U as well, since the size and price are closer to what I'm looking for. Would be nice if someone could try it and report. Unfortunately the listed capabilities and what actually works can be two different things, as evidenced by the Samsung and Vizio sets that have been tested.
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post #34 of 304 Old 09-26-2014, 02:50 AM
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Not sure about any input lag on my LG TV but it was way better than having it at 30Hz and I find most tasks and gaming is normal and responsive.

However, the thing which really bugs me about my LG 55UB850T is everytime when I turn my TV on, the text is always fuzzy, even though my HDMI settings is on PC mode which makes the text cleaner and crisper, I always have to either go back into the menu and apply the settings again, even though its still on "PC Mode" when its not, or either plug my HDMI cable into another HDMI port, select the port, unplug the cable and plug it back into the HDMI 3 port which will give me clearer text again which is a pain in the ass. Not sure if this happens on all 4K TV's or just a LG problem. This only happens when my resolution is set to 3840x2160 or higher, the text is clearer on lower resolutions.

I'm pretty sure the LG 55UB8500 is the same as 55UB850T, 55UB850T is the Australian model number.
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post #35 of 304 Old 09-26-2014, 04:38 AM
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Originally Posted by sytech View Post
According to the Toshiba 65Z9X/65L9400U it can do 4K/60 4:4:4 8-bit or 4K/60 4:2:2 8/10/12bit with HDCP 1.4

If your HDMI port uses HDCP 2.2 copy protection it drops down to 4K/60 4:2:0 8bit



Thank you I was going to post this as well. I've been reading various message boards and seems many people don't even realize this is the issue. I believe Silicon Image makes the chips for these and once they upgrade to fix the reduced color output then it will be worth it to go 4k.

http://www.techradar.com/us/news/tel...cp-2-2-1256763

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post #36 of 304 Old 09-26-2014, 07:36 AM
 
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Originally Posted by Hisma View Post
We're talking 8-bit here.

4:4:4 8-bit with 4K 60Hz is absolutely possible in HDMI 2.0.

http://www.hdmi.org/manufacturer/hdm...i_2_0_faq.aspx

Users on this forum have confirmed this.
This poor 8 BIT
And theoretically
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post #37 of 304 Old 09-26-2014, 12:14 PM
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Originally Posted by cstmstyle View Post
Thank you I was going to post this as well. I've been reading various message boards and seems many people don't even realize this is the issue. I believe Silicon Image makes the chips for these and once they upgrade to fix the reduced color output then it will be worth it to go 4k.

http://www.techradar.com/us/news/tel...cp-2-2-1256763
Well HDCP shouldn't be an issue on the Samsung's. I did my research before buying and only one of the ports (MHL labeled one) are HDCP 2.2 enabled, rest are good for 4:4:4 @ 60 hz... yet it still doesn't work
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post #38 of 304 Old 09-26-2014, 12:19 PM
 
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Quote:
Originally Posted by jacoro1 View Post
Thanks! I wonder if this is true for the smaller 58L8400U as well, since the size and price are closer to what I'm looking for. Would be nice if someone could try it and report. Unfortunately the listed capabilities and what actually works can be two different things, as evidenced by the Samsung and Vizio sets that have been tested.
Be careful, the 58L8400U is a completely different set. I do not think it has local dimming, HDR retsore or the Game Turbo mode.
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post #39 of 304 Old 09-26-2014, 03:25 PM
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Well HDCP shouldn't be an issue on the Samsung's. I did my research before buying and only one of the ports (MHL labeled one) are HDCP 2.2 enabled, rest are good for 4:4:4 @ 60 hz... yet it still doesn't work
it's apparently something on your end though. looking at the geforce forums, other samsung 8550/9000 users are reporting 60 Hz @ 4:4:4 chroma without issues.
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post #40 of 304 Old 09-26-2014, 03:32 PM
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This poor 8 BIT
And theoretically
I know that 10 bit 4:4:4 has 1100 millions colors vs only 16.7 million for 8 bit. I am wondering how it actually looks like on a 4k TV. Since it has more ppi for any given 1080p TV size, I am thinking it is hard notice the difference between 8 and 10 bit?
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post #41 of 304 Old 09-26-2014, 03:35 PM
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Originally Posted by x3sphere View Post
Yeah the blue text is all muddy on my Samsung even with the UHD color mode on.

I've emailed Samsung about the issue so hopefully they respond soon. The manual DOES state 4:4:4 @ 60 Hz is supported so if they cannot get this working that seems like false advertising to me.
If this is a TV issue then it is absolutely unacceptable. Their manuals claim 4:4:4 capability.
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post #42 of 304 Old 09-26-2014, 05:04 PM - Thread Starter
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Quote:
Originally Posted by taekcool View Post
I know that 10 bit 4:4:4 has 1100 millions colors vs only 16.7 million for 8 bit. I am wondering how it actually looks like on a 4k TV. Since it has more ppi for any given 1080p TV size, I am thinking it is hard notice the difference between 8 and 10 bit?

You would notice the difference in reduced banding if you actually had 10 bit content for it. Blu-ray for example is 8 bit color with 4:2:0, and practically all PC applications are 8 bit. In practice you would likely see no difference until content catches up. You also wouldn't see a difference with 4:4:4 unless using it as a monitor.
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post #43 of 304 Old 09-27-2014, 01:24 AM
 
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Quote:
Originally Posted by taekcool View Post
I know that 10 bit 4:4:4 has 1100 millions colors vs only 16.7 million for 8 bit. I am wondering how it actually looks like on a 4k TV. Since it has more ppi for any given 1080p TV size, I am thinking it is hard notice the difference between 8 and 10 bit?
It's all about technology
Samsung's 12 BIT HU 9000 ( IN 1080P )LOOK good but not good like vizio R with 10bit !
This happens because the range of colors, technology,800-nit Ultra Bright backlight ,
Dolby's own HDR processing ,384 zones ,A color gamut that approaches the lofty heights of Rec 2020
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post #44 of 304 Old 09-27-2014, 11:47 PM - Thread Starter
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Just picked up the LG 49UB8500 today, since multiple people have confirmed it works with the 900 series cards. I won't have my GTX 980 to test it with until Tuesday, but once you have it set up correctly it is completely usable with HDMI 1.4. The text isn't that bad if you make the right cleartype selections and everything else is sharp and beautiful. I was a bit worried about input lag with the LG from some of the things I had read, but it seems responsive and no worse than the average 60Hz computer monitor. I do photo editing and seeing all the extra detail in 4K is pretty amazing. I will update once I get the card and can confirm 4:4:4.
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post #45 of 304 Old 09-28-2014, 01:01 AM
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On the lower-end of price range, I see two potential HDMI 2.0 4:4:4 TV sets usable as PC monitors:

- Panasonic TX-40AX630 (sometimes TX-40XA630E), this is a new set, currently some 700 euro but likely to be under 600 in month or two

- TCL U40S7606DS, this is at 570 euro, currently.

In both cases I have found 4:4:4 in specs, yet still waiting for "NVidia 9xx blessing and confirmation" test.

Last edited by nonamea; 09-28-2014 at 03:07 AM.
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post #46 of 304 Old 09-28-2014, 03:05 AM
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LG65UB950T handles 4K 60hz fine.
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post #47 of 304 Old 09-28-2014, 08:15 PM
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Can confirm 4K60/4:4:4 on my LG 49UB8500.

However occasionally the POST/BIOS/Windows boot screen will not display. Haven't figured out why, but sometimes it works, sometimes it doesn't'.
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post #48 of 304 Old 09-28-2014, 08:27 PM
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Quote:
Originally Posted by blah238 View Post
Can confirm 4K60/4:4:4 on my LG 49UB8500.

However occasionally the POST/BIOS/Windows boot screen will not display. Haven't figured out why, but sometimes it works, sometimes it doesn't'.
What GPU are you using bud?
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post #49 of 304 Old 09-28-2014, 08:31 PM
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Originally Posted by jacoro1 View Post
HDMI 2.0 does support 4:4:4 at 60Hz in 4K. It even says so if you look at the link you posted, albeit only in 8 bit color. Only a couple very specialized applications will use greater than 8 bit color on a PC anyway, so this is not a problem.
that's what I was going to ask. What type of content is greater than 8 bit? Gaming, new 10-bit deep color blu-rays?

Is there other deep color content for HTPC's?

(my 970 arrives tomorrow).
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post #50 of 304 Old 09-28-2014, 08:38 PM
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Originally Posted by sytech View Post
According to the Toshiba 65Z9X/65L9400U it can do 4K/60 4:4:4 8-bit or 4K/60 4:2:2 8/10/12bit with HDCP 1.4

If your HDMI port uses HDCP 2.2 copy protection it drops down to 4K/60 4:2:0 8bit
If HDCP is ON the port BUT not being used then does it still take up bandwidth? Or if the port has HDCP 2.2, it will have reduced bandwidth due to overhead no matter what?
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post #51 of 304 Old 09-28-2014, 10:16 PM - Thread Starter
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If HDCP is ON the port BUT not being used then does it still take up bandwidth? Or if the port has HDCP 2.2, it will have reduced bandwidth due to overhead no matter what?

It seems like the HDMI 2.0 ports on current TV's have to be pre-configured to do one or the other, can't toggle which one to turn on. I would think that would change with future chipsets. It may be this way on the 900 series cards too, haven't seen it confirmed which version of HDCP they support.
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post #52 of 304 Old 09-28-2014, 10:28 PM
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Hello Everyone,


Has anyone tried to get [email protected] 4:4:4 using the LG 65UB9800 and a GTX 980 GPU?

I was considering this combination until all the threads on multiple forums began appearing with the problems of HDMI 2.0, 4k/60hz/4:4:4 and HDCP 2.2


Thank you,
Monnie
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post #53 of 304 Old 09-29-2014, 12:58 AM
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What GPU are you using bud?
EVGA GTX 970: http://www.evga.com/Products/Product...04G-P4-1970-KR

Actually 2 of them, in SLI
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post #54 of 304 Old 09-29-2014, 01:00 AM
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Hello Everyone,


Has anyone tried to get [email protected] 4:4:4 using the LG 65UB9800 and a GTX 980 GPU?

I was considering this combination until all the threads on multiple forums began appearing with the problems of HDMI 2.0, 4k/60hz/4:4:4 and HDCP 2.2


Thank you,
Monnie
I am sure it will work since my 49UB8500 can do it.
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post #55 of 304 Old 09-29-2014, 12:14 PM
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Originally Posted by tjcinnamon View Post
that's what I was going to ask. What type of content is greater than 8 bit? Gaming, new 10-bit deep color blu-rays?

Is there other deep color content for HTPC's?

(my 970 arrives tomorrow).
Can anyone answer this? I seem to be focusing my purchase around it for the sake of future proofing but I'm failing to see where I'd see the gains on my HTPC.

Thanks,
JOe K.
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post #56 of 304 Old 09-29-2014, 12:43 PM
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Originally Posted by blah238 View Post
EVGA GTX 970: http://www.evga.com/Products/Product...04G-P4-1970-KR

Actually 2 of them, in SLI
Ok, Thanks! I'm using two GTX 780 Classifieds and probably not upgrading GPUs for 1-2 years. Seems like both 4K tvs/monitors and GPUs are in a transition phase right now. I'm thinking of ordering the 49 inch model tonight, though I'm sure LG will announce a replacement the week after I get it.
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post #57 of 304 Old 09-29-2014, 01:32 PM
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Originally Posted by blah238 View Post
Can confirm 4K60/4:4:4 on my LG 49UB8500.

However occasionally the POST/BIOS/Windows boot screen will not display. Haven't figured out why, but sometimes it works, sometimes it doesn't'.
Can you read the blue sentence on the following image? Maybe you can take a picture with your smartphone and upload it for us?

http://ffmpeg.org/pipermail/ffmpeg-u...attachment.png

You may refer to the following post:
http://hardforum.com/showpost.php?p=...&postcount=164
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post #58 of 304 Old 09-29-2014, 02:42 PM - Thread Starter
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Can anyone answer this? I seem to be focusing my purchase around it for the sake of future proofing but I'm failing to see where I'd see the gains on my HTPC.

Thanks,
JOe K.
There is currently no benefit to greater than 8 bit on an HTPC. You won't get greater than 8 bit at the desktop, in movies, or in games. Maybe in the future there will be 10 bit movies and a compatible media player application to play them, but by that time you'll probably be getting a cheap 4k OLED. I know Netflix was talking about possibly making their 4k content in a higher color depth, but who knows how long till software would support it on PC.
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post #59 of 304 Old 09-30-2014, 06:26 AM
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Price of Panasonic TX-40AX630E (I mentioned earlier) is apparently already down to 500 euro in Spain. Now, if (big if) it is 4:4:4 50 or 60Hz at 4K, which is still unknown AFAIK, computer programmers rejoice!

According to one Franch site it should be 4:4:4, but I only trust NVIDIA test. Also potential lag could be showstopper for PC usage. Can't wait for full test.

Edit: I have also info from Panasonic official FB page that this is 4:4:4 compliant product. Yet, it is not as valuable as GeForce test.

Last edited by nonamea; 09-30-2014 at 09:28 AM.
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post #60 of 304 Old 09-30-2014, 01:23 PM
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I can confirm 4k 60hz 4:4:4 working on my Panasonic WT600. Ive been using my display for almost a year as a PC monitor and it is nice to get away from displayport mst. This was the first display with full 18gb hdmi 2.0 bandwidth and does not support HDCP 2.2.
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