HDMI 2.0, DP 1.2 and picture quality

[Ashaira]

I am currently looking into buying a display for my new build and i want to get a 4K display.

After waiting and waiting the new 4k monitors started showing up in my country as well. However i recently found a sale on Samsung 4k TV's with HDMI 2.0.

After reading around a bit i found a mention on Anandtech that the HU6900 series even with HDMI 2.0 does not support 4:4:4 format but nstead has 4:2:0 which basically is what NVIDIA is using to get 4k at 60 Hz on HDMI 1.4.

I looked at the specs for HDMI 2.0 and found this
What are the 4K formats supported by HDMI 2.0?
4K@60
8BIT - RGB,4:4:4,4:2:0
10BIT - 4:2:0
12BIT - 4:2:2,4:2:0
16BIT - 4:2:0

I assume the 40HU6900 Tv has an IPS panel which should be 10bit but i can't find and info on this anyone know?



Also why can HDMI 2.0 do 4:2:2 at 12 bit but only 4:2:0 at 10?

I am not very familiar with the chroma subsampling technique but could someone help me decide on a display?


Below are the specs i am taking into account for each display:
Asus PB287Q: TN panel, 8bit + 2 bit dithering, 1ms response time, DP1.2 which i think has 4:4:4 at 4k 60Hz (can anyone confirm?), portrait mode for future surround


Samsung 40HU6900: IPS (?), 10bit (?), 8ms response time (just guessing, 8ms is the norm for IPS from what i know), HDMI 2.0 which either has 4:4:4 or 4:2:0, also needed a TV as i did not have one, BIG but not too big

I would love to get the Samsung TV but i don't know how bad it is at 4k using HDMI 2.0 (will probably ask them what they support exactly from HDMI 2.0 before buying) compared to the 8+2 bit but with full 4:4:4 support at 60Hz that the Asus has.

I know i would be limited to HDMI 1.4 until an active adaptor for dp1.2 to hdmi 2.0 comes out but if the display is worth it i could wait but which ones is better?

I don't know how big of a difference is between 4:4:4 and 4:2:0 at 4k and how that compares on a 10bit IPS display versus an 8bit+2bit TN.

Also i found this review of the TV but not sure how trustworthy it is that says it has full 4:4:4 support
Full 4:4:4 reproduction (PC) Yes, with [PC] input label


Note that i will be mainly gaming on the display with work and movies on the side.
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[Pseudoics]

Hello!

Gaming on a television comes with some compromises, usually in the total display lag department, and with 4K still not mature across the industry there are additional issues as you've seen. I do 80% of my gaming on plasma TVs so I'm also on the lookout for potential 4K replacements (none suit my requirements just yet) but I'll share some things.

First off, that HU6900 is a horrid choice for gaming or movies. Even reading through the review you linked, it shows sub-par motion resolution which defeats the purpose of 4K's sharpness (at least for gaming. And it's a -VA panel, not an IPS). It lacks 24hz refresh/multiplication modes (an industry standard for years) so bluray will display increased panning judder. It is a low-end 4K model so these are reflected in the price, I guess.

If you want a 4K TV to game on today, look into the 2014 Panasonic AX800/AX802 or upcoming AX900 range. These have HDMI 2.0 and are the only brand of 4K sets with Display Port 1.2. Both of which support 4:4:4 4K/60hz. No need to wait for or buy Maxwell/R9 390 etc.

Review Link http://www.hdtvtest.co.uk/news/tx-50ax802b-201405193778.htm

Of note to us gamers, these TVs have an official mode for pixel doubling of 1080p sources:

Panasonic also offers an option called [1080p Pixel by 4pixels] which doubles the pixels from a 1920×1080 source to fill the UHD panel instead of interpolating them. We saw no reason to enable this setting given how excellent the Viera AX802′s internal upconversion was.

Would be interesting to see this kind of scaling in action!

Now having said this, it looks like you're more interested in a large screen desk set-up rather than a HDTV arrangement. And at the price ranges of these TVs you can buy almost any - even several - of many current and upcoming 4K monitors. It's up to your needs and budget.


TL;DR
-You will definitely notice 4:2:x chroma in games regardless of panel bit-depth.
-Avoid the HU6900.
-2014 Panasonic for 4K HDTV gaming.
-Else buy a 4K PC monitor.

 

[Sicily]

Lol, what are you talking about? Do you have this TV?
I have it, and hu6900 supports 4:4:4 Full RGB and it is IPS panel.
Panasonic is far more better but its too large,65"..