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[TheVerge] LG’s 2020 OLED TV introduces 48-inch size

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#501 ·
Monstieur said:
Can you confirm if HDR works in Windows at 4K 120 Hz 8-bit YCbCr420 with dithering? Someone reported that G-SYNC does not work at 4K 120 Hz 8-bit YCbCr420 either.
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HDR does not work @ 4k/120 4:2:0 on HDMI 2.0b. There just isn't enough bandwidth.

GSYNC does "appear" to work @ 4k/120 4:2:0 on HDMI 2.0b. I say "appear" because I cannot confirm this with the Pendulum demo. I have however played DOOM 2016 @ 4k maxed settings, and it places the framerate squarely between 60-120 most of the time. Strafing side-to-side, I did not see any frame tearing or skipping, which is what leads me to believe that it is working.
 
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#502 · (Edited)
Mad Pistol said:
HDR does not work @ 4k/120 4:2:0 on HDMI 2.0b. There just isn't enough bandwidth.

GSYNC does "appear" to work @ 4k/120 4:2:0 on HDMI 2.0b. I say "appear" because I cannot confirm this with the Pendulum demo. I have however played DOOM 2016 @ 4k maxed settings, and it places the framerate squarely between 60-120 most of the time. Strafing side-to-side, I did not see any frame tearing or skipping, which is what leads me to believe that it is working.
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Why does HDR require more bandwidth if it's till an 8-bit signal with dithering at the source? It should only be sending some metadata to activate HDR mode. I suspect Windows has a problem with enabling HDR with dithering in sub-sampled 8-bit YCbCr modes. On my Predator X27, Windows cannot enable HDR at 8-bit YCbCr422, but it can be enabled at 8-bit RGB / YCbCr444 and 10-bit YCbCr422. There's enough bandwidth on DisplayPort 1.4. It seems logical that dithering is impossible without full colour sampling.

Just rewatched some videos and saw that LG officially stated that VRR / G-SYNC is supported at 120 Hz on HDMI 2.0.
 
#504 ·
It depends where you're located because I've already seen them at my local bestbuy.
 
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#505 ·
yeah they're coming.

everything tech related that wasn't already in production pre-covid, has delayed production post covid.

they're starting to pop up here & there, no sure if they're Paid Advertisers (influencers) or what.
 
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#506 ·
skupples said:
yeah they're coming.

everything tech related that wasn't already in production pre-covid, has delayed production post covid.

they're starting to pop up here & there, no sure if they're Paid Advertisers (influencers) or what.
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yea i'm sketchy to order off some of these sites, some say pre-order, some say available so I rather just wait i guess.
 
#508 ·
Does C9 have a better HDMI 2.1 port than CX?
 
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#509 ·
ZealotKi11er said:
Does C9 have a better HDMI 2.1 port than CX?
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C9 is full 48Gbps
CX is 40Gbps.

What this means is the TV cannot show 12 bit content in 4:4:4. Does this matter? No, especially when you consider the panel is only 10 bit itself and majority of HDR content is HDR10. Also any 12 bit content you'll see is 4:2:0 anyways unless you're trying to run that bitrate on PC at 4:4:4 which i think you need a professional GPU to do so anyways?
 
#510 ·
Malinkadink said:
What this means is the TV cannot show 12 bit content in 4:4:4. Does this matter? No, especially when you consider the panel is only 10 bit itself and majority of HDR content is HDR10. Also any 12 bit content you'll see is 4:2:0 anyways unless you're trying to run that bitrate on PC at 4:4:4 which i think you need a professional GPU to do so anyways?
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Any dGPU can send 12 bit 4:4:4 (limited to 4K@30Hz or below on today's HDMI 2.0b GPUs). The restriction for 10 bit was only ever about OpenGL rendering in professional applications like Photoshop, nothing to do with the bitdepth of the video output. 10 bit+ video output has never been restricted to professional GPUs and any cheap consumer card has been able to send 10 bit to a TV or monitor that supported it for many years now.

But I agree with you that worrying about limiting 120Hz input to only the panel's native bitdepth is pointless. Games and videos render to 10 bit RGB surfaces at best anyway. 12-bit support is not useful in today's or tomorrow's ecosystem.
 
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#511 ·
Asmodian said:
Any dGPU can send 12 bit 4:4:4 (limited to 4K@30Hz or below on today's HDMI 2.0b GPUs). The restriction for 10 bit was only ever about OpenGL rendering in professional applications like Photoshop, nothing to do with the bitdepth of the video output. 10 bit+ video output has never been restricted to professional GPUs and any cheap consumer card has been able to send 10 bit to a TV or monitor that supported it for many years now.

But I agree with you that worrying about limiting 120Hz input to only the panel's native bitdepth is pointless. Games and videos render to 10 bit RGB surfaces at best anyway. 12-bit support is not useful in today's or tomorrow's ecosystem.
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I also read somewhere that 12-bit was designed for 10000 Nits brightness. Since the C9/CX only get to around 700 nits peak, 12-bit color is pretty useless.
 
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#514 ·
ILoveHighDPI said:
We still get color banding at 10bit. Eventually the display industry should just move on to 12bit in all applications.
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Not due to bitdepth, that banding is due to bad processing. Well dithered 10 bit is good enough for any display we are going to get anytime soon. 10000 nits is far away and even with that the only downside is slightly visible dithering noise.
 
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#515 ·
Well done HDR you dont need more than 700 nit. The problem with LG OLED is you can only increase to 700 small % of the screen. I was playing a PS4 game with HDR at night and some bright objects almost burned my eyes.
 
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#516 ·
ZealotKi11er said:
Well done HDR you dont need more than 700 nit. The problem with LG OLED is you can only increase to 700 small % of the screen. I was playing a PS4 game with HDR at night and some bright objects almost burned my eyes.
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That's partially by design, mainly to make HDR content pop even harder.

My Q90R gets significantly brighter for HDR, but 4K HDR looks better on the CX OLED because you can have perfectly dark pixels next to full-bright pixels on OLED. It isn't the brightness that makes the picture pop... it's the contrast.
 
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#517 ·
Just found out we aren't getting the 48" model here in Australia. Absolutely utterly disappointing.
 
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#520 ·
littledonny said:
Why can't you order one from abroad? Just curious.
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The shipping on something that big to Australia would probably actually cost just as much as the TV, and a 10% tax on buying things overseas is not ideal either.
 
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