LG 48CX OLED - 4K 120 Hz

[Marak]

Can you take a screen shot of your Nvidia control panel ? i was only able to get 4k 120hz 8bit 4:2:0 with my 2080 via HDMI 2.0b.

Anything short of the 3000 series has to go down to 4:2:0 like you say. He hasn’t got 10-bit RGB running at those settings.

And text sucks in 4:2:0, far nicer now I’ve got full RGB going.

 

[chaparral]

You don't know what you're missing having a 55inch on a desk now come to think about it looks not big anymore

Wonder what my 65" OLED would be like on my desk

But think i need a much bigger desk for that

 

[Gino Giori]

The problem using only the tv as a monitor, is that one would need a monitor next to the tv, to ensure the TV does not drift too far away from sRGB. I do quite a a lot post production in photoshop and am curious to see if this tv can get close to sRGB. So far, none of the gaming monitors I have tried have been accurate. The only accurate monitors are the professional monitors. I am curious what a tv will do.

 

[Gino Giori]

Don't tell me you rushed out and only got a 3090 GPU because it have a 2.1 cable thinking it can 120hz over your RTX 2080, 8GB GPU in all title games? do the matts don't believe Hype
https://www.avforums.com/threads/is...-source.2273277/#lg=attachment1254816&slide=0

Where does the club 3d HDMI adapter come into the equation?

 

[AORUS]

This isn't completely accurate,in my perspective.
I'd prefer to sit next to my 27" 1440p screen 8-10hrs a day (for work), rather than the 48" OLED I have.
There's a comfort spot, but 48" is too large for work IMO. Don't get me wrong, it's immense for everything else.
ps. I sit around 2m away from the TV most of the time.

I run in 1440p/120 using my 2080Ti, since I don't like the look of chroma subsampling at 4k. (I'm waiting for the 3080s to come back into stock, to get the full potential).
At 1440p, it's got excellent sharpness and clarity, just as good as my 1440p or even better perhaps.

Will it do 1440p@120hz with VRR? Yes, certainly can with the gsync module and that's what I use. You'll not regret buying it for gaming and you'll likely not be able to go back to any other screen!

For the size, that's subjective - I was in the same boat as you. I wanted the largest screen for my room, but ended up going for the smaller one because of how well it fits into my room. If I went bigger, it would have been too big for using it as a PC monitor for me. I don't want to have to turn my head to read notifications etc, even though its more immersive. For gaming though, I can get closer to gain that immersion - it'll be especially good once we're at 4k.

Good luck deciding, it's not an easy choice!

Everyone to there own opinion

 

[AORUS]

Where does the club 3d HDMI adapter come into the equation?

Sorry man made a mistake in reading what you said I don't want adapter

 

[AORUS]

Wonder what my 65" OLED would be like on my desk

But think i need a much bigger desk for that

beautiful I am jealous

 

[peahead]

Anything short of the 3000 series has to go down to 4:2:0 like you say. He hasn’t got 10-bit RGB running at those settings.

And text sucks in 4:2:0, far nicer now I’ve got full RGB going.

I knew it already was just wanting him to confirm it was incorrect as HDMI 2.0b does not have the bandwidth.

 

[AORUS]

The problem using only the tv as a monitor, is that one would need a monitor next to the tv, to ensure the TV does not drift too far away from sRGB. I do quite a a lot post production in photoshop and am curious to see if this tv can get close to sRGB. So far, none of the gaming monitors I have tried have been accurate. The only accurate monitors are the professional monitors. I am curious what a tv will do.

don't use this TV for photograph it's ok for mobile phones and small cameras that are not professional as you get older in life everything looks the same

 

[AORUS]

Anything short of the 3000 series has to go down to 4:2:0 like you say. He hasn’t got 10-bit RGB running at those settings.

And text sucks in 4:2:0, far nicer now I’ve got full RGB going.

How quick you jump on the boat UHD must be enabled in screen. Connected by HDMI 2.0b Chroma subsampling must be 4:2:0 (This is important) And desktop depth must be set to 10Bpp 100/120hz

In Nvidia control panel setting have a TV or PC mode setting if set it to TV you only get 8bits with the TV setting

Like I said before GTX 1080 TI is 2.0B 4KUHD, HDR, 10Bit 100/120Hz GPU I didn't say in any of my post it all works together or with this TV only Nvidia control panel on a test run but in game setting I can get it

 

[Andrew Macgregor]

I use my CX 55inch 14 hours day and I mix the content from movie streaming - games- web when I play games the TV is in - PC mode, when I read online I change it to Expert Dark room mode the text is sharper then I watch Amazon/Netflix the computer is not on the TV sets the mode it self I like to change my modes on the TV but that is just me there a few good new features in the CX if you are worried about burn in plus you won't do a consistent 120hz in all games titles on your GPU just like me.

Bigger is always better than small in TV size if you have the space

Thanks for the great response - it answers a lot of questions! That LG quote was really helpful too it helped put my mind at rest, plus I found out that John Lewis have a policy that I can purchase that will cover it for 5 years against burn in... assuming that JL is still around in 5 years with Covid and all possibly hampering their sales - I hope they are, they're a good company.

With respect to size, I like your thinking! I was worried about the sharpness of the display at 55" given how close I'll be, but then I realised something, PPI wise, 4k at 55" not much different to 1080p at 27" which is better than my 32" 1080p IPS display that I'm currently running having returned the G9. So a 55 inch 4k screen is going to have a lot better PPI than what I've got right now! Also, I don't mind having to turn my head to see notifications and stuff, I'm more interested in screen real estate for my work, plus the 55" is cheaper than the 48" right now. So I'm really tempted by the 55" over the 48".

On the frame rate front, I know you are definitely right about my RTX2080, it struggled to get much over 60 FPS in some games on the G9 (5120x1440) and that is easier to drive than 4k, so yeah, probably on most modern titles I'll have terrible frame rates at 4k, but for the easier ones to drive, I'll be happy with anything over 60 or 70FPS. I dunno, perhaps I'll prefer running my games at 1440p to avoid the chroma sub-sampling until I either get something like a 3080 or 6800XT. Thanks once again for your perspective, much appreciated.

 

[peahead]

Don't tell me you rushed out and only got a 3090 GPU because it have a 2.1 cable thinking it can 120hz over your RTX 2080, 8GB GPU in all title games? do the matts don't believe Hype

Never rushed out to buy anything just wanted to get the best possible solution to go with my 48"CX and that is currently the RTX 3090. I never expected to get 120fps in every game lol it was more about getting 60 fps at 10bit 4:4:4 RGB HDR and G-Sync.

I play a lot of racing and 120fps @4k is achievable with this card.

 

[Andrew Macgregor]

This isn't completely accurate,in my perspective.
I'd prefer to sit next to my 27" 1440p screen 8-10hrs a day (for work), rather than the 48" OLED I have.
There's a comfort spot, but 48" is too large for work IMO. Don't get me wrong, it's immense for everything else.

ps. I sit around 2m away from the TV most of the time.

Thanks for your detailed response with another set of great information for me to consider. Just curious, is it only the size of the screen that makes you prefer the 27" 1440p, or are there other factors too, such as the increased PPI of the 27" 1440p?

I run in 1440p/120 using my 2080Ti, since I don't like the look of chroma subsampling at 4k. (I'm waiting for the 3080s to come back into stock, to get the full potential).
At 1440p, it's got excellent sharpness and clarity, just as good as my 1440p or even better perhaps.

If I go for the CX (and I'm leaning towards it), I have a feeling I'll probably run it in 1440p too, I don't like the chroma subsampling either.

Will it do 1440p@120hz with VRR? Yes, certainly can with the gsync module and that's what I use. You'll not regret buying it for gaming and you'll likely not be able to go back to any other screen!

Perfect thanks.

For the size, that's subjective - I was in the same boat as you. I wanted the largest screen for my room, but ended up going for the smaller one because of how well it fits into my room. If I went bigger, it would have been too big for using it as a PC monitor for me. I don't want to have to turn my head to read notifications etc, even though its more immersive. For gaming though, I can get closer to gain that immersion - it'll be especially good once we're at 4k.

Good luck deciding, it's not an easy choice!

On the one hand, the better price of the 55" and the better size if I decide to put it in the lounge are strong arguments for the 55"; on the other hand, by popular opinion, 48" is realistically going to be the more sensible option for a monitor. The only thing that I have at the back of my mind is there have been a couple of times in my life where I have taken a large leap in screen size, both times my immediate reaction was "Oh no, what have I done! ", but within a few days or a week or so, I'd got used to the increased screen size and it was fine. That said, if I go for the 55", it will be the biggest jump yet and I'd be lying if I said it didn't make me a little nervous.

I'll probably see what happens around Black Friday - perhaps the cost will decide for me.

 

[AORUS]

Never rushed out to buy anything just wanted to get the best possible solution to go with my 48"CX and that is currently the RTX 3090. I never expected to get 120fps in every game lol it was more about getting 60 fps at 10bit 4:4:4 RGB HDR and G-Sync.

I play a lot of racing and 120fps @4k is achievable with this card.

I can understand why now you wanted a 3090 + 48inch because of racing games fair enough I thought you are talk about all games @120hz Now What I mean to say is this I am luck to only get 78fps out of 120hz in AC Odyssey HDR game setting not TV settings . This TV CX 48/55 is design for all platforms with a big But from LG if I wanted a 48bps only 2.1 have it there is no 8bit in HDR only SDR the true HDR is only 10bit and when GPU Pascal came out it was 10bit HDR for games and no G-Sync. Now if LG made this CX TV for all GPUs that would been a different story

 

[AORUS]

Thanks for the great response - it answers a lot of questions! That LG quote was really helpful too it helped put my mind at rest, plus I found out that John Lewis have a policy that I can purchase that will cover it for 5 years against burn in... assuming that JL is still around in 5 years with Covid and all possibly hampering their sales - I hope they are, they're a good company.

With respect to size, I like your thinking! I was worried about the sharpness of the display at 55" given how close I'll be, but then I realised something, PPI wise, 4k at 55" not much different to 1080p at 27" which is better than my 32" 1080p IPS display that I'm currently running having returned the G9. So a 55 inch 4k screen is going to have a lot better PPI than what I've got right now! Also, I don't mind having to turn my head to see notifications and stuff, I'm more interested in screen real estate for my work, plus the 55" is cheaper than the 48" right now. So I'm really tempted by the 55" over the 48".

On the frame rate front, I know you are definitely right about my RTX2080, it struggled to get much over 60 FPS in some games on the G9 (5120x1440) and that is easier to drive than 4k, so yeah, probably on most modern titles I'll have terrible frame rates at 4k, but for the easier ones to drive, I'll be happy with anything over 60 or 70FPS. I dunno, perhaps I'll prefer running my games at 1440p to avoid the chroma sub-sampling until I either get something like a 3080 or 6800XT. Thanks once again for your perspective, much appreciated.

Your welcome 55inch is cheaper than a 48inch what you save can go to a good soundbar not every member here have a 55inch many just have 48inch in your game settings you can change the FPS I did the same it a great TV build for the future so far I will wait for the 4090 TI I am in no rush and it seams nor are you with a RTX 2080.

 

[peahead]

I am luck to only get 78fps out of 120hz in AC Odyssey

Ubisoft games are generally not very well optimized anyway, now Gears of war 4 on the other hand is and plays beautifully at 4K 120fps locked at ultra settings.

 

[Marak]

How quick you jump on the boat UHD must be enabled in screen. Connected by HDMI 2.0b Chroma subsampling must be 4:2:0 (This is important) And desktop depth must be set to 10Bpp 100/120hz

In Nvidia control panel setting have a TV or PC mode setting if set it to TV you only get 8bits with the TV setting

Like I said before GTX 1080 TI is 2.0B 4KUHD, HDR, 10Bit 100/120Hz GPU I didn't say in any of my post it all works together or with this TV only Nvidia control panel on a test run but in game setting I can get it

The boat of accuracy and truth?

You just confirmed exactly what I said and what everyone here knew all along - that you can do 4k 120Hz but only at 4:2:0. But you're acting like you possess some forbidden knowledge the rest of us don't already know and then mocking people who bought 3090's because they "don't need" them to do 4k 120Hz...

You can't do what we who have the 3070/80/90 can do:- 4k 120Hz 10-bit HDR G-Sync in RGB or 4:4:4 Chroma Only a card with HDMI2.1 can do that on the LG CX.

 

[R3X]

I've had two attempts at an Odyssey G9. I'll admit, I absolutely love that monitor, but both attempts have had issues ranging from bezel blead and dead pixels to scan line issues and bad flickering. Although I love the G9, given how many of them are having issues, I'm getting cold feet about going for a further attempt to get a good one. So, I'm now considering either trying a CX OLED or a 38" LG ultrawide, but before I make a decision, I have a number of questions in priority order regarding the CX:

• Has anyone tried it as a full time PC monitor (without any other monitor) for work (~10h per day) and play and noticed any signs of permanent image retention? Is going for a CX with this use case a bad idea? Or are the suggestions that I've noticed people making for monitor use good enough? Things like:
  • setting it at 45% brightness to help reduce the risk of burn in. At 45% is that really dark or still reasonably bright?
  • setting the contrast lower (60), again to lower the risk of burn in

• What is text sharpness like when the HDMI is set to PC mode? Is it perfectly clear? Or if not, at least as good as a 1440p monitor?

• I have an RTX2080, so realise that I won't be able to do 4k@120Hz with VRR since it doesn't have HDMI 2.1, but will an RTX2080 be able to do 1440p@120Hz with VRR over HDMI?

This may sound a stupid idea (feel free to chip in if you think it is), but I realise that a 48" is probably the better size to go for, but I'm considering a 55" with this logic - my desk is 800mm deep, if I hang the screen on the wall then I'd be sitting 90-100cm away from it for desktop use, which although isn't ideal, is hopefully far enough away to be manageable. For games, I have a sofa directly behind my desk chair, so if playing games, I could always sit on the sofa, either that or I could play in window'd mode for games that support that. So why 55" you may be asking? It is purely to do with this backout plan - if, for some reason I don't get on with the OLED as a monitor, then I could put it in the lounge as the family TV (my current TV down stairs is a really old 40" Sony Bravia 40W4000 that is still going strong, but a larger TV wouldn't go amiss). That said, primarily my hope is that I will like it as a monitor, so if I go for a 55", it would be really sad if my only gripe was that I'd wished that I'd gone for a 48".

I own the 48CX and also 800 mm deep desk, 48CX imo is far too big for a daily monitor use, it's ridiculously big. I feel you would need 1.2-1.5+m distance between you and the screen to be in the sweet spot zone, even I sit back due to long arms, so I am actually sitting far back from my CX screen probably 1.2metre back and its still too big for me.

I use a 28inch 4K monitor as my daily screen which is just perfect, even @ 32inch probably that would be OK.

I use free flux software or Windows night light for quicker control from bright to dark (contrast zones) otherwise my eyeballs would fall out.

Text is super sharp and clear on the LG CX panels but the key is to get RBG 4.4.4, this allows text to be sharper and detailed.

One way to test this, get 2 pieces of cardboard or join up some cardboard boxes with tape and make them to the same dimensions (height and width) of a LG 48CX and LG 55CX and then use drawing pins to pin them onto the wall and just sit back for a few minutes, it gives you a very rough idea of the magnitude of the screen size but its one of those things sadly you would only be 100% sure with the screen in front of you. You got the right idea of Wall mount ( I did this)
you don't want stands or anything to take up space, Wall mount is superior in creating distance between you and the screen, get a wall mount which is as flat and close to wall as possible.

For me, I use my 48CX mainly as a TV screen and sometimes as a monitor.

55CX would be ideal, think it was going for 1.2k 3 days ago but bumped up now, JL use Domestic and General for their insurance and TV repairs so even if JL go bust D&G will keep ticking. Any doubt of burn in go JL insurance, its only £140 I did. 48CX probably won't drop in price on Black Friday its rare and pretty much out of stock everywhere, JL were doing free ear phones and £100 gift card last week but offers change weekly maybe that can help off set some of the ££ for you.

 

[MarkA]

One way to test this, get 2 pieces of cardboard or join up some cardboard boxes with tape and make them to the same dimensions (height and width) of a LG 48CX and LG 55CX and then use drawing pins to pin them onto the wall and just sit back for a few minutes, it gives you a very rough idea of the magnitude of the screen size but its one of those things sadly you would only be 100% sure with the screen in front of you. You got the right idea of Wall mount ( I did this)

I did exactly this! (well, it was one large piece of cardboard from the lg65c8 I bought a couple of years ago.)
I totally forgot that I did this too, works very well to give you an idea!

Just curious, is it only the size of the screen that makes you prefer the 27" 1440p, or are there other factors too, such as the increased PPI of the 27" 1440p?

It is just the size really.

 

[Gino Giori]

I have to say that these last few posts have been revelatory to anyone having to make a potential buying decision.
The fact, that for the time being we can use 1440p at all times and have clear sharp text, as well as play in 1440p to avoid any flickering issues is also important. I was terrified at the idea of having to do chroma subsampling. It's funny no one mentioned Big navi cards. They are better than the GTX on paper, and draw less power. Plus they are a tad cheaper. In a nutshell, 55" @ 1440P, wall mounted is starting to become a feasible alternative to the 48". I am convinced the 48" will NOT drop in price in the USA on black Friday.