LG 48CX

Joined
Oct 5, 2013
Messages
34
That's a massive plus for me, nice crisp clean display. Contrast that to the nasty antiglare lg used to used on its screens that scattered the light like you were looking through one of those frosted shower walls.

So long as your room lighting is not out of control, most people should be fine, though for some, the possibility of an errant reflection of themselves is too much of a risk to bare.

That the thing, right now I'm using the it for my main monitor for working from home. While working I do like to be in bright environment, not a gloomy dark room. Now that I made everything into dark mode on my desktop, the reflection is much more relevant.
 

elvn

2[H]4U
Joined
May 5, 2006
Messages
4,013
Yeah my main gaming display is a 1440p LG GK850G VA right now for the black levels... when I get an OLED later I'm going to be going into ultimate darkness can't wait.

tumblr_oxfo98Syiq1vje9sno1_500.gif





ebb9d0f47589867027319155d4397ac99480dbda_hq.gif
 

kasakka

2[H]4U
Joined
Aug 25, 2008
Messages
2,100
I was able to see the color shift now in Windows moving NVCP panel. It's just..totally inconsequential to me. It's one of those things you have to go looking for to notice it while otherwise you could be just enjoying your display.
 

Khnick

n00b
Joined
Jul 9, 2020
Messages
37
Just finished setting up my cx, I can't enable hdr when it's set to 4k 120hz 420 is that a limit of hdmi 2.0b or the cable I'm using? I thought using render scale would be better than 1440p but not if I can't use hdr I bought it now rather than when 30xx cards are out for death stranding and horizon zero dawn
 

Rkele

n00b
Joined
Jun 9, 2020
Messages
21
So dumb question, but how do I play 4k hdr mkv files onto the tv?

h.265 encoding which seems to not be supported by the tv and many streaming devices. dlna would not send it over from pc. I tried plex and it seemed to not have a clue what the videos were.

Is there a dedicated streaming box that can access the files on my pc and do the decoding on the device itself, then just send the image info via hdmi to the tv?

Latest Rokus? Nvidia shield? Something without needing special hardware?

I seems to support most of my h.265/HEVC movies. For a while I tried to figure out my movie players to work nicely with the higher level stuff and finally gave up. I've been messing with the settings so much during last years that only a Windows reinstall will get things back to normal :D Besides, I use SVP to convert everything to 60fps.
So, I just plug in one of my external movie drives directly to the CX and it can handle almost everything on it. It refused to play my largest HDR movie, 45GB, and even with that it only complained about incompatible audio (DTS-HD 7.1).
 

Rkele

n00b
Joined
Jun 9, 2020
Messages
21
Just finished setting up my cx, I can't enable hdr when it's set to 4k 120hz 420 is that a limit of hdmi 2.0b or the cable I'm using? I thought using render scale would be better than 1440p but not if I can't use hdr I bought it now rather than when 30xx cards are out for death stranding and horizon zero dawn
Mine started behaving when I set it to 60Hz 444. 120Hz with all the bells and whistles doesn't seem to be possible until Nvidia releases the 3000-series.
 

Khnick

n00b
Joined
Jul 9, 2020
Messages
37
With mpc-hc and mad vr it automatically switches to hdr when playing a hdr movie although bringing up the seek bar causes it to switch back to sdr while it's on screen, still seems more convenient than keeping windows hdr enabled
 

tybert7

2[H]4U
Joined
Aug 23, 2007
Messages
2,745
Just finished setting up my cx, I can't enable hdr when it's set to 4k 120hz 420 is that a limit of hdmi 2.0b or the cable I'm using? I thought using render scale would be better than 1440p but not if I can't use hdr I bought it now rather than when 30xx cards are out for death stranding and horizon zero dawn


hdmi 2.0 only goes up to 18gbps of bandwidth.

Speaking of which, anyone know of a bandwidth calculator to see what could theoretically support what resolution and color bit depth?

This one seems like the numbers are off.


https://k.kramerav.com/support/bwcalculator.asp

Looking for something where you could set the paramaters you are looking for, and figure out the missing variable from there.

So if you want 2560x1440 resolution, 10 bit color for hdr, 4:4:4, what framerate could you get to within the bandwidth budget of hdmi 2.0?
 

MistaSparkul

[H]ard|Gawd
Joined
Jul 5, 2012
Messages
1,622
Just finished setting up my cx, I can't enable hdr when it's set to 4k 120hz 420 is that a limit of hdmi 2.0b or the cable I'm using? I thought using render scale would be better than 1440p but not if I can't use hdr I bought it now rather than when 30xx cards are out for death stranding and horizon zero dawn

Even if you could run HDR, I would imagine it's not going to look very good since it's 8bit 4:2:0. Running 60Hz 8bit 444 or 10bit 422 would probably be the better option for HDR.
 

kasakka

2[H]4U
Joined
Aug 25, 2008
Messages
2,100
Just finished setting up my cx, I can't enable hdr when it's set to 4k 120hz 420 is that a limit of hdmi 2.0b or the cable I'm using? I thought using render scale would be better than 1440p but not if I can't use hdr I bought it now rather than when 30xx cards are out for death stranding and horizon zero dawn

Not enough bandwidth. Use 1440p 120 Hz or 4K 60 Hz.
 

mirkendargen

Limp Gawd
Joined
Dec 29, 2006
Messages
322
Yeah my main gaming display is a 1440p LG GK850G VA right now for the black levels... when I get an OLED later I'm going to be going into ultimate darkness can't wait.

View attachment 260219





View attachment 260220

That's the exact monitor that I had as my primary that has now been relegated to secondary. It's black is laughably bright side by side with the OLED. Like, it looks like I have the display set to full range and the GPU set to limited range so the display is displaying black as 16-16-16 in comparison. It's motion clarity is far worse.
 

Armenius

Fully [H]
Joined
Jan 28, 2014
Messages
23,036
hdmi 2.0 only goes up to 18gbps of bandwidth.

Speaking of which, anyone know of a bandwidth calculator to see what could theoretically support what resolution and color bit depth?

This one seems like the numbers are off.


https://k.kramerav.com/support/bwcalculator.asp

Looking for something where you could set the paramaters you are looking for, and figure out the missing variable from there.

So if you want 2560x1440 resolution, 10 bit color for hdr, 4:4:4, what framerate could you get to within the bandwidth budget of hdmi 2.0?
bandwidth = (hRes * vRes * bpc * 3 * vHz * bEncode * chroma) / 1024³

For bEncode:
  • HDMI 2.0 = 1.25
  • HDMI 2.1 = 1.125
For chroma:
  • 4:2:0 = 0.5
  • 4:2:2 = 0.6̅
  • 4:4:4 or RGB = 1
So your example:

vHz = (18 * 1024³) / (2560 * 1440 * 10 * 3 * 1.25 * 1)
vHz = 19,327,352,832 / 138,240,000
vHz = 139.8101

Maximum vertical refresh rate for your specifications over HDMI 2.0 is about 139 Hz. There is the question of the HDR overhead, though, which unfortunately is not clearly documented anywhere. I would say it's safe to say you can do 120 Hz.

You can just plug the above formula and variables into a spreadsheet.
 
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madpistol

Limp Gawd
Joined
May 17, 2020
Messages
465
I was able to see the color shift now in Windows moving NVCP panel. It's just..totally inconsequential to me. It's one of those things you have to go looking for to notice it while otherwise you could be just enjoying your display.
I never noticed it until it was pointed out here. Completely non-issue for me. Every display is going to display some sort of off-angle viewing artifact, and I guess this just happens to be LG's OLED tech. If this is a deal breaker for anyone, please let me know which display out there offers the pixel response and perfect blacks of OLED.
 
Joined
Jul 25, 2012
Messages
901
I never noticed it until it was pointed out here. Completely non-issue for me. Every display is going to display some sort of off-angle viewing artifact, and I guess this just happens to be LG's OLED tech. If this is a deal breaker for anyone, please let me know which display out there offers the pixel response and perfect blacks of OLED.
None but many 38" LG IPS panels do provide near perfect white uniformity with minimal glow and more meaningful input options for PC usage.Pick your poison.
 

defaultluser

[H]F Junkie
Joined
Jan 14, 2006
Messages
13,826
So dumb question, but how do I play 4k hdr mkv files onto the tv?

h.265 encoding which seems to not be supported by the tv and many streaming devices. dlna would not send it over from pc. I tried plex and it seemed to not have a clue what the videos were.

Is there a dedicated streaming box that can access the files on my pc and do the decoding on the device itself, then just send the image info via hdmi to the tv?

Latest Rokus? Nvidia shield? Something without needing special hardware?


I play back on my C7 using Universal Media Server, although the latest LG firmware update means I have to restart the server nightly.

Supports playback of my older h.264 and newer h.265 recordings oin MKV, and also supports playback of MPEG2 TV recordings.

You may have to disable Windows Firewall to get it to see the server, but it's listed under the inputs.

I haven't been able to get 4k hdr playback working over DLNA (even using Ethernet, the file skips frames), but you can probably connect a drive to the USB3 ports to get that working.

Your best bet is to play it back on your graphics card (you may have to install some codecs from the Microsoft Store to get HdR video playback working)
 
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MistaSparkul

[H]ard|Gawd
Joined
Jul 5, 2012
Messages
1,622
None but many 38" LG IPS panels do provide near perfect white uniformity with minimal glow and more meaningful input options for PC usage.Pick your poison.

He was asking what else offers perfect blacks and response times like OLED. Those LG monitors do not offer that. I'm not going to disagree that an IPS makes for a better pc monitor though, I still use my Acer X27 as the desktop display primarily for 3 reasons:

1. Size is more doable for me
2. Being IPS, the odds of burn in are practically zero
3. I love me some high PPI for amazing text clarity and 4k at 27 inches is just so damn CRISP.
 

caffix

Weaksauce
Joined
Nov 13, 2014
Messages
65
So, what games do you all think look best on this display? Curious to know for people who have gotten theirs and tested some out. I might pick one up while waiting for better gpus since my current games are not visual stunners.
If you really want to show off what this screen can do, Detroit: Become Human. It's simply staggering in quality. I also think it performs amazingly well at 4K on cards, I played on a single 1080 (non-TI) and it was smooth and beautiful.
 
Joined
Jul 25, 2012
Messages
901
He was asking what else offers perfect blacks and response times like OLED. Those LG monitors do not offer that. I'm not going to disagree that an IPS makes for a better pc monitor though, I still use my Acer X27 as the desktop display primarily for 3 reasons:

1. Size is more doable for me
2. Being IPS, the odds of burn in are practically zero
3. I love me some high PPI for amazing text clarity and 4k at 27 inches is just so damn CRISP.
Hence the first word in my reply None :)
 

SoCali

Limp Gawd
Joined
Jun 29, 2020
Messages
164
Is setting color gamut to "Auto" closest to sRGB? Seems like Wide and Extended are over saturated.
 
Joined
Oct 5, 2013
Messages
34
He was asking what else offers perfect blacks and response times like OLED. Those LG monitors do not offer that. I'm not going to disagree that an IPS makes for a better pc monitor though, I still use my Acer X27 as the desktop display primarily for 3 reasons:

1. Size is more doable for me
2. Being IPS, the odds of burn in are practically zero
3. I love me some high PPI for amazing text clarity and 4k at 27 inches is just so damn CRISP.

The Acer x27 is a beast! the screen is gorgeous, super bright and clear. My only issue with it is that its kinda small and the IPS glow... I can't wait for the x32 to come out!
 

Tol

Limp Gawd
Joined
Jan 5, 2005
Messages
244
I took a quick shot of my 65" C7 while on a gray background. I was at about a 45 degree angle and maybe 3ft away. If I were to walk left across the screen, the "red" would move with me. From 6-7' away and centered, it's far more difficult to perceive.

My C9 doesn't look as nearly as bad as the C7, and the camera makes things more pronounced than I see with my eyes. I find it hard to imagine anyone being bothered by it in normal situations...I hadn't even noticed it.

IMG_0783.JPG
 

vick1000

2[H]4U
Joined
Sep 15, 2007
Messages
2,137
Yeah exactly. Very VA-like. I just didn't want to make this comparison to avoid igniting even greater storm. It looks almost exactly like VA gaming displays I used to run.
VA has an actual gamma shift, OLED is a color or more acurately, white balance shift. All tech has some white uniformity issues, LED lighting having a major effect. Edge lit LED panels can be worse than OLED. Screen coating also has an effect. Sitting here in front of my Sony X800H, it has a similar effect, due to edge lighting.

This image will show any gamma shift, the logo should be indistinguishable from the background if gamma is correct...

http://www.lagom.nl/lcd-test/viewing_angle.php
 

Murzilka

Gawd
Joined
Dec 11, 2011
Messages
898
Great. The OLED color shift is now a common kn
VA has an actual gamma shift, OLED is a color or more acurately, white balance shift. All tech has some white uniformity issues, LED lighting having a major effect. Edge lit LED panels can be worse than OLED. Screen coating also has an effect. Sitting here in front of my Sony X800H, it has a similar effect, due to edge lighting.

This image will show any gamma shift, the logo should be indistinguishable from the background if gamma is correct...

http://www.lagom.nl/lcd-test/viewing_angle.php
Check the image posted right above your post - that is how the lagom test looks like on the C7. The red also moves with you if you move across the screen...
 

elvn

2[H]4U
Joined
May 5, 2006
Messages
4,013
He was asking what else offers perfect blacks and response times like OLED. Those LG monitors do not offer that. I'm not going to disagree that an IPS makes for a better pc monitor though, I still use my Acer X27 as the desktop display primarily for 3 reasons:

1. Size is more doable for me
2. Being IPS, the odds of burn in are practically zero
3. I love me some high PPI for amazing text clarity and 4k at 27 inches is just so damn CRISP.

the OLED gets more crisp the farther away (within reason) you sit :geek:

Great. The OLED color shift is now a common kn

Check the image posted right above your post - that is how the lagom test looks like on the C7. The red also moves with you if you move across the screen...

That image is taken sidelong and at way too near of a viewing distance to be fair. Cameras also have their own bias as was mentioned up front. I wouldn't sit closer than 40" to 48" (4') away viewing a 48" and as a gaming/media monitor it would be directly viewed from that viewing perspective.

That's the exact monitor that I had as my primary that has now been relegated to secondary. It's black is laughably bright side by side with the OLED. Like, it looks like I have the display set to full range and the GPU set to limited range so the display is displaying black as 16-16-16 in comparison. It's motion clarity is far worse.

Yes it even looks pale compared to the 43" on either side of it because they are 4200:1 and 6100:1 contrast 60hz VA TVs with the accompanying black depths while the 32" LG gk850g is lucky to get near 3000:1. Still way better than non-fald TN and IPS edge lit 860:1 to 1000:1 contrast and accompanying weak black depths for now. These oleds are in a league of their own all being inf:1 since they can be turned down and off per pixel.



I just watched the linus vid on a 5120x1440 samsung Odyssey G9 260Hz curved gaming display which wasn't even hdmi 2.1 capable (dp 1.4), has 8bit rgb, 1152 zone FALD and cost around $1600. FALD helps but it won't be per pixel "off oled black and infinite:1 contrast ratio. It's definitely wide but it's still a belt at only ~ 13 tall, like two 27" 16:9 monitors side by side. A FALD will be trying to balance "dim halos" and "glow halos" in their limited humber of zones which has it's own trade-offs in the end result. With the dim/glow zone balancing they aren't capable of hitting their peak HDR color volume / color-brightness % windows that they are spec'd to be all of the time and they will lose some detail in colors and detail in blacks throughout scenes. . I'd still consider a FALD or ULED for my living room tv someday since I have direct sunlight heat concerns vs running an oled with it's back to my picture window, but I am not really intersted in ~13" tall pc monitors without hdmi 2.1 (or dp 2.0) at very high prices anymore.
 
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MistaSparkul

[H]ard|Gawd
Joined
Jul 5, 2012
Messages
1,622
48" is still just too much for me. I've tried a 40" TV before and that size was almost perfect, if LG ever makes a 40" then that's when I'll definitely start using it as a monitor.
 

Azuel

n00b
Joined
Jul 9, 2020
Messages
2
Just got mine the other day. Awesome monitor. I've only run into two particularly annoying problems: it doesn't turn back on after Windows puts it to sleep, and I can't seem to get anything other than stereo sound through it via ARC. Still haven't figured out whether there's a good solution to the second one - dunno if that's an LG-side issue, GPU/Nvidia, or something else. For the sleep thing, I don't know what others are doing, but I'm currently using this hacky python script I cobbled together to wake it up via Wake-on-Lan when keyboard/mouse activity occurs. Figured I'd post it on the off chance someone else finds it useful, or has a better way to get the monitor to turn back on on its own.

Python:
from ctypes import Structure, windll, c_uint, sizeof, byref
from wakeonlan import send_magic_packet
import time

class LASTINPUTINFO(Structure):
    _fields_ = [
        ('cbSize', c_uint),
        ('dwTime', c_uint),
    ]

def get_idle_duration():
    lastInputInfo = LASTINPUTINFO()
    lastInputInfo.cbSize = sizeof(lastInputInfo)
    windll.user32.GetLastInputInfo(byref(lastInputInfo))
    millis = windll.kernel32.GetTickCount() - lastInputInfo.dwTime
    return millis / 1000.0

wasIdle = False
while 1:
    time.sleep(1)
    idleTime = get_idle_duration()
    if idleTime > 30:
        if not wasIdle:
            print("Wasn't idle, idle now for " + str(idleTime))
        wasIdle = True
    else:
        if wasIdle:
            print("Was idle, no longer")
            send_magic_packet('64.95.6c.de.c2.2d', ip_address='192.168.1.255')
        wasIdle = False
 

MistaSparkul

[H]ard|Gawd
Joined
Jul 5, 2012
Messages
1,622
Your choices are wait another 3-5 more years, or move the lg 48 back one foot and be satisfied today.

Eh? I'm totally satisfied with the LG. I don't think my posts on it here ever made it seem like I was disappointed in it in any way, it is by far the most AWESOME gaming display I have feasted my eyes on to date, bar none. I just prefer to use the X27 as my monitor for doing desktop thingies.
 

tybert7

2[H]4U
Joined
Aug 23, 2007
Messages
2,745
Eh? I'm totally satisfied with the LG. I don't think my posts on it here ever made it seem like I was disappointed in it in any way, it is by far the most AWESOME gaming display I have feasted my eyes on to date, bar none. I just prefer to use the X27 as my monitor for doing desktop thingies.


I just never understand the desire to keep a display small. If nothing other than immersion. My limit is completely beyond my field of view where I can no longer adjust distance enough to compensate.

So I would keep climbing higher at home until I got to this point

Prysm-display-wall-product-promo-image.jpg

Up to the corner of the ceiling, down to the floor. In fact, wrap all around the walls and the ceiling. Before we get there I'm sure VR will give cheaper solutions, but the desire for smaller less immersive displays is something I just cannot understand outside specific use cases where smaller gives a tangible advantage (like say, a competitive first person shooter where immersion takes a back seat for some to seeing everything more easily)
 

Lateralus

More [H]uman than Human
Joined
Aug 7, 2004
Messages
16,163
I’m with you as far as being immersed in a game or movie, but for general use I typically work in a ~32” window (or multiple windows as needed). I don’t need to be immersed in an Excel spreadsheet. :) and to his point, a smaller 4K would definitely provide the benefit of sharper text.

I can see the use case for a smaller monitor; I just have no real desire to use one personally when the 48” or 55” lets me do both and I’m perfectly happy with the text that it renders.
 

MistaSparkul

[H]ard|Gawd
Joined
Jul 5, 2012
Messages
1,622
Yeah that's kinda the thing, while I would love to have one of the 77" OLED, I wouldn't want it to be 4k. At that size I'd want the 8k resolution but of course we are just barely getting started with 4k120Hz so 8k120Hz is gonna be a long ways off. Yes yes I know people are gonna start talking about how you don't sit the same distance to a 77" as you would a 48" well look this is just my own personal preference: If I'm going to have a bigger screen then I want a higher resolution to go with that bigger screen, not just sit further away and be happy with it. Same reason why people refuse to use 1080p on a 32" monitor but would happily use it on a 24" despite the whole sitting further argument. So this is why at the moment I'm totally happy with a 48" 4k for now and eventually in the future once 8k120Hz becomes viable then yes I will set my sights on a 77" OLED doing 8k120Hz.
 
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NukeDukem

2[H]4U
Joined
Feb 15, 2011
Messages
2,426
Yeah my main gaming display is a 1440p LG GK850G VA right now for the black levels...

I thought the 850G was great after coming from an IPS. Now I keep her as a side monitor in portrait. Black levels and contrast are nice and it makes an acceptable companion for the OLED. It was a great gaming monitor for a couple of years while I waited for an appropriate 4k120 "BFGD".

Kudos to LG for putting out some great products and pushing the envelope on PC gamer displays.
 
Joined
Jul 25, 2012
Messages
901
Going to take the rather painful step of reorganizing my desk around the OLED and testing it out properly. Will have to use the side 27" ones in portrait to make it workable. One a bright note 'isf dark room' colors seem pretty good and match my color calibrated sRGB monitors well.

Does anyone know if the XRite i1 Pro and accompanying software will work to calibrate this for desktop use and may be even HDR? TV calibration always seemed much more involved than monitor calibration one reason for my hesitation.
 
Joined
Oct 5, 2013
Messages
34
I took a quick shot of my 65" C7 while on a gray background. I was at about a 45 degree angle and maybe 3ft away. If I were to walk left across the screen, the "red" would move with me. From 6-7' away and centered, it's far more difficult to perceive.

My C9 doesn't look as nearly as bad as the C7, and the camera makes things more pronounced than I see with my eyes. I find it hard to imagine anyone being bothered by it in normal situations...I hadn't even noticed it.

View attachment 260286

Thanks!....now I notice that too on the cx48, now can un see....ignorance is bliss.....
 

madpistol

Limp Gawd
Joined
May 17, 2020
Messages
465
If you really want to show off what this screen can do, Detroit: Become Human. It's simply staggering in quality. I also think it performs amazingly well at 4K on cards, I played on a single 1080 (non-TI) and it was smooth and beautiful.

Borderlands 3 is another amazing title, especially with HDR. The neon lights and explosions just pop.
 

SoCali

Limp Gawd
Joined
Jun 29, 2020
Messages
164
I dunno why ISF dark defaults brightness to 25 instead of the default 50. I'm not talking about OLED light but the actual brightness setting that you should basically never touch.
 
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