Looking to buy an OLED display. some questions.

[l3gi0n]

I am looking at LG 48GQ900-B which is a "monitor":

- 4K OLED 48" 138Hz.
- 16:9
- DisplayPort 1.4
- HDMI 2.1
- G-Sync compatible (Nvidia Certified)
- FreeSync Premium

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Questions:

- Have I picked a good OLED display ? (my requirements are: it should be 16:9 and 45"+). Should I look into some OLED TVs ? or is this a good enough display ?

- Can VRR and HDR be turned on at the same time on this monitor ?

- The VRR through the DisplayPort is VESA adaptive Sync and through the HDMI it is HDMI Forum VRR adaptive sync. Nvidia cards are compatible with both. Will I get G-sync through both the DisplayPort and HDMI ? if so, Will the VRR performance be identical through the DisplayPort and HDMI ?

- It does not have BFI, is this a problem ?

- It supports 4k at 138Hz through the DisplayPort 1.4 with DSC. do all OLED panels use DSC ? Does using DSC affect the picture quality ?

[Chief Blur Buster]

Short answers:

- The 48" OLED panel is used in both TVs and monitors, and produce pretty similar quality.
- I believe so (if the firmware supports it). I don't have this specific display.
- It depends on the NVIDIA GPU. On the latest, "G-SYNC Compatible" is synonymous with VESA Adaptive Sync and HDM/I Forum VRR.
- Depends on your priorities about flicker-based motion blur reduction versus framerate-based motion blur reduction.
- No, not all OLEDs have DSC.

[l3gi0n]

- It depends on the NVIDIA GPU. On the latest, "G-SYNC Compatible" is synonymous with VESA Adaptive Sync and HDM/I Forum VRR.
- Depends on your priorities about flicker-based motion blur reduction versus framerate-based motion blur reduction.
- No, not all OLEDs have DSC.

- So G-sync works through both DP and HDMI ?
- Can BFI be added through a firmware update ?
- Can the max brightness of the TV be increased through a firmware update ?
- At (4K, 120hz) there is no DSC through the DP, but at (4k, 138hz) DSC is used through the DP (according to the manual). is my understanding true ?
- Should I be concerned that DSC is used ? Does DSC degrade picture quality ?

[Chief Blur Buster]

- So G-sync works through both DP and HDMI ?
- Can BFI be added through a firmware update ?
- Can the max brightness of the TV be increased through a firmware update ?
- At (4K, 120hz) there is no DSC through the DP, but at (4k, 138hz) DSC is used through the DP (according to the manual). is my understanding true ?
- Should I be concerned that DSC is used ? Does DSC degrade picture quality ?

- There's more than 1 kind of G-SYNC, one that is not compatible with AMD/VESA/HDMI (but produces better quality in some cases), and one that is compatible (but sacrifices some features).
- Sometimes BFI can be added. It's up to the manufacturer. Also, BFI can be added as a software feature (e.g. www.testufo.com/blackframes)
- Sometimes it happens, but not always.
- I would need to research. It is common that due to different bandwidth availabilities, DSC is automatically used beyond a refresh rate on a specific port.
- Most people shouldn't be concerned about DSC image quality. Properly implemented DSC shouldn't have any noticeable lag or color problems, but there's reports of some inferior DSC implementations. I don't know if this panel has any specific issues.

[l3gi0n]

- There's more than 1 kind of G-SYNC, one that is not compatible with AMD/VESA/HDMI (but produces better quality in some cases), and one that is compatible (but sacrifices some features).

You mean displays that have the Nvidia chip(native G-sync) vs the ones that are just G-sync compatible(VRR is implemented in the DP or HDMI receiver chip) ?

- Most people shouldn't be concerned about DSC image quality. Properly implemented DSC shouldn't have any noticeable lag or color problems, but there's reports of some inferior DSC implementations. I don't know if this panel has any specific issues.

I have heard that DSC can disable DLDSR/DSR when using G-sync, is this true ?

Through DP(1.4) I can get (4K,138hz) but DSC is enabled in this mode. but in (4K, 120hz) mode DSC is deactivated through the DP ? I can also get (4k, 138hz) through HDMI(2.1) without DSC ?

Here is what's indicated in the manual:

https://ibb.co/M8QgtS8

[Supermodel_Evelynn]

According to Rtings reviews

https://www.rtings.com/monitor/reviews/lg/48gq900-b

This monitor you want to buy is actually some nasty matte coated monitor, I would never buy something like this when Glossy OLED exist in the LG TVs

Matte coating is like smearing Vaseline mix with pig sh!t all over your OLED, why would you do that?

[l3gi0n]

- TVs are more expensive.
- You need a 3rd party program to make the TV turn off when you turn the PC off.
- TVs have a lot of confusing picture processing.
- I don't think Matte vs Glossy is a big deal....

[RealNC]

- TVs are more expensive.

Actually TVs are cheaper. 4K 42" OLED TV costs as much as 27" 1440p OLED monitor. For the money of a 32" 4K monitor you can instead get a 42" 120Hz 4K TV. And sometimes the TV is cheaper. LG C4 here costs 1200€. It's 42" 120Hz 4K. A 32" 4K OLED monitor is typically 1400€ (1700€ for the top models.)

If 42" 4K is what you actually want, TVs make more sense. But if you're like me who doesn't want a 42" display right in front of their face, then a monitor makes way more sense, even though it's more expensive.

[l3gi0n]

Actually TVs are cheaper. 4K 42" OLED TV costs as much as 27" 1440p OLED monitor. For the money of a 32" 4K monitor you can instead get a 42" 120Hz 4K TV. And sometimes the TV is cheaper. LG C4 here costs 1200€. It's 42" 120Hz 4K. A 32" 4K OLED monitor is typically 1400€ (1700€ for the top models.)

If 42" 4K is what you actually want, TVs make more sense. But if you're like me who doesn't want a 42" display right in front of their face, then a monitor makes way more sense, even though it's more expensive.

I want a 48" display.

After researching a bit, it seems like the LG and Samsung OLED TVs' picture quality are way better than the monitor I mentioned in the OP.

But I have some concerns:

- Using a TV as a monitor could cause problems when you put the computer to sleep or wake up from sleep ?
- The board logo and the BIOS menu do not appear on the TV ?