27" monitor recommendation to pair with 5090

Some more thoughts after a few further days with the PG27UCDM.

When using the monitor for work it looked outstanding. Just made it look lovely and slick even though it’s just slack and documents.

I was struggling with the proximity sensor though - the monitor was turning off whilst I was on calls… then it turned off when I was playing a game, which was concerning - I was a bit worried it was faulty tbh. However, Yesterday I hooked it up back to my main PC and I couldn’t replicate the problem - was working perfectly - so I’m really not sure what happened. I’ll keep an eye on it. Maybe I just wasn’t sat in front of it, or something equally daft!

Playing around with some ‘dark games’, albeit not for very long, I still haven’t encountered more any VRR flickering whilst ‘in game’. My perception is that this is a non-issue.

Here’s a snap of me playing Doom (2016) on the right next to an IPS monitor that’s completely turned off:

JoGI0yj.jpeg


^ I think this really shows off how fancy the OLED are… the blacks are darker than the ‘glow’ on the IPS screen. Crazy! And again, no VRR flicker.

I've taken some more snaps with 'windows open' to try and better show the differences with the IPS monitor and the purple tint ( @Spikey ):

Both off.
r7bEdYo.jpeg


Both on (lockscreen):
ssTA0Oo.jpeg

LvmiFvC.jpeg


More indicative of actual use:
4qUSi6M.jpeg


Across all the photos, the purple is slightly exaggerated by the camera (much like how most people couldn't really see the Northern Lights vividly in the UK last year without their cameras making all the colours 'pop').

On that last photo, I could barely see it with my own eyes. I'm using the monitor right now to post and I have the same windows etc. up and I can't really see it at all - the camera definitely exaggerates it.

So long as you're not in a super bright room, don't have overhead lighting and aren't facing it outside, the reflections and 'purple tint' are non issues (IMHO).
 
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Thanks for providing more updates @Nitefly
So far, based on everything you've said and shown, I think I'm going to be happy with it when it arrives.

Found out my bonus from work this week too and don't feel bad about spending so much on the monitor (I'll ignore the expense of the 5090 as that is in the past now lol).
 
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And yet more updates!

Yesterday I struggled with the proximity sensor again. I have issues with my monitor going to sleep via windows because of a ‘human interphase driver’ that autoloads from my speakers (… yes, really) so I’ve really enjoyed using it… when it works. Lots of peace of mind for avoiding burn in.

From the photos, you can imagine how good this is for my set up. By just wheeling over slightly, the monitor turns on. Wheel over to the work monitors, OLED turns off. Perfect.

Really not so good though when the screen goes dark mid-game because of a lack of movement. I was starting to think my unit was faulty and then I bumped into this thread on the ASUS forums of lots of people saying the same thing:


Aha - not just me then. Sounds like they may try and address it with firmware.

My reading of some of the comments from ASUS (“try wearing light clothing”) is that the sensor struggles in darker rooms… which is a little bit of a silly design because, obviously, this sort of panel demands a darker room.

The workaround is obvious: just deactivate it for any gaming session. But I am a little frustrated as it works so good when it works.

There’s no dead pixels etc. so I’m very reluctant to RMA / return. And the other 27” OLEDs don’t have this feature so…

Guess I’m waiting for the firmware update - fingers crossed.

It’s right for me to flag the cons as well as the pros!
 
And yet more updates!

Yesterday I struggled with the proximity sensor again. I have issues with my monitor going to sleep via windows because of a ‘human interphase driver’ that autoloads from my speakers (… yes, really) so I’ve really enjoyed using it… when it works. Lots of peace of mind for avoiding burn in.

From the photos, you can imagine how good this is for my set up. By just wheeling over slightly, the monitor turns on. Wheel over to the work monitors, OLED turns off. Perfect.

Really not so good though when the screen goes dark mid-game because of a lack of movement. I was starting to think my unit was faulty and then I bumped into this thread on the ASUS forums of lots of people saying the same thing:


Aha - not just me then. Sounds like they may try and address it with firmware.

My reading of some of the comments from ASUS (“try wearing light clothing”) is that the sensor struggles in darker rooms… which is a little bit of a silly design because, obviously, this sort of panel demands a darker room.

The workaround is obvious: just deactivate it for any gaming session. But I am a little frustrated as it works so good when it works.

There’s no dead pixels etc. so I’m very reluctant to RMA / return. And the other 27” OLEDs don’t have this feature so…

Guess I’m waiting for the firmware update - fingers crossed.

It’s right for me to flag the cons as well as the pros!
I'll probably just turn it off until they improve the feature, if it ends up being annoying. Hope they are able to fix the problems.

As for "wear light clothing", the vast majority of t-shirts I wear are band t-shirts from gigs I've been to. I'd say 95% of those are black t-shirts (I've started buying different colours for some variety lol).
 
@Jasseh yup - it’s not the end of the world but it really is great when it does work so it’s just disappointing to turn it off! Fingers crossed it gets sorted.

I just added to that ASUS thread to share my thoughts. Some people were saying they were still getting infrequent black screens turning on and off so I’ll repeat here the PSA I gave on DSC:

As for some of the other comments, if your proximity sensor is turned off and you’re still getting black screens, two possibilities. First, the power connector and plug was a little loose for me when I first plugged in… and I realised I hadn’t pushed it in all the way.

Secondly, DSC (display stream compression) may be the culprit - you can turn this off in the monitor settings. With it on, windows can auto choose the level of compression that is applied… causing the monitors to turn on and off - this issue is exacerbated by cable bandwidth problems. I have encountered this on a 4K IPS monitor of mine which is advertised as 160hz but encounters black screen issues (occasionally black screen) unless set to 144hz - which I think avoids the compression switching behaviour that results in the black screens. It’s pretty much impossible to say for sure but I’m willing to bet that it’s the DSC. Unfortunately, it’s not possible to turn DSC off on that monitor.

If you do turn DSC off, you will be limited to 120hz at 4K connecting with a GPU via a display port (DP) 1.4 connector. The only way to get 240hz 4K without DSC enabled is to have a GPU which has a DP 2.1 output at UHBR 20 (i.e. 80gb/s).

Be warned: there are different versions of DP 2.1… you are not necessarily always getting the full UHBR 20. For example, the new AMD GPUs only output at UHBR 13.5 despite being DP 2.1. For now, you’ll need a 50 series Nvidia GPU to get 240hz 4K without DSC. As always, be very careful reviewing the specs of any card you buy (even the Nvidia ones).
 
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@Jasseh yup - it’s not the end of the world but it really is great when it does work so it’s just disappointing to turn it off! Fingers crossed it gets sorted.

I just added to that ASUS thread to share my thoughts. Some people were saying they were still getting infrequent black screens turning on and off so I’ll repeat here the PSA I gave on DSC:
I sometimes (rare) get black screen issues with my 4K monitor connected via DP (the one I'll be switching out for the ASUS one). I hadn't even considered that it could be DSC causing it. It only supports DP 1.2 and is 60 Hz though, so maybe not the same issue?
 
I sometimes (rare) get black screen issues with my 4K monitor connected via DP (the one I'll be switching out for the ASUS one). I hadn't even considered that it could be DSC causing it. It only supports DP 1.2 and is 60 Hz though, so maybe not the same issue?

It’s an absolute menace of an issue when it arises… not obvious at all. (Is it the monitor that’s broken? The cable? The GPU? A windows setting? Oh, wait… there is no windows setting to turn off DSC - grr)

If it is blipping on and off as if you are switching inputs (or alt tabbing out of a game with an Nvidia GPU - a longstanding Nvidia DSC bug) then, yup, it could well be DSC

You can quickly tell if DSC is enabled by looking at Nvidia control panel and seeing if the DSR scaling factor settings are available. They will be invisible (not available) if the monitor is outputting with DSC.

Encountering this issue before - and it causing such annoyance - is exactly why I’m pairing this monitor with a 5090 in due course :)

Both the 40 series Nvidia cards and most monitors (including even the PG32UCDM) do not have the full UHBR 20 (80gb/s) port.
 
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