PG27AQN 240Hz vs 360Hz ULMB2

[Depo]

Hello Everyone,

I'm after some advice which could sway a purchase decision of the PG27AQN.

Can you run this monitor at 240Hz with ULMB2 enabled? If so, will it affect the performance (Input lag/Response times) when compared to its advertised 360Hz mode. I play a variety of titles some of which just arent going to reach a consistant 360Hz to 360fps ratio, therefore I'm after seeing what my options are with this monitor. I can't find this out anywhere unfortunately.

Any help appreciated.

Depo.

[jorimt]

Can you run this monitor at 240Hz with ULMB2 enabled?

RTINGS included this information in their review:
https://www.rtings.com/monitor/reviews/ ... #test_4262

The ASUS PG27AQN received a firmware update in May 2023 to support NVIDIA's ULMB 2, which is their implementation of a backlight strobing feature. It only works with fixed 120Hz, 144Hz, 240Hz, and 360Hz signals, and you can't use VRR at the same time. You can adjust the flicker somewhat to your liking, but using the lowest setting of '10' makes the screen really dim.

--------

If so, will it affect the performance (Input lag/Response times) when compared to its advertised 360Hz mode.

The lower the fixed the refresh rate, the less the crosstalk with strobing, typically, which seems to also be the case here going by their captures.

Otherwise, there shouldn't be a difference (including overdrive performance) other than the fact that 240Hz has 120 less refreshes per second than 360Hz, of course.

[Depo]

Thank you Jorimt appreciate the input. So just to confirm from what you said there appears to be no extra input delay or response time increase when using 240hz mode with ULMB2 besides the refresh rate?

I've read Chiefs posts about using monitors max frame rate but capping frame rate so for example using 360hz but capping at 240hz. Would this be possible witj ULMB2?

Thanks again.

[jorimt]

So just to confirm from what you said there appears to be no extra input delay or response time increase when using 240hz mode with ULMB2 besides the refresh rate?

Correct.

I've read Chiefs posts about using monitors max frame rate but capping frame rate so for example using 360hz but capping at 240hz. Would this be possible witj ULMB2?

If you're referring to QTF (Quick Frame Transport), unlikely, since the PG27AQN uses DSC to achieve 360Hz, which prevents creation of custom resolutions and like, at least with the most common methods (NVCP, etc). You could try CRU, I suppose.

[Depo]

Your a bundle of knowledge my friend, thanks again.

In your opinion, do you think the PG27AQN would still perform better at 240Hz with ULMB2 than say the PG27AQDM for competitive titles?

From a motion clarity perspective, and over all input delay perspective.

[jorimt]

In your opinion, do you think the PG27AQN would still perform better at 240Hz with ULMB2 than say the PG27AQDM for competitive titles?

From a motion clarity perspective, and over all input delay perspective.

PG27AQN ULMB2 vs. PG27AQDM, both at 240Hz would probably be splitting hairs where overall latency and effective motion clarity is concerned, even for pros, and could come down more to preference (LCD strobing vs. OLED increased contrast ratio with no crosstalk) than anything else.

[hart]

In your opinion, do you think the PG27AQN would still perform better at 240Hz with ULMB2 than say the PG27AQDM for competitive titles?

From a motion clarity perspective, and over all input delay perspective.

PG27AQN ULMB2 vs. PG27AQDM, both at 240Hz would probably be splitting hairs where overall latency and effective motion clarity is concerned, even for pros, and could come down more to preference (LCD strobing vs. OLED increased contrast ratio with no crosstalk) than anything else.

for me, after using different lg oled pannels (asus and lg) and also the AQN, its not even close, the AQN ulmb2 mops the floor with those oled pannels, they are not even close.

BUT, if you are just gonna play single player games or ocasionally some mp, the oled makes more sense. But if you are the kind of guy who puts 5000 hours on your competitive mp game, thats 95% of your use and you have the system to push games to 360fps at 1440p, the AQN is a no brainer, and on top of being much better, you can crank up the brightness and not to worry on long term burn in effect.

[jorimt]

the AQN ulmb2 mops the floor with those oled pannels, they are not even close.

MPRT, yes, GtG, no.

I was also answering the OP on 240Hz OLED non-strobed vs. 240Hz LCD ULMB2 specifically, not 240Hz OLED non-strobed vs. 360Hz LCD ULMB2.

[hart]

the AQN ulmb2 mops the floor with those oled pannels, they are not even close.

MPRT, yes, GtG, no.

I was also answering the OP on 240Hz OLED non-strobed vs. 240Hz LCD ULMB2 specifically, not 240Hz OLED non-strobed vs. 360Hz LCD ULMB2.

for me 240 ulmb 2 is stil way clearer than the oled

rtings images for example as their review was used previously, oled vs 240 ulmb2 at 50% pwm




sorry, maybe I'm understanding you wrong, just that I am interested in this as I had both asus now at home and I'm trying to decide which one is staying and I think the AQN is the better contender for now, specially in motion clarity side to side it's on another level

[jorimt]

for me 240 ulmb 2 is stil way clearer than the oled

rtings images for example as their review was used previously, oled vs 240 ulmb2 at 50% pwm

[...]

sorry, maybe I'm understanding you wrong, just that I am interested in this as I had both asus now at home and I'm trying to decide which one is staying and I think the AQN is the better contender for now, specially in motion clarity side to side it's on another level

What I see in those images is what I expect; the OLED has persistence blur due to non-strobed sample-and-hold, and the LCD has strobe crosstalk ghosting due to slower pixel response times.

You subjectively prefer the latter, and that's perfectly fine. There's no need for FOMO or justification of a purchase. Both are good, and both serve certain preferences. There isn't a single "right" answer in this case.