240 Hz monitor at 120 Hz?

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Bamboo
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240 Hz monitor at 120 Hz?

Post by Bamboo » 21 Jan 2020, 12:30

Hi! :)

Can a good quality 240 Hz monitor perform better than a good quality 144 Hz monitor att 120 Hz, or is it just a waste?

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Chief Blur Buster
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Re: 240 Hz monitor at 120 Hz?

Post by Chief Blur Buster » 21 Jan 2020, 21:09

Depends on the parameters.
High Hz can still have benefits for lower fps.
It's not wasteful.

In some situations, on some models, some parameters may degrade (colors) while others improve (lag).

However, here are generalities:

(1) If you want to reduce input lag of lower framerates
Example: 120fps at 240Hz has lower lag than 120fps at 144Hz -- regardless of fixed-Hz or FreeSync / G-SYNC

(2) If you want to reduce strobe crosstalk (double-images) on motion blur reduction modes (ULMB, etc)
Example: 120Hz blur reduction modes on a 240Hz monitor has less crosstalk double-images than 120Hz blur reduction modes on 144Hz. Also, Blur Busters Approved monitors take maximum advantage of hertzroom to improve quality of motion blur reduction of lower Hz modes.

(3) If you want to reduce visibility of tearing
Example: 100fps VSYNC OFF at 240Hz (tearline 1/240sec visibility) has less visible tearing than 100fps VSYNC OFF at 144Hz (tearline 1/144sec visiblity)

(4) Wider VRR range that can capture your whole framerate fluctuation range
30fps-240fps G-SYNC/FreeSync range captures a bigger range of framerate fluctuations than a 48fps-144fps G-SYNC/FreeSync range. You have less side effects of below-min (LFC-mispredict stutter) and above-max (changes to fluidity/lag effects)

Also, 240Hz is now available in IPS and VA format too, it is no longer limited to TN.
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       To support Blur Busters:
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Bamboo
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Joined: 10 Jan 2020, 03:54

Re: 240 Hz monitor at 120 Hz?

Post by Bamboo » 26 Jan 2020, 11:16

Thank you for answering and for your interesting articles.

BlurBoss
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Joined: 17 Dec 2018, 13:52

Re: 240 Hz monitor at 120 Hz?

Post by BlurBoss » 28 Jan 2020, 03:34

I've hear numerous times that 120 Hz on 240 Hz worse overdrive and higher input lag. Is this true?
BenQ XL2546, i9-9900K @ 5.0 GHz, RTX 2080 Ti, 32GB (2 x 16GB) 3200 MHz CL14 RAM, Asrock Z390 Phantom Gaming-ITX/ac.

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Re: 240 Hz monitor at 120 Hz?

Post by Chief Blur Buster » 28 Jan 2020, 15:58

BlurBoss wrote:
28 Jan 2020, 03:34
I've hear numerous times that 120 Hz on 240 Hz worse overdrive and higher input lag. Is this true?
That can happen, yes. It depends on the model / panel.

Ideally, if you want 120fps on 240Hz, you should enable the 240Hz VRR mode. That's lower latency than running a 240Hz monitor at 120Hz on a fixed-scanrate 240Hz panel, unless you're doing workarounds at the signal level (large vertical totals / Quick Frame Transport) rather than the panel level.
Head of Blur Busters - BlurBusters.com | TestUFO.com | Follow @BlurBusters on Twitter

       To support Blur Busters:
       • Official List of Best Gaming Monitors
       • List of G-SYNC Monitors
       • List of FreeSync Monitors
       • List of Ultrawide Monitors

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