What is ELMB?

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What is ELMB

ELMB (Extreme Low Motion Blur) is Asus’ proprietary technology made to reduce eye tracking motion blur. It is a form of backlight strobing technology, made to eliminate any blur on the display by turning off the backlight of the monitor in between refreshes. Note that this technology can only be used at fixed framerates, such as 85Hz, 100Hz, 120Hz.


Modern displays, due to the way their technology works, suffer from ‘sample-and-hold’, meaning that frames are displayed until the frame refreshes again, i.e. the image is always ‘on’. Each pixel (which is what the image on the screen is made out of) takes a while to change in brightness and color though, even on monitors with the fastest response times possible. When fast moving objects move around the screen this can cause eye tracking motion blur, since the display cannot respond fast enough to accurately display the objects’ travel line.

Our eyes are tracking the fast moving object so fast that our eyes will be at a different position at the start of a frame vs. at the end of a frame. This causes what we know to be ‘eye tracking motion blur’.

The only way to combat eye tracking motion blur is by shortening the amount of time each frame is on screen. That’s done by (for example) producing higher refesh rate monitors, but also by what we call ‘backlight strobing’, i.e. turning the backlight off in between frame refreshes, thus shortening the amount of time that a frame is displayed even more.

Eye Tracking Motion Blur


ELMB is Asus’s own backlight strobing technology. Provided your PC can reliably output enough frames to match the rate at which ELMB is working it will greatly reduce the blur on the screen with minimal side effects. Not much info is provided on this technology by ASUS, but ELMB does work the way it’s advertised and essentially eliminates any motion blur, which can greatly improve ingame performance in fast paced games.

18 Comments on “What is ELMB?”

    1. ELMB doesn’t really add any sort of major input lag as far as we know. Most people on our staff prefer DyAc though.

    2. May I know why they choose DyAc instead of ELMB? If I compare ZOWIE XL2536 144Hz with DyAc and ASUS VG258QR 165Hz with ELMB, what would your stuff choose and which one is better? Please do let me know because I’m going to buy a monitor soon, thank you in advance. ( My choice for now is : ASUS VG258QR as it has higher refresh rate and lower respond time. )

    1. As far as we know you can’t run ELMB at 240 frames so we recommend going for 240 without ELMB if your setup can swing it.

    2. Thnx for the great info about ELMB, cuz i was planning to buy Vg27AQL1A

      But im not sure what to choose between The new Asus TUF Vg27AQL1A or LG 27GL850-B??


  1. You sure about that? I’ve tested 240hz monitors and there is still a great deal of motion blur in effect when the camera is changing direction fast. In that case ELMB mode would be better? I’ve never tested ELMB before but if it removes blur its going to be amazing in games instead of hitting that 240Hz.

    1. Well, it depends on preferences mostly. Some people prefer the feeling of very high framerates while others prefer a blurless experience.

  2. Hello

    Is this setting recommended for cs go are not?

    If you maybe know ASCR and adaptive-sync or named freesync is also disabled for best performance right?
    Lots of thanks

    BR Jerozh

    1. We tend not to use this for games such as CSGO since it’s relatively easy to get a high amount of frames and motion blur is reduced to a minimum on high refresh rate panels. That said: you can always experiment with it as some people do like to have it on.

  3. Should I use ELMB it for Fast paced competitive FPS games. I’m using the Asus TUF VG259Q 144hz monitor.

    1. It depends, really. If you are finding that there’s too much blur you can always try to turn it on but otherwise you can leave it off since it can have an effect on the brightness and picture quality.

  4. Hi,should i turn ELMB on ehile playing csgo and valorant,and does it add input lag at all,and does colors become diffrent when it’s on.
    Sry for bag english.

    1. It depends. Some like it off while others prefer to have it on. It can introduce a tiny bit of input lag but that’s mostly not noticeable. Colors should be pretty much the same.

  5. I would gain performance in Fortnite with 120hz and ELMB enabled or I would gain more performance in Fortnite with 165hz with ELMB disabled?

    1. If you ask us higher framerates are always better unless screen tearing is absolutely unbearable, but it kind of depends on what you prefer. We’d choose a framerate of 165Hz without ELMB over 120 FPS with it enabled for competitive games.

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