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Acer KG251Q monitor review — FreeSync for cheap
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Acer KG251Q monitor review — FreeSync for cheap

by May 21, 2017

+ ZeroFrame design makes for good multi-monitor setups
+ VESA mount support
+ Easy to use OSD
+ Good quality TN panel
+ AMD FreeSync eliminates tearing
+ Affordable


- Fixed stand does not allow for tilt or height adjustments
- Poor color calibration out of the box
- 75Hz does not offer an experience that much different from 60Hz

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Bottom Line

The Acer KG251Q makes for a decent gaming monitor with its FreeSync support and 1ms response time without breaking the bank.

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Acer just recently announced its new gaming devices line up including a new gaming laptop, PC desktop and also two monitors with AMD Freesync technology. I’m not sure why Acer released a FreeSync monitor along with a PC gaming desktop that’s equipped with a NVIDIA GTX graphics card, which make the entire configuration pointless. I do hope they have an option with an AMD RX graphics card to harness the AMD FreeSync capabilities with their monitors. Talking about the monitors, I managed to obtain a unit of the Acer KG251Q for myself. A 24.5″ monitor with some nice numbers on paper, and most importantly, AMD FreeSync, without costing that much more than a basic monitor. Sounds too good to be true? Let’s see if it is.


Acer KG251Q monitor review — FreeSync for cheap 22

The Acer KG251Q comes in a brown box with a simple design on it. It has similar images on the front and the back of the box. Acer highlighted some features of this monitor, such as ZeroFrame, AMD FreeSync, 1ms response time and ComfyView.

Acer KG251Q monitor review — FreeSync for cheap 23

Similar stuff here on the side of the box. Again, we have the highlighted features and some of the specifications of the Acer KG251Q.

Acer KG251Q monitor review — FreeSync for cheap 24

The display is sandwiched between two Styrofoam in order to protect it from any damages. Embedded in the Styrofoam we have all the necessary parts and accessories for the monitor.

Acer KG251Q monitor review — FreeSync for cheap 25

We get one VGA cable, one HDMI cable, one power cable and some of the usual documentations.

Acer KG251Q monitor review — FreeSync for cheap 26

Acer KG251Q monitor review — FreeSync for cheap 27

The monitor base is divided into two parts, the feet and neck which attaches to the monitor are separate pieces. Assembling it was pretty easy as it’s tool-less. However it is highly recommended to tighten it with a screwdriver.


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The unit we have here is the 24.5″ variant. From the front, the design is pretty simple with only the Acer logo at the center of the lower bezel.

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Acer KG251Q comes with Acer’s ZeroFrame, which is Acer’s fancy moniker for thin bezels. It promises seamless visual when configured in multi-monitor setups. Anyone who are looking a thin bezel monitor for he/she driving simulator, Acer KG251Q is one of the option.

Acer KG251Q monitor review — FreeSync for cheap 30

Acer KG251Q has six physical buttons and the rightmost one is the on/off button. When the display is turned on, it has a small blue indicator LED beside the on/off button.

Acer KG251Q monitor review — FreeSync for cheap 31

Acer KG251Q monitor review — FreeSync for cheap 32

The back of the monitor is plain, with a sandblasted plastic finish. The four holes here are VESA mounting points. This promises more flexibility with this monitor, especially if you want to build a custom triple monitor setup with a third-party stand.

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The only form of embellishment on the back of the monitor is the Acer logo at the top right of the monitor.

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Acer KG251Q monitor review — FreeSync for cheap 35

For connectivity, Acer KG251Q has two HDMI port and a VGA port. The only input that supports AMD Freesync is the HDMI port. If you get this monitor and use the VGA connection, then it beats the purpose of having a FreeSync monitor in the first place.

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Let’s take a look at the side view of Acer KG251Q. For a modern display Acer KG251Q can be considered rather thick since it still uses internal power circuit. In term of adjustment, the Acer KG251Q cannot be adjusted for either tilt or the height.


Acer KG251Q monitor review — FreeSync for cheap 37

User Experience

From the specifications table above, aside from the AMD Freesync, the 1ms response rate, Adaptive Sync and 75Hz refresh did pique my interest. With these specifications, this monitor should be able to eliminate any blurring or ghosting effects you might get from lesser monitors, or at least theoretically.

Acer KG251Q monitor review — FreeSync for cheap 38

Once I connected the monitor to our Pokde benchrig, along with an AMD Radeon R7 360 through HDMI, I immediately found something that was not to my liking. The monitor isn’t properly calibrated from the factory and it required some manual adjustments to fix it.  Although I dislike its default color profile, I am still glad that Acer allows you to adjust it to your liking through the OSD. Overall the OSD is easy to navigate. For the color setting, I turn on the Bluelight filter, Set the brightness to 80, contrast at 50, turned off the black boost, ACM and super sharpness, and last but not least turned on the sRGB color.

After manually adjusting its color profile, I’m quite surprised by its color quality. It actually made me wonder whether this is really a TN panel. As we know, TN panels will generally suffer from color shifts when it view it from any angle aside from exactly perpendicular to the display. But with the Acer KG251Q, I don’t see much of that happening, with the color still remaining the same at most normal angles. Good job Acer, for using a high-quality TN panel here in this affordable monitor!

Acer KG251Q monitor review — FreeSync for cheap 39

Acer KG251Q monitor review — FreeSync for cheap 40

Acer KG251Q monitor review — FreeSync for cheap 41

Before you run any games with Acer KG251Q, you must first change the refresh rate in your OS to 75Hz manually, otherwise the monitor defaults to 60Hz. You can read this tutorial here on how to change the refresh rate.

I’m specifically using the AMD R7 360 in order to get a better idea of what AMD FreeSync technology does. First I start with some DOTA2 game, which was quite pointless since the R7 360 still managed to get frame rates averaging around 70 in games.

Before I switch the game to Battlefield 1, I did read on some forum that some of them are having issue with AMD FreeSync. One of the most serious case is severe flickering when enabling AMD FreeSync. With that in mind, let’s dive into multiplayer at 1080p Ultra settings and Freesync enabled. The result was spectacular, no screen tearing or flicker is detected even though the R7 360 barely pushes 35 fps on average. After several rounds of game, I quit Battlefield 1 and now I disabled Freesync. It was not a pretty sight. There is not ghosting and blur detected but the game is laggy and I noticed some micro screen tearing.

Last but not least, I played Dirt Rally. This game is quite graphically intensive so I need to turn off the AA for better frame rate at the highest graphics setting. Same result as I get when playing Battlefield 1, the experience is much smoother with FreeSync turned on.


In term of specifications, Acer KG251Q is a pretty decent monitor for gaming and multimedia purposes. Still, if your main uses for the display are going to need really accurate colors, IPS panels are still the way to go. Speaking of panel quality, I’m quite surprised by the color reproduction of the TN panels nowadays but still it’s not as great as an IPS panel. The only disappointment with Acer KG251Q is its fixed design with no adjustments for either tilt of height.

Playing at 75Hz doesn’t make that big a different when compare to 60Hz. I am guy who prefers to play with V-sync on or when running with a NVIDIA graphics card, Fast Sync. If  really want a monitor with AMD Freesync enabled, I would definitely throw a little more money for the Acer KG240A, which comes with a 144Hz refresh rate. I had experienced 120Hz, 144Hz and 165Hz monitors and the motion on those monitors with refresh rates north of 100Hz is way more fluid.

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When enabling AMD Freesync, the monitor did not suffer from any flickering that some users reported in the forums. But I can say I am less interested with the current AMD FreeSync, as AMD FreeSync 2 is just beyond the horizon, and promises improvement and most importantly, support for HDR content.

Priced at RM659, Acer KG251Q is backed by three-year Acer warranty. Taking everything into account, I award it our Silver Pokdeward.

About The Author
Muhammad Firdaus
I love technology, so I love AMD.
  • Rodney Fultz
    July 2, 2017 at 4:54 am

    Thanks for taking the time to review the Acer KG251Q i bought one today. I was looking for a cheap free sync monitor and this will work nicely

  • ateng
    July 17, 2017 at 5:17 pm

    bro how about if i use this monitor for ps4? is it considered an overkill or just okay? i am using this specifically for fps games.


  • Mahd Sani
    August 16, 2017 at 8:10 am

    hey dude can you tell me how to make the monitor 75Hz? I just got it today.

  • Fahimie
    August 18, 2017 at 11:41 pm

    bro..if u turn on the srgb..the bluelight will auto off..how u manage ur colour?

    • August 19, 2017 at 8:04 pm

      If you turn on sRGB, the bluelight filter will turn off automatically.. When you turn on bluelight filter, the sRGB will turn off.. That basically :)

    • August 19, 2017 at 8:09 pm

      Which can be confirmed that it was a typo made by the writer.. Apologies on behalf :)

      But bluelight and sRGB cannot indeed go hand in hand in the first place.. Because that’s the purpose of bluelight filter; to reduce the blue signals for lesser radiation and that will never give the “B” properly in the sRGB ;D

  • Dominik Sorges
    December 23, 2017 at 3:00 am

    hello, i bought this monitor after reading your review of it, since its basically nearly the only review. So i got a little problem. I have really strong ghosting. I read that this can happen due to the overdrive function. In the menu, its set to normal, but i cant set it to off, because there are no arrows to navigate lol.. in the manuals they show that u can put it off, but i simply cant, may u help me? :s greetings from germany

    • Vyncent Chan
      December 23, 2017 at 7:54 pm

      Hi, on our unit we are unable to set overdrive to anything other than normal as well. We would advise you to send your unit to a service center to have it checked out

  • Dan Davies
    December 29, 2017 at 2:27 am

    I’ve bought this monitor and was also instantly disappointed with the colour. I’ve been searching the net since buying it for a few weeks and not seen any information anywhere on suggestion for calibrating this monitor. I finally got pointed in the direction of this site and am now super happy with the monitor – although your suggestion on colour profile doesnt work.

    As soon as you select sRGB on, not only does the blue light filter get removed but so does the brightness and contrast settings – for me they go from the recommended 80 (brightness) and 50 (contrast) to 30 (brightness) and 50 contrast. If I try and chance these again, the sRGB gets turned off.

    Is this normal? Anyway, it’s looks millions better now even at 30 brightness and 50 contrast but just wanted to check it was how you have it?

    • Vyncent Chan
      December 29, 2017 at 12:53 pm

      Yeah it is normal for sRGB mode to lock the contrast and brightness settings as it is supposed to deliver a more accurate representation of the colors :)

  • January 28, 2018 at 3:12 am

    It’s hard to see TN panels having so good viewing angles like this one. Even the most expensive one’s shift colours.

  • Winchester
    February 20, 2018 at 9:28 pm

    Hey,I was looking at this monitor for quite sometime now and luckily i’ve found your review!thanks for the brief explanation on the monitor!but i do have a question tho,i’m using an old gpu which is an hd7850.the only support that i can get from enabling the freesync is just for watching movie if i’m not mistaken.so will it do me justice if i buy this monitor and use the hdmi i/o without turning on the freesync?i play mainly FPS titles and afraid that i’ll get so much ghosting when gaming on it.btw i prefer turning on v-sync.will it be a wise choice to buy this monitor?i’m badly in need of a new one.


    • Vyncent Chan
      February 20, 2018 at 10:35 pm

      Your card won’t support FreeSync, but you won’t get as much ghosting on this monitor as it features a 75 Hz refresh rate. You can turn on V-Sync regardless of FreeSync support. It is an affordable choice for a 75 Hz monitor, but whether it is a wise choice, I can’t answer that for you. Hope I helped!

  • Helen Lingford-Hughes
    April 5, 2018 at 9:18 pm

    Hey, I have been looking for this monitor and have read many reviews. It appears that when I look on amazon for the exact same model there is no ‘ZeroFrame’. Can you please send or write a link to the exact place you got your model from.


    • Vyncent Chan
      April 5, 2018 at 9:27 pm

      Hi we got it as a giveaway item at Acer’s event. The item sold on Lazada here lists ZeroFrame in its specifications too

  • SCC
    April 28, 2018 at 5:28 am

    I purchased this monitor recently, and like many others, feel a bit shafted. It suffers from TERRIBLE inverse ghosting due to the “over drive” feature. It is stuck on NORMAL and cannot be turned off. I’ve searched all over the internet, and spent hours on the phone with Acer level 2 techs… only to conclude that no, you cannot turn off the over drive. Even though there is clearly an option for it in the OSD (lol).

    The 75hz refresh rate is nice, but it has nothing to do with ghosting. Thats all about response time. And 1ms shouldn’t need any kind of over drive. Thats why it over shoots the pixels and you get inverse ghosting.

    This monitor has everything going for it, but the ungodly amount of inverse ghosting completely ruins it. I would stay FAR FAR away from this. Sorry to spoil your review… but for any real gamer, this monitor is garbage. How did you not notice the overshooting during your tests?

    • Vyncent Chan
      April 28, 2018 at 12:50 pm

      Hi, you may have a faulty panel. Have you taken it back to the service center? Because we encountered nothing of the sort.

      • SCC
        April 29, 2018 at 3:16 am

        The panel is 100% working as intended. I recently hooked it up to an nvidia gpu, and over drive could be changed. Setting it to extreme causes very very bad inverse ghosting. Setting it to off fixes this completely. While connected to any amd gpu though, over drive is set to normal by default and cannot be changed. I assume this has something to do with freesync via hdmi. Perhaps my eyes are more sensitive to these things than others… but it definitely suffers from inverse ghosting. I’m not the only person noticing this. Gamers need to be aware of the issue with this monitor and stay away from it!

  • May 6, 2018 at 3:03 am

    I think this is one of the best budget gaming monitors with FreeSync. I also like the stand, it is stylish and looks pretty solid

    August 23, 2018 at 9:19 pm

    You can set it on 144hz with a DisplayPort 1.2 Cable :)

  • Ricardo Guevara
    August 23, 2018 at 9:21 pm

    You can set it on 144hz with a DisplayPort 1.2 cable. :) Great monitor for 144hz gaming

  • Yesheis
    October 14, 2018 at 4:02 pm

    Is it only 75hz not 144hz? Lack of DP or DVI doubt me it have 144Hz. Some Indonesian onlineshop state it can achieve 144Hz, what a scam.

    • Yesheis
      October 14, 2018 at 4:23 pm

      I took a bit look on acer website, so there are many type for this monitor under KG251Q series, like biix, bmiix, Dbmiipx. So yeah they have different specs. Cmiiw.

      • Vyncent Chan
        October 15, 2018 at 11:31 am

        Hi, we wouldn’t be surprised given that Acer does release many variants of a single design. Even the ED273 comes in a 75 Hz variant (ED273) and also a 144 Hz variant (ED273A). So it is entirely possible that Acer is offering a 144 Hz variant in Indonesia, provided that there is a DP port. HDMI 1.4 can only deliver 1080p at 120 Hz :)

  • December 7, 2018 at 7:15 am

    Great review! I’m trying to fine tune the calibration on mine. How did you adjust the color? Thanks!

    • Vyncent Chan
      December 7, 2018 at 4:21 pm

      Hi, it was done via the monitor’s OSD. We apologize for being unable to provide any additional instructions though because we no longer have the monitor in our inventory.

  • January 18, 2019 at 10:00 am

    Hi. How do you enable Freesynch manually? In the Information, it is read as More:NORMAL. Any idea how to set that into FREESYNC?

  • Faizaan Abbas
    July 17, 2019 at 4:07 am

    Have you tried overclocking the refresh rate on this monitor and if you have har far did it go and would you reccomend it

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