Acer KG271A Review: Full HD 144Hz 1ms FreeSync Gaming Monitor

By November 14, 2017 No Comments

Acer KG271A


The Acer KG1 series consists of the lightning-fast 1ms TN panel gaming monitors. Confusingly, both the 144Hz and 75Hz versions are dubbed as the Acer KG271, but we refer to the 144Hz model as the Acer KG271A, short from its full name – the Acer KG271Abmidpx.

The Acer KG271A display is one of the most affordable 27-inch 1080p monitors with 144Hz refresh rate and quick 1ms response time. Moreover, it features a thin-bezel design and AMD FreeSync technology with a wide dynamic refresh rate range.

Image Quality

The first thing that may repulse certain people from getting the Acer KG271A is the fact that its Full HD 1920×1080 screen resolution is too low for its 27-inch screen size. This results in a low pixel density of 81.59 PPI (Pixels Per Inch) which makes the text and small icons appear smudgy and pixelated. An easy solution for this is to put the monitor a bit further away so the pixels won’t be as noticeable.

The second thing is the viewing angles (170° horizontally and 160° vertically) which make the image shift in color and contrast when it’s viewed from certain angles. This is a common drawback of the TN panels, so when you are watching a movie with your friends, you’ll have to tilt the screen to an angle everyone can comfortably watch at. While gaming, however, you won’t be affected at all by this issue.

The Acer KG271A TN panel offers 8-bit color support with 16.7 million colors, radiant 400-nits of peak brightness, advanced color settings, and a rapid 1ms response time speed. Colors aren’t as lively as they are on IPS or VA panels, but the response time is as fast as it can be which is more important for gaming anyway.

Overall, the picture quality is excellent but may require some getting used to for some users coming from smaller 24-inch monitors. The pixel-y aspect of the image is much less prominent once you run a video game or play a movie, then you won’t even notice that something is missing, especially if you sit a bit further from the screen.


The Acer KG271A gaming monitor provides you with a considerably smoother gameplay experience thanks to its 144Hz refresh rate. In comparison to the standard 60Hz monitors, the fast-paced FPS games become more intense and immersive at higher refresh rates. In fact, since the image refreshes more than twice as fast, you’ll have an advantage over your opponents.

The fluidity of 144Hz is complemented by the quick 1ms response time speed which eliminates motion blur and ghosting of the fast moving objects. Furthermore, the Acer KG271A input lag performance is top-notch with only 7ms at 144Hz.

To unlock the full potential of the monitor, you’ll need an AMD FreeSync-compatible graphics card which allows you to synchronize its frame rate to the Acer KG271A refresh rate. Consequently, the refresh rate becomes dynamic and eliminates screen tearing and stuttering while providing you with a more stable FPS (Frames Per Second) rate.

The Acer KG271A FreeSync range amounts to 30Hz-144Hz via the DisplayPort which is surprisingly generous. When you connect your card via the HDMI port, the FreeSync range is lower at 48Hz-144Hz. AMD’s LFC (Low Framerate Compensation) is supported meaning that even when your FPS rate suddenly drops, the LFC will help out with the performance.


The OSD (On-Screen Display) is easily navigated and user-friendly with plenty of adjustments available. The OSD buttons are placed on the bottom bezel and can be used to quickly swap between the input sources, adjust volume and brightness, and enter the OSD menu.

The main gaming features consist of the overdrive settings, custom aim points for better precision in FPS games, an FPS counter, and Black Boost feature which increases visibility in darker games by enhancing shadows. Other available adjustments include the low blue light filter, 6-axis color settings, and different gamma presets.

Design and Connectivity

Acer KG271A Amazon

The Acer KG271A 144Hz gaming monitor features a slim ZeroFrame design with a glossy finish and red accent on the stand. It has 100 x 100 VESA holes for mounting, but it’s tilt-only by -5, 15 degrees. The screen is coated with a matte finish which eliminates the annoying sunlight reflection and allows you to focus on gaming without distractions.

When it comes to connectivity, there’s an HDMI, a DisplayPort, and a DVI port. There are two 4W built-in speakers and an audio line-out port for the headphones.

Acer KG1 Gaming Monitor Series

The Acer KG271A price amounts to roughly $280 at the moment (November 2017). On Amazon, the 144Hz model is dubbed as the Acer KG271 Cbmidpx or Abmidpx depending on the region.

The new Acer KG1 2017 series consists of additional gaming monitors including the Acer KG281K with 4K resolution, the Acer KG271U 1440p display, and with Full HD resolution – the Acer KG251Q and the Acer KG271 bmiix.

All of these feature a 1ms TN panel and AMD FreeSync technology with 48-75Hz range. Additionally, the Acer KG221Q and the Acer KG241Q are available as budget gaming monitors.

Similar Monitors

For an extra $20, you may want to consider another new gaming monitor by Acer, the Acer ED273A – also with Full HD resolution, AMD FreeSync, and 144Hz refresh rate – but with a curved VA panel instead of the TN. It offers a more immersive gameplay with better image quality due to the higher contrast but has a slower response time speed which results in motion blur in fast-paced games.

Other 27-inch Full HD gaming monitors with 144Hz refresh rate such as the ViewSonic XG2701, the ASUS VG278Q, and the BenQ Zowie XL2720 cost an extra $50-$100 making the Acer KG271A the best choice for the money. An even cheaper alternative is an older Acer monitor which we reviewed, the Acer GN276HL with 144Hz, 1ms, and Nvidia 3D LightBoost.


The Acer KG271A 27-inch gaming monitor is ideal for those who play competitive games, have an AMD GPU, and would like a big screen without breaking the bank. It’s the perfect monitor for CS: GO and other FPS video games, but if you prefer better graphics over performance in competitive gaming, you may want to consider 1440p instead of 144Hz.

Acer KG271A Specifications
Screen Size27-inch
Resolution1920x1080 (Full HD)
Panel TypeTN
Aspect Ratio16:9 (Widescreen)
Refresh Rate144Hz
Response Time1ms (GtG)
Adaptive SyncFreeSync (30Hz-144Hz LFC Supported)
PortsDisplayPort 1.2, HDMI 2.0, DVI
Other PortsHeadphone Jack
Brightness400 cd/m2
Contrast Ratio1000:1 (Static)
Colors16.7 million (True 8-bit)
VESAYes (100x100mm)

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