Acer KG251Q Jbmidpx 24.5" Black 2021

★★★★★ 4.5 (334)

A 165Hz refresh rate and a 0.6ms response time on its TN panel deliver the motion clarity essential for fast-paced shooters, while 400-nit brightness keeps the image visible in well-lit rooms. The zero-frame design and AMD FreeSync support create a seamless, tear-free experience ideal for multi-monitor setups. This monitor is best for competitive esports gamers who prioritize raw speed and responsiveness over color accuracy or viewing angles.

Screen 24.5"
Resolution 1920 x 1080
Panel TN
Refresh 165 Hz
response time ms 0.6000000238418579
adaptive sync FreeSync
Acer KG251Q Jbmidpx 24.5" Black 2021 monitor
54 Totaalscore
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Overzicht

The 30-Second Version

The Acer KG251Q is a 24.5-inch gaming monitor that prioritizes speed above all else. Its 165Hz refresh rate and 0.6ms response time are fantastic for competitive gaming, but the TN panel's poor colors and viewing angles are a major trade-off. It's a killer deal if you can find it under $150 and only care about esports performance.

Pros & Cons

Pluspunten

  • Blazing fast 165Hz refresh rate and 0.6ms response time 91st
  • Excellent value when found under $150 91st
  • 400-nit brightness is higher than most budget monitors 75th
  • Minimal ghosting and backlight bleed reported by users 72nd
  • Sturdy, stable stand even if it lacks adjustments

Minpunten

  • TN panel has poor color accuracy and narrow viewing angles
  • Out-of-box calibration is dim and cool, needs tweaking
  • Built-in 2W speakers are weak and tinny
  • Stand only tilts, no height or rotation adjustment
  • Display quality overall is a real letdown compared to IPS

Wat eigenaren vinden

The Word on the Street

4.5/5 (334 reviews)
👍 Buyers consistently praise the excellent price-to-performance ratio, noting the high refresh rate and sharp display make games feel great.
👍 Multiple owners report the build quality is sturdy with minimal ghosting and no dead pixels out of the box, making setup a breeze.
👎 A common complaint is that the built-in speakers are weak and the out-of-box calibration is too dim, requiring manual tweaking to look decent.

Hoe de mening van eigenaren in de loop van de tijd veranderde

Exclusief

Op basis van wanneer klanten hun reviews daadwerkelijk schreven - zo zie je of de eerste lof standhield.

De mening van eigenaren is in de loop van de tijd stabiel gebleven
85/100Onze AI-sentimentanalyselage betrouwbaarheid · 7 bronnen · mei 2026
1★2★3★4★5★Q1 '21: 5.0★ · 1 reviewQ2 '22: 5.0★ · 1 reviewQ4 '22: 3.5★ · 2 reviewsQ1 '23: 5.0★ · 1 reviewQ3 '24: 5.0★ · 1 reviewQ3 '25: 5.0★ · 1 review112111Q1 '21Q2 '22Q4 '22Q1 '23Q3 '24Q3 '25
Gem. beoordelingTevreden (4-5★)Ontevreden (1-2★)Balkhoogte = aantal reviews

Gebaseerd op 7 gedateerde klantreviews, gegroepeerd per kalenderkwartaal. Analyse per periode is in het Engels.

De feiten

Performance

In our database, this monitor's raw performance lands in the 91st percentile, and it's easy to see why. The 165Hz refresh rate over DisplayPort makes motion look buttery smooth in fast-paced shooters like Valorant or Overwatch. The 0.6ms response time is one of the best on the market for a TN panel, meaning you won't see distracting ghosting trailing behind moving targets. For competitive gamers, this is the kind of spec sheet that can actually give you a slight edge.

But that speed comes with the classic TN trade-off. The display quality itself sits in the 8th percentile, which is frankly disappointing. Colors look washed out compared to even a budget IPS panel, and the viewing angles are tight. If you shift in your chair, the image starts to look off. The out-of-box calibration is also a common pain point, with multiple owners reporting it's too dim and cool. You'll want to spend a few minutes tweaking the settings to get a decent picture.

Performance Percentiles

Color 71.7
Draagbaarheid 42.7
Display 7.9
Feature 24.5
User Sentiment 74.6
Ergonomic 35.7
Performance 91
Connectivity 56.2
Gebruikersoordeel 90.6

Specifications

Full Specifications

Display

Size 24.5"
Resolution 1920x1080 (Full HD)
Panel Type TN
Aspect Ratio 16:9
Curved No

Performance

Refresh Rate 165 Hz
Response Time 0.6
Adaptive Sync FreeSync

Color & HDR

Brightness 400 nits

Connectivity

HDMI Ports 1
DisplayPort 1
Speakers Yes

Ergonomics

Tilt Yes

Features

Webcam No
Touchscreen No
Weight 4.2 kg / 9.3 lbs

vs Competition

Stacked against something like the ASUS TUF Gaming VG27AQL5A, the Acer's weaknesses become obvious. The ASUS offers a larger 27-inch IPS panel with way better colors and a fully adjustable stand, but it costs significantly more. The LG UltraGear 27GX790A-B is another step up, with even faster refresh rates and better HDR support. If you're considering the Dell S2725QC, you're looking at a 4K office monitor that's in a completely different league for productivity but useless for high-refresh gaming.

The Acer's real competition is other budget TN panels. It holds its own with its 400-nit brightness and solid build quality, but the Gigabyte M Series M27UP SA shows what you can get if you save up a bit more: a 4K IPS panel with much better versatility. The HP OMEN 27qs G2 is another strong alternative if you want a bigger screen and better color without completely breaking the bank. Basically, the Acer wins on price and pure speed, but loses on everything else.

Spec Acer KG251Q Jbmidpx 24.5" MSI MAG 271QPX QD-OLED E2 LG UltraGear 27GX790A-B ASUS ROG Strix XG27AQDMGR Alienware AW-Series AW2725D Dell S2725QC
Screen Size 24.5 27 27 26.5 27 27
Resolution 1920 x 1080 2560 x 1440 2560 x 1440 2560 x 1440 2560 x 1440 3840 x 2160
Panel Type TN QD-OLED OLED OLED QD-OLED IPS
Refresh Rate 165 240 480 240 280 120
Response Time Ms 0.6000000238418579 0.029999999329447746 0.029999999329447746 0.029999999329447746 0.029999999329447746 8
Adaptive Sync FreeSync FreeSync Premium Pro FreeSync Premium Pro FreeSync Premium Pro FreeSync Premium Pro FreeSync Premium
Hdr - DisplayHDR True Black 400 DisplayHDR True Black 400 DisplayHDR 400 DisplayHDR 400 True Black HDR
Compare Compare Compare Compare Compare
Product ColorDraagbaarheidDisplayFeatureUser SentimentErgonomicPerformanceConnectivityGebruikersoordeel
Acer KG251Q Jbmidpx 24.5" 71.742.77.924.574.635.79156.290.6
MSI MAG 271QPX QD-OLED E2 Compare 99.263.579.387.395.691.998.484.999.4
LG UltraGear 27GX790A-B Compare 83.163.579.373.995.691.999.898.599.4
ASUS ROG Strix XG27AQDMGR Compare 99.872.278.673.9091.998.494.698.3
Alienware AW-Series AW2725D Compare 98.781.879.373.995.691.999.496.299.9
Dell S2725QC Compare 76.979.59073.995.691.945.989.995.4

Prijs

Value & Pricing

Pricing on this monitor is all over the place. We've tracked it from $115 to a ridiculous $2,546 across different sellers. At the low end, it's a fantastic deal for a 165Hz gaming monitor. At anything above $200, you should run away and look at alternatives. The user sentiment score of 85/100, even with low confidence, confirms that people who bought it at a reasonable price feel they got their money's worth. Just make sure you're buying from a seller with a sane price tag, and remember you'll need a DisplayPort cable to hit that 165Hz refresh rate.

Vanaf € 169 1 aanbieding bij 1 winkel
Amazon.fr 1 aanbieding Vanaf € 169

Price History

€ 150 € 200 € 250 € 300 30 mei18 jul € 169

Lees meer

Overview

The Acer KG251Q Jbmidpx is a 24.5-inch gaming monitor built for one thing: speed. If you're hunting for a high refresh rate display on a tight budget, this TN panel is probably on your radar. It pushes up to 165Hz with a response time that can dip as low as 0.6ms, which puts it in the conversation with monitors that cost a lot more. The 1080p resolution keeps things sharp enough for competitive play without crushing your graphics card, and AMD FreeSync helps keep tearing at bay.

Now, you're looking at a TN panel here, not IPS or VA. That means you're trading color accuracy and viewing angles for raw responsiveness. The 400-nit brightness is actually a nice surprise for a budget monitor, making it usable even in a well-lit room. But the stand is barebones, only offering a basic tilt, and the built-in 2-watt speakers are more of a checkbox feature than something you'd actually want to use. This monitor knows what it is: a no-frills esports machine.

We've seen this model pop up across different vendors with a wild price spread, from around $115 to over $2,500 depending on stock and seller. At the lower end, it's a steal. At the higher end, you're getting ripped off. The sweet spot is clearly when you can snag it for under $150, where it becomes a very easy recommendation for the right person.

Common Questions

Q: Is the Acer KG251Q good for gaming?

Yes, it's excellent for competitive gaming thanks to its 165Hz refresh rate and 0.6ms response time, which minimize motion blur and input lag. Just don't expect great colors or viewing angles for more cinematic games.

Q: Does the Acer KG251Q have built-in speakers?

It does have two 2-watt speakers, but they're pretty weak and tinny. Most users recommend using headphones or external speakers instead.

Q: What cable do I need for 165Hz on the Acer KG251Q?

You'll need to use the DisplayPort cable to get the full 165Hz refresh rate. The HDMI port is limited to a lower refresh rate.

Q: Is this monitor good for office work or photo editing?

No, the TN panel has poor color accuracy and narrow viewing angles, making it a bad choice for color-sensitive work or sharing your screen. An IPS monitor would be much better for those tasks.

Who Should Skip This

Skip this monitor if you do any kind of color-sensitive work like photo editing or graphic design. The TN panel's color accuracy is just not up to the task. It's also a bad fit if you often watch movies or play games with friends, as the narrow viewing angles mean anyone not sitting dead-center will see a washed-out image. For a better all-around experience, look at an IPS panel like the ASUS TUF Gaming VG27AQL5A or even a budget 1080p IPS monitor, which will give you much nicer visuals at the cost of a slightly slower response time.

Verdict

Should you buy the Acer KG251Q? If you're a competitive gamer on a strict budget and you only care about frame rates and response times, yes. This monitor delivers a top-tier speed experience for a bottom-tier price, and that's a hard combo to beat. The 165Hz refresh rate and near-instant response time will make your games feel responsive and fluid.

But if you do anything else on your PC, like watch movies, edit photos, or even just browse the web with a friend looking over your shoulder, the TN panel's flaws will grate on you. The poor viewing angles and washed-out colors are a constant reminder that you cheaped out. For a mixed-use setup, save up for an IPS alternative. This is a specialist's tool, not an all-rounder.

Usage Scores

Algemeen (54.3)Gaming (50.5)Office (44.6)Creative (43.7)Portable (12.5)Professional (42.1)Entertainment (36.6)

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