Acer KG251Q
Today
Typical price$145
Amazon: the cheapest today among the stores checked
4.2 out of 10 on the spec sheet +1.3
Buy on AmazonAcer KG251Q or BenQ GW2791?
Acer KG251Q costs $88 less today and also has score 1.3 higher (4.2 vs. 2.9).
Acer KG251Q
4.2score · higher
BenQ GW2791
2.9score
Acer wins 1by componentBenQ wins 0
- 1.2Image0.8
- 8.0Smoothness4.7
- 5.0Connections5.0
Acer KG251Q is $88 the cheaperBenQ GW2791 is the cheaper
The best for each use
By the spec rule for each use, the same one the lists on this site use.
Monitors for work and study
Only BenQ GW2791 works: General use, 23″ to 27″.
Monitors for competitive gaming
Only Acer KG251Q works: 144 Hz or more and a stated 1 ms.
Monitors for casual gaming and console
Only Acer KG251Q works: 120 Hz or more, 25″ to 32″.
Cheap monitors worth buying
Both work. Acer KG251Q is $88 cheaper.
Neither one fits: Monitors for creative work (photo and video), Monitors to use two on the desk.
The comparison in detail
Score by component, side by side
Acer KG251Q wins on smoothness.
- 1.2Image0.8
- 8.0 (wins)Smoothness4.7
- 5.0Connections5.0
BenQ GW2791
Today
Typical price$233
Amazon: the cheapest today among the stores checked
2.9 out of 10 on the spec sheet
Buy on AmazonAffiliate links: if you buy, the store pays us a commission at no cost to you.
Both prices over the last 30 days
First data point for one of the two: the chart appears as the days go by.
Still only a few days of data for both to read the trend; the chart fills in as the days go by.
Where is each one cheapest today?
Updated 12/11/2026
Acer KG251Q
- Amazon Lowest price$145Buy on Amazon
BenQ GW2791
- Amazon Lowest price$233Buy on Amazon
The math the store doesn’t do
Price divided by size and running cost, side by side.
| Math | Acer KG251Q | BenQ GW2791 |
|---|---|---|
| Price per inch | $5.82 menor | $8.63 |
Spec sheet side by side
| Item | Acer KG251Q | BenQ GW2791 |
|---|---|---|
| Screen | ||
| Type changes | Gaming (144 Hz or more) | General use and office |
| Size changes | 25 ″ | 27 ″ |
| Resolution | Full HD | Full HD |
| Pixel density changes | 88 ppi | 82 ppi |
| Aspect ratio | 16:9 | 16:9 |
| Line changes | Nitro | not listed |
| Smoothness | ||
| Refresh rate changes | 200 Hz | 100 Hz |
| Response time (stated) changes | 0.5 ms | not listed |
| Sync changes | FreeSync | not listed |
| Connections | ||
| HDMI ports | 1 | 1 |
| DisplayPort ports | 1 | 1 |
| General | ||
| Model code changes | KG251Q | GW2791 |
Other comparisons
Acer KG251Q orAsus VG259QM5A$233 · score 4.7Compare
BenQ GW2791 orAOC Q27G4XY$255 · score 2.9Compare
BenQ GW2791 orAcer KG240Y$154 · score 5.5Compare
Acer KG251Q orMSI 274QF$240 · score 4.5Compare
BenQ GW2791 orDell P2225H$220 · score 2.9Compare
Acer KG251Q orMSI 275QF$240 · score 4.5Compare
See more 5 comparisons
- BenQ GW2791 or MSI MP225$97 · score 4.3
- Acer KG251Q or MSI MP275$233 · score 4.5
- Acer KG251Q or Acer KG240Y$154 · score 5.5
- Acer KG251Q or MSI G242L$150 · score 4.7
- Acer KG251Q or MSI MP225$97 · score 4.3
How we choose
Source: Amazon.ca catalog, checked on 12/11/2026.
Lowest price seen for the product on Amazon.ca, delivered to Toronto M5V 3L9, on the day it was read, before GST/HST. The model is the brand plus the name of the monitor; the versions go in the table. The price range, the median and the position use only models with a score; the price comparison looks at models whose score is within 0.5 points.
The spec score doesn’t measure the real calibration or durability, and the strong or weak point reading is just a comparison of numbers, not a buying recommendation.