AOC U27B3A
Amazon: the cheapest today among the stores checked
5.7 out of 10 on the spec sheet
Buy on AmazonUpdated 12 Nov 2026
MSI 275UPD costs $236 less today and also has score 1.4 higher (7.1 vs. 5.7).
5.7score
7.1score · higher
AOC wins 2by componentMSI wins 2
AOC U27B3A is the cheaperMSI 275UPD is $236 the cheaper
By the spec rule for each use, the same one the lists on this site use.
Only AOC U27B3A works: General use, 23″ to 27″.
Only MSI 275UPD works: 144 Hz or more and a stated 1 ms.
Only MSI 275UPD works: 120 Hz or more, 25″ to 32″.
Only AOC U27B3A works: QHD or 4K with an IPS or OLED panel.
Monitors for creative work (photo and video)Up to $600On sale
Neither one fits: Monitors to use two on the desk, Cheap monitors worth buying.
AOC U27B3A wins on image and connections; MSI 275UPD wins on smoothness and ergonomics.
Amazon: the cheapest today among the stores checked
5.7 out of 10 on the spec sheet
Buy on AmazonAmazon: the cheapest today among the stores checked
7.1 out of 10 on the spec sheet +1.4
Buy on AmazonAffiliate links: if you buy, the store pays us a commission at no cost to you.
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.
Updated 12/11/2026
Price divided by size and running cost, side by side.
| Math | AOC U27B3A | MSI 275UPD |
|---|---|---|
| Price per inch | $22.06 | $13.33 menor |
| Item | AOC U27B3A | MSI 275UPD |
|---|---|---|
| Screen | ||
| Type changes | General use and office | Gaming (144 Hz or more) |
| Size | 27 ″ | 27 ″ |
| Resolution | 4K | 4K |
| Pixel density | 163 ppi | 163 ppi |
| Panel changes | IPS | not listed |
| Aspect ratio | 16:9 | 16:9 |
| Curved screen changes | No | not listed |
| Stated HDR changes | HDR | not listed |
| Line changes | not listed | MAG |
| Smoothness | ||
| Refresh rate changes | 60 Hz | 288 Hz |
| Response time (stated) changes | 4 ms | 1 ms |
| Response time measurement changes | MPRT | not listed |
| Sync changes | Adaptive-Sync | not listed |
| Connections | ||
| HDMI ports changes | 2 | 1 |
| DisplayPort ports | 1 | 1 |
| Built-in speaker | Yes | Yes |
| Ergonomics | ||
| Height adjustment changes | not listed | Yes |
| VESA mount holes | Yes | Yes |
| General | ||
| Model code changes | U27B3A | 275UPD |
MSI 275UPD orAcer DISPLAYHDR400$401 · score 3.4Compare
MSI 275UPD orAcer ED273U$300 · score 4.6Compare
MSI 275UPD orAcer UT222Q$370 · score 2.8Compare
MSI 275UPD orAcer X27U$500 · score 6.8Compare
MSI 275UPD orAcer XV272U$301 · score 5.5Compare
MSI 275UPD orAcer XV275K$448 · score 5.8CompareSource: 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.