Acer X27U
Today
Typical price$500
Amazon: the cheapest today among the stores checked
6.8 out of 10 on the spec sheet +0.7
Buy on AmazonAcer X27U or LG 27UP850K?
Cost the same today; Acer X27U has score 0.7 higher (6.8 vs. 6.1).
Acer X27U
6.8score · higher
LG 27UP850K
6.1score
Acer wins 2by componentLG wins 1
- 5.1Image7.5
- 8.5Smoothness·
- 6.0Connections5.0
- 10.0Ergonomics3.0
Acer X27U is the cheaperLG 27UP850K 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 LG 27UP850K works: General use, 23″ to 27″.
Monitors for casual gaming and console
Only Acer X27U works: 120 Hz or more, 25″ to 32″.
Monitors for creative work (photo and video)
Only Acer X27U works: QHD or 4K with an IPS or OLED panel.
Monitors for creative work (photo and video)Up to $550On sale
Neither one fits: Monitors for competitive gaming, Monitors to use two on the desk, Cheap monitors worth buying.
The comparison in detail
Score by component, side by side
Acer X27U wins on connections and ergonomics; 27UP850K wins on image.
- 5.1Image7.5 (wins)
- 8.5SmoothnessN/A
- 6.0 (wins)Connections5.0
- 10.0 (wins)Ergonomics3.0
LG 27UP850K
Today
Typical price$500
Amazon: the cheapest today among the stores checked
6.1 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 X27U
- Amazon Lowest price$500Buy on Amazon
27UP850K
- Amazon Lowest price$500Buy on Amazon
The math the store doesn’t do
Price divided by size and running cost, side by side.
Spec sheet side by side
| Item | Acer X27U | 27UP850K |
|---|---|---|
| Screen | ||
| Type changes | Gaming (144 Hz or more) | General use and office |
| Size | 27 ″ | 27 ″ |
| Resolution changes | QHD | 4K |
| Pixel density changes | 109 ppi | 163 ppi |
| Panel changes | OLED | not listed |
| Aspect ratio | 16:9 | 16:9 |
| Curved screen changes | No | not listed |
| Stated HDR changes | not listed | HDR 400 |
| Line changes | Predator | UltraFine |
| Smoothness | ||
| Refresh rate changes | 240 Hz | not listed |
| Response time (stated) changes | 3 ms | not listed |
| Response time measurement changes | GtG | not listed |
| Sync changes | FreeSync | not listed |
| Connections | ||
| HDMI ports changes | 1 | not listed |
| DisplayPort ports | 1 | 1 |
| USB-C changes | not listed | Yes |
| Built-in speaker changes | Yes | not listed |
| Ergonomics | ||
| Height adjustment changes | Yes | not listed |
| Pivot (portrait mode) | Yes | Yes |
| VESA mount holes changes | Yes | not listed |
| General | ||
| Model code changes | X27U | 27UP850K |
Other comparisons
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.