LG U631A 32U631A-B 31.5" Black
A 100Hz IPS panel with G-Sync compatibility delivers smoother motion than typical office displays, backed by 99% sRGB coverage for accurate color work. The slim design and USB-C with 15W power delivery reduce desk clutter, while the 5ms response time minimizes blur without sacrificing color quality. This monitor is best for office professionals who need a large, crisp QHD workspace with smooth 100Hz scrolling and easy single-cable laptop connectivity.
Snapshot
Pros & Cons
Pros
- Strong social proof (86th percentile) 86th
- Strong feature (72nd percentile) 72nd
- Strong display (69th percentile) 69th
Cons
- Below average user sentiment (19th percentile)
What owners think
How owner sentiment changed over time
ExclusiveBased on when customers actually wrote their reviews - so you can see whether early praise held up.
- Q2 202661/100
Most buyers found the monitor good value with clear picture, but a defect causing purple lines and mixed feedback on brightness/ergonomics lowered sentiment.
- Purple lines appeared and multiplied after three months; one review warns to avoid this model.
- Brightness adequate for some, but barely enough; HDR underwhelming; not ideal for bright rooms.
- No height adjustment, limited swivel; base moves with swivel; riser or stand recommended.
- USB-C power delivery only 10-15W; insufficient to charge laptops, requires separate charger.
- Q1 202668/100
Buyers praise screen real estate and color accuracy but report issues with sturdiness of the stand, missing built-in speakers, and video card compatibility requirements.
- Large 32-inch screen excellent for multitasking and professional work.
- Stand is not sturdy even after proper installation.
- Monitor lacks built-in speakers, a surprising omission for some buyers.
- Requires video card upgrade for full resolution; works well after that.
- Q4 202567/100
Buyers praised the large, vivid screen for multitasking, but noted small fonts on a 23-inch model and gave 0-star ratings despite positive comments.
- Large screen with bright, vivid colors ideal for multitasking with a MacBook.
- Fonts on 23-inch model are small; may need adjustment or larger size.
- Great customer service experience reported by one buyer.
- 0-star ratings given despite positive review content, possible rating errors.
Based on 20 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Display
| Size | 31.5" |
| Resolution | 2560x1440 (QHD) |
| Panel Type | IPS |
| Aspect Ratio | 16:9 |
| Curved | No |
Performance
| Refresh Rate | 100 Hz |
| Response Time | 5 |
| Adaptive Sync | Adaptive-Sync |
Color & HDR
| Brightness | 250 nits |
| Color Gamut | 99% sRGB |
| Color Depth | 16.7M (Number of Colors) |
| HDR | HDR10 |
| HDR Support | HDR10 |
Connectivity
| HDMI Ports | 1 |
| DisplayPort | 0 |
| USB-C | 1 |
| Speakers | No |
| Headphone Jack | Yes |
Ergonomics
| Height Adjustable | No |
| Tilt | Yes |
| Swivel | No |
| Pivot | No |
| VESA Mount | 100x100 |
Features
| Webcam | No |
| Touchscreen | No |
| PIP/PBP | No |
| Weight | 6.5 kg / 14.3 lbs |
vs Competition
| Spec | LG U631A 32U631A-B 31.5" | Dell S2725QC | Gigabyte M Series M27UP SA | ASUS TUF Gaming VG34VQL1B | SANSUI 27 inch | MSI MAG 275UPD E14 |
|---|---|---|---|---|---|---|
| Screen Size | 31.5 | 27 | 27 | 34 | 27 | 27 |
| Resolution | 2560 x 1440 | 3840 x 2160 | 3840 x 2160 | 3440 x 1440 | 2560 x 1440 | 3840 x 2160 |
| Panel Type | IPS | IPS | IPS | VA | IPS | IPS |
| Refresh Rate | 100 | 120 | 160 | 165 | 200 | 288 |
| Response Time Ms | 5 | 8 | 1 | 1 | 1 | 1 |
| Adaptive Sync | Adaptive-Sync | FreeSync Premium | G-Sync Compatible | FreeSync Premium | FreeSync | FreeSync |
| Hdr | HDR10 | HDR | DisplayHDR 400 | DisplayHDR 400 | HDR | DisplayHDR 400 |
| Compare | Compare | Compare | Compare | Compare |
| Product | Color | Portability | Display | Feature | User Sentiment | Ergonomic | Performance | Connectivity | Social Proof |
|---|---|---|---|---|---|---|---|---|---|
| LG U631A 32U631A-B 31.5" | 56 | 55.3 | 68.8 | 71.9 | 19.2 | 48.5 | 52.6 | 45.8 | 86 |
| Dell S2725QC Compare | 73.2 | 82.6 | 88.1 | 71.9 | 96.2 | 90.4 | 43.6 | 87.7 | 95.5 |
| Gigabyte M Series M27UP SA Compare | 85.1 | 82.6 | 88.1 | 85.8 | 76.4 | 90.4 | 75.1 | 87.7 | 73.5 |
| ASUS TUF Gaming VG34VQL1B Compare | 95 | 77.4 | 78.5 | 97.2 | 29.4 | 72.1 | 77.3 | 99.9 | 86 |
| SANSUI 27 inch Compare | 92.8 | 16 | 68.8 | 71.9 | 90 | 90.4 | 84.8 | 77.1 | 90.8 |
| MSI MAG 275UPD E14 Compare | 80.2 | 40.3 | 88.1 | 85.8 | 0 | 90.4 | 89.8 | 66.9 | 76.3 |
Price
Value & Pricing
Best Buy 5 offers From $96
Amazon 1 offer From $200
Adorama 1 offer From $249
Newegg 1 offer From $249
Price History
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
