RATED
Good
6.6/10
27″ LG 27U631A – Full Specifications
Smaller than its 32-inch sibling, the LG 27U631A is a 27-inch IPS QHD monitor at 109 ppi with 48–100 Hz, 99% sRGB and factory calibration.
LG●Monitor
Display
27 in, IPS, 2560 × 1440
27
Refresh Rate
48–100 Hz
48
Brightness
250 nits
Contrast Ratio
1000:1
1000
Overview
Smaller than its 32-inch sibling, the LG 27U631A is a 27-inch IPS QHD monitor at 109 ppi with 48–100 Hz, 99% sRGB and factory calibration. USB-C is listed at 15W, two HDMI 2.0 ports are included, and it weighs just 4.4 kg. There are no speakers, and the stand is fixed. It is the easy choice for a small desk where a 32-inch screen would be too much. Its calibrated colour and low weight make it a simple, tidy match for small home offices and student desks.
- 27-inch IPS QHD at 109 ppi
- 48–100 Hz with variable refresh
- 99% sRGB, 250 nits, calibrated
- USB-C (15W), 2× HDMI 2.0
- True Color Pro, 4.4 kg
Pros & Cons
Pros
- Sharp QHD image at 109 ppi
- 100 Hz refresh for smoother scrolling
- Calibrated 99% sRGB colour
- Very light at 4.4 kg
- USB-C input included
Cons
- USB-C power is only 15W, so charging a laptop is not possible
- No speakers on board, so sound comes from headphones or a soundbar
- Stand only tilts, so height needs a monitor arm
- Brightness tops out at 250 nits in a bright office
Score & Ratings
6.6/10
Good
Model Information
8
| Specification | Value |
|---|---|
| Brand | LG |
| Series | UltraFine |
| Model | 27U631A |
| Model Alias | 27U631A-B |
| Full Product Name | LG UltraFine 27U631A |
| Model Year | 2025 |
| Monitor Type | QHD Monitor |
| Available Colors | White |
Display & Panel
12
| Specification | Value |
|---|---|
| Screen Size | 27 in |
| Exact Diagonal | 26.96 in |
| Screen Shape | Flat |
| Aspect Ratio | 16:9 |
| Active Display Width | 596.736 mm |
| Active Display Height | 335.664 mm |
| Display Area | 90.09% |
| Panel Type | IPS |
| Backlight Type | W-LED |
| 3D Support | No |
| Screen Coating | Anti-glare / Matte |
| Coating Hardness | 3H |
27" Display Size (68.6 cm) 16:9
Resolution & Pixel Details
4
| Specification | Value |
|---|---|
| Native Resolution | 2560 × 1440 |
| Resolution Name | Quad HD (QHD) / 1440p |
| Pixel Density | 109 ppi |
| Pixel Pitch | 0.233 mm |
Picture Quality & Color
10
| Specification | Value |
|---|---|
| Panel Bit Depth | 8-bit |
| FRC | No |
| Display Colors | 16.7 million |
| Total Color Bits | 24-bit |
| Typical Brightness | 250 nits |
| HDR Support | Yes |
| HDR Formats |
|
| HDR10 | Yes |
| sRGB Coverage | 99% |
| Factory Calibration | Yes |
DESK DISTANCE FIT
65cm
CompactIdeal FitWideUltra-Wide
Fills central vision comfortably at a typical desk distance — no head movement needed.
Refresh Rate, Response & Gaming
7
| Specification | Value |
|---|---|
| Refresh Rate Range | 48–100 Hz |
| Minimum Response Time | 5 ms |
| Variable Refresh Rate | Yes |
| Adaptive-Sync | Adaptive-Sync technology |
| Black Stabilizer | Yes |
| Gaming Presets | Yes |
| Dynamic Action Sync | Yes |
Ports & Connectivity
8
| Specification | Value |
|---|---|
| HDMI Ports |
|
| HDMI Version | HDMI 2.0 |
| HDCP Support | Yes |
| HDCP Version | HDCP 2.2 |
| USB-C Input | 1× USB-C 3.0 |
| USB-C Power Delivery | 15W |
| Audio Output | 3.5 mm |
| Headphone Output | Yes |
Ports & Connections
Audio, Camera, Network & Smart Features
2
| Specification | Value |
|---|---|
| Built-In Speakers | No |
| Built-In Camera | No |
Ergonomics & Stand
6
| Specification | Value |
|---|---|
| VESA Mount | Yes |
| Removable Stand | Yes |
| Height Adjustment | No |
| Tilt Adjustment | Yes |
| Swivel Adjustment | No |
| Pivot Adjustment | No |
Dimensions, Weight & Design
6
| Specification | Value |
|---|---|
| Dimensions With Stand | 612.14 × 454.66 × 215.9 mm |
| Dimensions Without Stand | 612.14 × 363.22 × 43.18 mm |
| Weight With Stand | 4.4 kg |
| Weight Without Stand | 3.58 kg |
| Stand Depth | 215.9 mm |
| Bezel Design | 3-side virtually borderless design |
Power & Operating Conditions 9
| Specification | Value |
|---|---|
| 110V Input Range | 100–120V |
| 220V Input Range | 220–240V |
| AC Frequency | 50–60 Hz |
| Sleep Consumption | 0.5 W |
| Off Consumption | 0.3 W |
| Operating Temperature | 0–40°C |
| Operating Humidity | 0–80% |
| Storage Temperature | -20–60°C |
| Storage Humidity | 0–85% |
Eye Care, Protection & Additional Features
8
| Specification | Value |
|---|---|
| Flicker-Free | Yes |
| Reader Mode | Yes |
| Desktop Control Software | Dual Controller |
| Monitor Management Software | LG Switch |
| Auto Input Switching | Yes |
| AI Visual | Super Resolution+ |
| Smart Energy Saving | Yes |
| Additional Monitor Features |
|
Certifications, Standards & Licenses 8
| Specification | Value |
|---|---|
| Energy Star | Certified |
| VESA AdaptiveSync | Adaptive-Sync technology |
| RoHS | Compliant |
| CECP | Certified |
| FCC-B | Certified |
| ErP | Compliant |
| UL | UL (cUL) |
| VCCI | Certified |
Included Accessories
1
| Specification | Value |
|---|---|
| HDMI Cable | Included |
Packaging Information 2
| Specification | Value |
|---|---|
| Package Dimensions | 691 × 450 × 139.7 mm |
| Package Weight | 5.72 kg |
⚡
Estimated Running Cost
Based on this product's rated power draw, not an independent lab measurement — actual usage varies with settings and content.
Daily₹0.72
Monthly₹21.60
Annually₹263
Draws less power than 83% of the 701 comparable displays we track.