LG UltraFine 40U990A 40" White 2025
Screen 39.70000076293945"
Resolution 5120 x 2160
Panel IPS
Refresh 120 Hz
response time ms 5
adaptive sync FreeSync Premium
HDR HDR10
86 Overall Score
Price €0
Snapshot
Pros & Cons
Pros
- Strong connectivity (99th percentile) 99th
- Strong display (99th percentile) 99th
- Strong feature (97th percentile) 97th
- Strong color (97th percentile) 97th
Cons
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.
Owner sentiment has cooled since launch
Based on 16 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Display
| Size | 39.7" |
| Resolution | 5120x2160 |
| Panel Type | IPS |
| Aspect Ratio | 21:9 |
| Curved | Yes |
| Curvature | 2500 |
Performance
| Refresh Rate | 120 Hz |
| Response Time | 5 |
| Adaptive Sync | FreeSync Premium |
Color & HDR
| Brightness | 450 nits |
| Color Gamut | 99% DCI-P3 |
| Color Depth | 10-bit |
| HDR | HDR10 |
| HDR Support | HDR10 |
Connectivity
| HDMI Ports | 2 |
| DisplayPort | 1 |
| USB-C | 2 |
| Thunderbolt | Thunderbolt 5 |
| Speakers | Yes |
| Headphone Jack | Yes |
Ergonomics
| Height Adjustable | Yes |
| Tilt | Yes |
| Swivel | Yes |
| Pivot | No |
| VESA Mount | 100x100 |
Features
| Webcam | No |
| Touchscreen | No |
| PIP/PBP | Yes |
| Power | 45 |
| Weight | 14.1 kg / 31.1 lbs |
vs Competition
| Spec | LG UltraFine 40U990A 40" | ASUS ROG Strix XG27AQDMG | MSI MAG 271QPX QD-OLED E2 | Samsung Odyssey G60SD | Dell UltraSharp U4025QW | Alienware AW-Series AW2725D |
|---|---|---|---|---|---|---|
| Screen Size | 39.70000076293945 | 26.5 | 27 | 27 | 39.70000076293945 | 27 |
| Resolution | 5120 x 2160 | 2560 x 1440 | 2560 x 1440 | 2560 x 1440 | 5120 x 2160 | 2560 x 1440 |
| Panel Type | IPS | OLED | QD-OLED | QD-OLED | IPS | QD-OLED |
| Refresh Rate | 120 | 240 | 240 | 360 | 120 | 280 |
| Response Time Ms | 5 | 0.029999999329447746 | 0.029999999329447746 | 0.029999999329447746 | 5 | 0.029999999329447746 |
| Adaptive Sync | FreeSync Premium | FreeSync Premium Pro | FreeSync Premium Pro | FreeSync Premium Pro | Adaptive-Sync | FreeSync Premium Pro |
| Hdr | HDR10 | HDR10 | DisplayHDR True Black 400 | HDR10+ | DisplayHDR 600 | DisplayHDR 400 True Black |
| Compare | Compare | Compare | Compare | Compare |
| Product | Color | Portability | Display | Feature | Ergonomic | Performance | Connectivity | Social Proof |
|---|---|---|---|---|---|---|---|---|
| LG UltraFine 40U990A 40" | 96.7 | 82.2 | 98.5 | 97.1 | 72.9 | 56.6 | 99 | 74.3 |
| ASUS ROG Strix XG27AQDMG Compare | 96.7 | 73.6 | 75.8 | 72.1 | 90.5 | 98 | 93.5 | 90.4 |
| MSI MAG 271QPX QD-OLED E2 Compare | 99 | 63.5 | 76.6 | 85.9 | 90.5 | 98 | 82.1 | 99.5 |
| Samsung Odyssey G60SD Compare | 90.9 | 45.2 | 76.6 | 72.1 | 90.5 | 99.6 | 87.9 | 95.3 |
| Dell UltraSharp U4025QW Compare | 97.8 | 82.2 | 95.5 | 97.1 | 90.5 | 56.6 | 99.3 | 95.3 |
| Alienware AW-Series AW2725D Compare | 98.4 | 84.9 | 76.6 | 72.1 | 90.5 | 99.3 | 95.5 | 99.9 |
Price
Value & Pricing
We started tracking prices for this product on May 30, 2026. The chart appears once we have more data.
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
