LG UltraFine 40U990A 40" Silver 2025
A 39.7-inch 5K2K (5120x2160) IPS curved panel running at 120Hz with FreeSync Premium Pro and Thunderbolt 5 (96W) sets this monitor apart for high-resolution fluidity and connectivity. Its 2500R curvature and 99% DCI-P3 color coverage provide an immersive, color-accurate workspace, while integrated KVM and RJ45 ports simplify multi-device setups. This monitor is best for video editors and content creators who need a vast, color-accurate canvas with seamless Thunderbolt docking for a clutter-free desk.
Snapshot
Pros & Cons
Pros
- Strong connectivity (99th percentile) 99th
- Strong display (98th percentile) 98th
- Strong feature (97th percentile) 97th
- Strong color (96th percentile) 96th
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.
Based on 23 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 ProArt PA32UCDM | Dell UltraSharp U3425WE | MSI MPG MPG 341CQPX QD-OLED | Gigabyte M Series OLED MO27U2 SA | BenQ DesignVue PD3226G |
|---|---|---|---|---|---|---|
| Screen Size | 39.70000076293945 | 31.5 | 34.13999938964844 | 34 | 27 | 31.5 |
| Resolution | 5120x2160 | 3840 x 2160 | 3440x1440 | 3440x1440 | 3840x2160 | 3840x2160 |
| Panel Type | IPS | OLED | IPS | OLED | OLED | IPS |
| Refresh Rate | 120 | 240 | 120 | 240 | 240 | 144 |
| Response Time Ms | 5 | 0.10000000149011612 | 5 | 0.029999999329447746 | 0.029999999329447746 | 1 |
| Adaptive Sync | FreeSync Premium | Adaptive-Sync | G-Sync Compatible | FreeSync Premium Pro | FreeSync Premium Pro | FreeSync Premium |
| Hdr | HDR10 | HDR10/Dolby Vision/Hybrid Log Ga | DisplayHDR 400 | DisplayHDR True Black 400 | DisplayHDR 400 | HDR10 |
| Compare | Compare | Compare | Compare | Compare |
| Product | Color | Compact | Display | Feature | Ergonomic | Performance | Connectivity | Social Proof |
|---|---|---|---|---|---|---|---|---|
| LG UltraFine 40U990A 40" | 96.4 | 82.4 | 98.4 | 97.3 | 72.1 | 56.2 | 99 | 75.2 |
| ASUS ProArt PA32UCDM Compare | 91.8 | 86.8 | 97.4 | 86.3 | 90.4 | 97.9 | 94.6 | 68.9 |
| Dell UltraSharp U3425WE Compare | 86.5 | 86.8 | 80.9 | 97.3 | 90.4 | 56.2 | 99.8 | 86 |
| MSI MPG MPG 341CQPX QD-OLED Compare | 76 | 55.1 | 85.5 | 97.3 | 72.1 | 97.9 | 82.2 | 98.4 |
| Gigabyte M Series OLED MO27U2 SA Compare | 95.5 | 63.9 | 97.4 | 86.3 | 90.4 | 97.9 | 82.2 | 58 |
| BenQ DesignVue PD3226G Compare | 93 | 82.4 | 88.4 | 86.3 | 90.4 | 73.8 | 98 | 7.8 |
Price
Value & Pricing
Amazon.co.jp 1 offers From ¥564,637
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
