Trusted Reviews 4.0 / 5
Original rating: 4 / 5
Review identifies this exact manufacturer code.
Read the full review ↗Checked 16 Sep 2026
Monitors
LG 34WN780-B reviews
Product specifications and review coverage for this exact model.
Image supplied through Icecat
Product overview
LG 34WN780-B is listed in the computer monitors category. The recorded specifications include display diagonal: 86.4 cm (34"); display resolution: 3440 x 1440 pixels; panel type: IPS; maximum refresh rate: 75 Hz. This entry covers manufacturer code 34WN780-B. Specifications relate to this exact source record; other editions or packages may differ.
Automatically assembled from the source specifications. This is a factual summary, not a hands-on review.
Expert reviews
The COR Score gives each publisher one rating. Scores are converted to the same five-point scale.
Specifications
Manufacturer code: 34WN780-B. Icecat product 87044666 · Checked 16 Sep 2026. The source lists this code for Great Britain. No specifications are transferred from other editions.
Key specifications
The main features to compare for this exact model. Missing details are not assumed.
| Screen size | 86.4 cm (34") |
|---|---|
| Screen resolution | 3440 x 1440 pixels |
| Panel type | IPS |
| Maximum refresh rate | 75 Hz |
| Response time | 5 ms |
| Display brightness (typical) | 300 cd/m² |
| High Dynamic Range (HDR) supported | Yes |
| HDMI ports | 2 |
| DisplayPort connections | 1 |
More product specifications
Open a section for the details that matter to you.
Audio & listening4 details
| Number of speakers | 2 |
|---|---|
| Rated audio power (RMS) | 14 W |
| Built-in speakers | Yes |
| Headphone out | Yes |
Display10 details
| Display technology | LED |
|---|---|
| Touchscreen | No |
| Screen shape | Flat |
| Contrast ratio (typical) | 1000:1 |
| Viewing angle, horizontal | 178° |
| Viewing angle, vertical | 178° |
| Display number of colours | 16.7 million colours |
| High Dynamic Range (HDR) technology | High Dynamic Range 10 (HDR10) |
| On Screen Display (OSD) | Yes |
| Native refresh rate | 60 Hz |
Camera, image & video1 detail
| Built-in camera | No |
|---|
Connections & wireless6 details
| Built-in USB hub | No |
|---|---|
| Number of upstream ports | 2 |
| USB Type-A downstream ports quantity | 2 |
| DVI port | No |
| HDMI | Yes |
| Panel mounting interface | 100 x 100 mm |
Power & battery10 details
| Energy efficiency class (SDR) | G |
|---|---|
| Energy efficiency class (HDR) | G |
| Energy consumption (SDR) per 1000 hours | 37 kWh |
| Energy consumption (HDR) per 1000 hours | 49 kWh |
| Power consumption (standby) | 0.5 W |
| Power consumption (off) | 0.3 W |
| AC input voltage | 100 - 240 V |
| AC input frequency | 50 - 60 Hz |
| Power supply type | External |
| Energy efficiency scale | A to G |
Design & dimensions12 details
| Product colour | Black |
|---|---|
| VESA mounting | Yes |
| Height adjustment | Yes |
| Adjustable height (max) | 13 cm |
| Width (with stand) | 816.5 mm |
| Depth (with stand) | 406.4 mm |
| Height (with stand) | 612.4 mm |
| Weight (with stand) | 10.8 kg |
| Width (without stand) | 816.5 mm |
| Depth (without stand) | 45.5 mm |
| Height (without stand) | 365.3 mm |
| Weight (without stand) | 6.9 kg |
Further product details7 details
| HD type | UltraWide Quad HD |
|---|---|
| Native aspect ratio | 21:9 |
| Pixel pitch | 0.2325 x 0.2325 mm |
| sRGB coverage (typical) | 99% |
| AMD FreeSync | Yes |
| Flicker-free technology | Yes |
| Market positioning | Business |
Packaging & supplied accessories4 details
| Package width | 940 mm |
|---|---|
| Package depth | 268 mm |
| Package height | 516 mm |
| Harmonized System (HS) code | 85285210 |
Specifications describe the supplied product data, not measured review results. Battery life, range and performance figures are source claims and can vary with use.
