LG 27UL550
- Monitors
- 27″
- 4K
- LCD / LED
Uses 42% more energy than the average for 27-inch monitors on Wattabill (3150 models).
Running cost at a glance
- €20.17 per year
- €202 over 10 years
- 69.6 kWh per year
- 15 kg CO₂e per year from electricity use
Your country and usage
- Electricity at €0.2896 per kWh (household price with taxes, Eurostat 2025-S2).
- 210 g CO₂e per kWh generated in 2023 (European Environment Agency). Counts use only, not manufacturing.
We assume prices stay the same over the years.
Electricity prices in all EU countries
Same size and resolution, cheaper to run
Models on the market with the same screen size and resolution as the LG 27UL550 that use at least 5% less energy.
About this model
Text from the manufacturer, via Icecat.
HDR 10Meet the UHD 4K HDR Monitor
This monitor is compatible with HDR10 to represent details in bright and dark parts of high dynamic range contents.
IPS with sRGB 98% (Typ.)True Colours and Wider View
LG IPS display has extraordinary colour accuracy, covering 98% of the sRGB colour spectrum. It also has a wider viewing angle, so it's even easier to enjoy true colour visuals.
Colour Calibrated
It is Colour Calibrated to help maintain accurate colour on the screen and prevent gradual changes, so it preserves the original intend colour.
Read more
RADEON FreeSyncClearer, Smoother Image
Radeon FreeSync reduces the tearing and stuttering that occur between a graphic card's frame rate and a monitor's refresh rate enabling smoother motion and less stuttering in demanding games.
Customized Modes for Any Game
Users can choose FPS or RTS mode, and customize. The settings can be adjusted and optimized for any type of game.
Dynamic Action Sync
Minimize input lag with Dynamic Action Sync so gamers can catch every single moment in real-time.
Black Stabilizer
LG's Black Stabilizer helps make dark scenes bright so it's easier to find the competition.
OnScreen ControlEasier User Interface
OnScreen Control is simple and intuitive. You can customize your display options with a few simple clicks.
Ergonomic StandVersatile Elegance
The curved base enhances stability for dependable performance. The base can be adjusted to change the tilt, height and angle of the monitor for comfortable viewing experience. Also, this monitor can be hung on the wall.
Specifications
| Brand | LG |
|---|---|
| Model | 27UL550 |
| Energy class | G |
| Screen size | 27″ (68.4 cm) |
| Power in on mode (SDR) | 31.8 W |
| Energy class (HDR) | G |
| Power in on mode (HDR) | 37.8 W |
| Standby | 0.5 W |
| Off mode | 0.3 W |
| Resolution | 3840 × 2160 |
| Aspect ratio | 16:9 |
| Panel | LED LCD |
| Refresh rate | 60 Hz |
| Power supply | External |
| Guaranteed support | 8 years |
| Software updates | 8 years |
| Spare parts available | 8 years |
| On the market since | February 26, 2021 |
| EPREL registration number | 356515 |
Source: EPREL, European Commission. Data updated October 13, 2026.
Product description and images: Icecat (Open Icecat), provided as is, without warranty.