Compare models
2 monitors side by side.
- Electricity at €0.2832 per kWh (household price with taxes, Eurostat 2026-S1).
- 210 g CO₂e per kWh generated in 2023 (European Environment Agency). Counts use only, not manufacturing.
Electricity prices in all EU countries
- Cheapest to run
- Add a model Use the Compare buttons on any of the monitors.
Yearly running cost
Bars in proportion to the energy each model uses.
- LG C40U9D9 €24.56
- Z-Edge UG40 €20.28
| Model | LG C40U9D9 | Z-Edge UG40 |
|---|---|---|
| Running cost | ||
| Running cost (per year) | €24.56 | €20.28 |
| over 10 years | €246 +€43 over 10 years | €203 |
| kWh per year | 86.7 | 71.6 |
| kg CO₂e per year from electricity use | 18 | 15 |
| Specifications | ||
| Brand | LG | Z-Edge |
| Model | C40U9D9 | UG40 |
| Energy class | F | F |
| Screen size | 40″ (100.9 cm) | 40″ (101.6 cm) |
| Power in on mode (SDR) | 39.6 W | 32.7 W |
| Energy class (HDR) | G | G |
| Power in on mode (HDR) | 62 W | 33.9 W |
| Standby | 0.5 W | 0.4 W |
| Off mode | 0.3 W | 0 W |
| Resolution | 5120 × 2160 | 5120 × 2160 |
| Aspect ratio | 21:9 | 4:3 |
| Panel | LED LCD | LED LCD |
| Refresh rate | 60 Hz | 120 Hz |
| Power supply | Internal | External |
| Guaranteed support | 8 years | 3 years |
| Software updates | 8 years | 3 years |
| Spare parts available | 8 years | 3 years |
| On the market since | October 15, 2026 | December 30, 2025 |
| EPREL registration number | 2878205 | 2585149 |
| Networked standby | – | 0 W |
Rows where the models differ are highlighted.