Compare models
3 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.
- ViewSonic VS19271(VP3456a) €19.54
- AOC CU34E4CW €12.40
- MSI PRO MP341CQPHG E12 €15.51
| Model | ViewSonic VS19271(VP3456a) | AOC CU34E4CW | MSI PRO MP341CQPHG E12 |
|---|---|---|---|
| Running cost | |||
| Running cost (per year) | €19.54 | €12.40 | €15.51 |
| over 10 years | €195 +€71 over 10 years | €124 | €155 +€31 over 10 years |
| kWh per year | 69 | 43.8 | 54.8 |
| kg CO₂e per year from electricity use | 14 | 9.2 | 11 |
| Specifications | |||
| Brand | ViewSonic | AOC | MSI |
| Model | VS19271(VP3456a) | CU34E4CW | PRO MP341CQPHG E12 |
| Energy class | F | D | E |
| Screen size | 34″ (86.4 cm) | 34″ (86.4 cm) | 34″ (86.4 cm) |
| Power in on mode (SDR) | 31.5 W | 20 W | 25 W |
| Standby | 0.3 W | 0.5 W | 0.5 W |
| Off mode | 0.2 W | 0.3 W | 0.3 W |
| Resolution | 3440 × 1440 | 3440 × 1440 | 3440 × 1440 |
| Aspect ratio | 21:9 | 21:9 | 21:9 |
| Panel | LED LCD | LED LCD | LCD |
| Refresh rate | 60 Hz | 60 Hz | 60 Hz |
| Power supply | Internal | Internal | Internal |
| Guaranteed support | 8 years | 8 years | 3 years |
| Software updates | 9 years | 8 years | 8 years |
| Spare parts available | 8 years | 7 years | 3 years |
| On the market since | December 1, 2022 | October 15, 2025 | April 20, 2026 |
| EPREL registration number | 1336993 | 2418682 | 2664456 |
| Energy class (HDR) | – | G | G |
| Power in on mode (HDR) | – | 46 W | 40 W |
| Networked standby | – | 2 W | – |
Rows where the models differ are highlighted.