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 VS18277 €21.71
- iiyama X2792QSU-B1 A €6.64
- AOC Q27P4U €8.06
| Model | ViewSonic VS18277 | iiyama X2792QSU-B1 A | AOC Q27P4U |
|---|---|---|---|
| Running cost | |||
| Running cost (per year) | €21.71 | €6.64 | €8.06 |
| over 10 years | €217 +€151 over 10 years | €66 | €81 +€14 over 10 years |
| kWh per year | 76.7 | 23.4 | 28.5 |
| kg CO₂e per year from electricity use | 16 | 4.9 | 6 |
| Specifications | |||
| Brand | ViewSonic | iiyama | AOC |
| Model | VS18277 | X2792QSU-B1 A | Q27P4U |
| Energy class | G | B | C |
| Screen size | 27″ (68.5 cm) | 27″ (68.5 cm) | 27″ (68.5 cm) |
| Power in on mode (SDR) | 35 W | 10.7 W | 13 W |
| Standby | 0.3 W | 0.5 W | 0.3 W |
| Off mode | 0.2 W | 0.3 W | 0.3 W |
| Resolution | 2560 × 1440 | 2560 × 1440 | 2560 × 1440 |
| Aspect ratio | 16:9 | 16:9 | 16:9 |
| Panel | LED LCD | LED LCD | LED LCD |
| Refresh rate | 60 Hz | 60 Hz | 60 Hz |
| Power supply | Internal | Internal | Internal |
| On the market since | September 18, 2020 | June 1, 2026 | July 3, 2025 |
| EPREL registration number | 384448 | 2702610 | 2377208 |
| Guaranteed support | – | 8 years | 8 years |
| Software updates | – | 8 years | 8 years |
| Spare parts available | – | 7 years | 7 years |
| Energy class (HDR) | – | – | C |
| Power in on mode (HDR) | – | – | 13 W |
Rows where the models differ are highlighted.