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
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Yearly running cost
Bars in proportion to the energy each model uses.
- ViewSonic VS21328(VG3442CV) €19.23
- AOC CU34E4CW €12.40
| Model | ViewSonic VS21328(VG3442CV) | AOC CU34E4CW |
|---|---|---|
| Running cost | ||
| Running cost (per year) | €19.23 | €12.40 |
| over 10 years | €192 +€68 over 10 years | €124 |
| kWh per year | 67.9 | 43.8 |
| kg CO₂e per year from electricity use | 14 | 9.2 |
| Specifications | ||
| Brand | ViewSonic | AOC |
| Model | VS21328(VG3442CV) | CU34E4CW |
| Energy class | F | D |
| Screen size | 34″ (86.4 cm) | 34″ (86.4 cm) |
| Power in on mode (SDR) | 31 W | 20 W |
| Standby | 0.5 W | 0.5 W |
| Off mode | 0.3 W | 0.3 W |
| Resolution | 3440 × 1440 | 3440 × 1440 |
| Aspect ratio | 21:9 | 21:9 |
| Panel | LED LCD | LED LCD |
| Refresh rate | 60 Hz | 60 Hz |
| Power supply | Internal | Internal |
| Guaranteed support | 8 years | 8 years |
| Software updates | 9 years | 8 years |
| Spare parts available | 8 years | 7 years |
| On the market since | October 16, 2026 | October 15, 2025 |
| EPREL registration number | 2854750 | 2418682 |
| Energy class (HDR) | – | G |
| Power in on mode (HDR) | – | 46 W |
| Networked standby | – | 2 W |
Rows where the models differ are highlighted.