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 VS20781(VA3420C-2) €19.23
- Twistedminds TM34CWQHD165VA €13.52
| Model | ViewSonic VS20781(VA3420C-2) | Twistedminds TM34CWQHD165VA |
|---|---|---|
| Running cost | ||
| Running cost (per year) | €19.23 | €13.52 |
| over 10 years | €192 +€57 over 10 years | €135 |
| kWh per year | 67.9 | 47.7 |
| kg CO₂e per year from electricity use | 14 | 10 |
| Specifications | ||
| Brand | ViewSonic | Twistedminds |
| Model | VS20781(VA3420C-2) | TM34CWQHD165VA |
| Energy class | F | E |
| Screen size | 34″ (87 cm) | 34″ (86.4 cm) |
| Power in on mode (SDR) | 31 W | 21.8 W |
| Energy class (HDR) | G | – |
| Power in on mode (HDR) | 46 W | – |
| Standby | 0.5 W | 0.2 W |
| Networked standby | 0 W | 0 W |
| Off mode | 0.3 W | 0 W |
| Resolution | 3440 × 1440 | 3440 × 1440 |
| Aspect ratio | 21:9 | 21:9 |
| Panel | LED LCD | LCD |
| Refresh rate | 120 Hz | 165 Hz |
| Power supply | Internal | External |
| Guaranteed support | 7 years | 1 year |
| Software updates | 8 years | 1 year |
| Spare parts available | 7 years | 1 year |
| On the market since | December 24, 2025 | November 12, 2024 |
| EPREL registration number | 2580657 | 2192582 |
Rows where the models differ are highlighted.