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 VS20506 (VA3420C) €17.74
- Hgfrtee B340QQU16 €4.96
- Twistedminds TM34CWQHD165VA €13.52
| Model | ViewSonic VS20506 (VA3420C) | Hgfrtee B340QQU16 | Twistedminds TM34CWQHD165VA |
|---|---|---|---|
| Running cost | |||
| Running cost (per year) | €17.74 | €4.96 | €13.52 |
| over 10 years | €177 +€128 over 10 years | €50 | €135 +€86 over 10 years |
| kWh per year | 62.6 | 17.5 | 47.7 |
| kg CO₂e per year from electricity use | 13 | 3.7 | 10 |
| Specifications | |||
| Brand | ViewSonic | Hgfrtee | Twistedminds |
| Model | VS20506 (VA3420C) | B340QQU16 | TM34CWQHD165VA |
| Energy class | F | C | E |
| Screen size | 34″ (88.7 cm) | 34″ (85 cm) | 34″ (86.4 cm) |
| Power in on mode (SDR) | 28.6 W | 8 W | 21.8 W |
| Energy class (HDR) | G | – | – |
| Power in on mode (HDR) | 38.5 W | – | – |
| Standby | 0.5 W | 0.1 W | 0.2 W |
| Networked standby | 0 W | – | 0 W |
| Off mode | 0.3 W | 0 W | 0 W |
| Resolution | 3440 × 1440 | 3440 × 1440 | 3440 × 1440 |
| Aspect ratio | 21:9 | 16:9 | 21:9 |
| Panel | LED LCD | LCD | LCD |
| Refresh rate | 120 Hz | 165 Hz | 165 Hz |
| Power supply | External | External | External |
| Guaranteed support | 3 years | 1 year | 1 year |
| Software updates | 9 years | 1 year | 1 year |
| Spare parts available | 8 years | 1 year | 1 year |
| On the market since | March 10, 2025 | March 18, 2026 | November 12, 2024 |
| EPREL registration number | 2245775 | 2665077 | 2192582 |
Rows where the models differ are highlighted.