Compare models
4 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
Yearly running cost
Bars in proportion to the energy each model uses.
- ASUS VG34WQL5A €15.51
- AOC CU34E4CW €12.40
- Hgfrtee B340QQU16 €4.96
- EIZO FlexScan EV3451X €9.86
| Model | ASUS VG34WQL5A | AOC CU34E4CW | Hgfrtee B340QQU16 | EIZO FlexScan EV3451X |
|---|---|---|---|---|
| Running cost | ||||
| Running cost (per year) | €15.51 | €12.40 | €4.96 | €9.86 |
| over 10 years | €155 +€105 over 10 years | €124 +€74 over 10 years | €50 | €99 +€49 over 10 years |
| kWh per year | 54.8 | 43.8 | 17.5 | 34.8 |
| kg CO₂e per year from electricity use | 11 | 9.2 | 3.7 | 7.3 |
| Specifications | ||||
| Brand | ASUS | AOC | Hgfrtee | EIZO |
| Model | VG34WQL5A | CU34E4CW | B340QQU16 | FlexScan EV3451X |
| Energy class | E | D | C | C |
| Screen size | 34″ (86.4 cm) | 34″ (86.4 cm) | 34″ (85 cm) | 34″ (86.7 cm) |
| Power in on mode (SDR) | 25 W | 20 W | 8 W | 15.9 W |
| Energy class (HDR) | G | G | – | – |
| Power in on mode (HDR) | 50 W | 46 W | – | – |
| Standby | 0.5 W | 0.5 W | 0.1 W | 0.3 W |
| Off mode | 0.3 W | 0.3 W | 0 W | 0.2 W |
| Resolution | 3440 × 1440 | 3440 × 1440 | 3440 × 1440 | 3440 × 1440 |
| Aspect ratio | 21:9 | 21:9 | 16:9 | 21:9 |
| Panel | LED LCD | LED LCD | LCD | LCD |
| Refresh rate | 60 Hz | 60 Hz | 165 Hz | 60 Hz |
| Power supply | Internal | Internal | External | Internal |
| Guaranteed support | 7 years | 8 years | 1 year | 7 years |
| Software updates | 8 years | 8 years | 1 year | 7 years |
| Spare parts available | 7 years | 7 years | 1 year | 7 years |
| On the market since | February 27, 2026 | October 15, 2025 | March 18, 2026 | August 11, 2026 |
| EPREL registration number | 2581690 | 2418682 | 2665077 | 2663315 |
| Networked standby | – | 2 W | – | – |
Rows where the models differ are highlighted.