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
- Add a model Use the Compare buttons on any of the monitors.
Yearly running cost
Bars in proportion to the energy each model uses.
- Cooler Master GM34-CW €23.69
- Acer EI342CKR €19.78
| Model | Cooler Master GM34-CW | Acer EI342CKR |
|---|---|---|
| Running cost | ||
| Running cost (per year) | €23.69 | €19.78 |
| over 10 years | €237 +€39 over 10 years | €198 |
| kWh per year | 83.7 | 69.9 |
| kg CO₂e per year from electricity use | 18 | 15 |
| Specifications | ||
| Brand | Cooler Master | Acer |
| Model | GM34-CW | EI342CKR |
| Energy class | G | G |
| Screen size | 34″ (86.4 cm) | 34″ (86.4 cm) |
| Power in on mode (SDR) | 38.2 W | 31.9 W |
| Energy class (HDR) | G | G |
| Power in on mode (HDR) | 47.7 W | 51.2 W |
| Standby | 0.3 W | 0.4 W |
| Off mode | 0.3 W | 0.3 W |
| Resolution | 3440 × 1440 | 3440 × 1440 |
| Aspect ratio | 21:9 | 21:9 |
| Panel | LCD | LCD |
| Refresh rate | 144 Hz | 144 Hz |
| Power supply | Internal | Internal |
| On the market since | January 1, 2020 | March 31, 2021 |
| EPREL registration number | 550030 | 372019 |
| Guaranteed support | – | 7 years |
| Software updates | – | 8 years |
| Spare parts available | – | 7 years |
Rows where the models differ are highlighted.