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.
- Aopen 40XV1CU €25.43
- Blackstorm GM-40UWQHD144Hz €20.59
- Gawfolk GF400D €23.32
| Model | Aopen 40XV1CU | Blackstorm GM-40UWQHD144Hz | Gawfolk GF400D |
|---|---|---|---|
| Running cost | |||
| Running cost (per year) | €25.43 | €20.59 | €23.32 |
| over 10 years | €254 +€48 over 10 years | €206 | €233 +€27 over 10 years |
| kWh per year | 89.8 | 72.7 | 82.3 |
| kg CO₂e per year from electricity use | 19 | 15 | 17 |
| Specifications | |||
| Brand | Aopen | Blackstorm | Gawfolk |
| Model | 40XV1CU | GM-40UWQHD144Hz | GF400D |
| Energy class | G | F | F |
| Screen size | 40″ (101 cm) | 40″ (100.4 cm) | 40″ (97.2 cm) |
| Power in on mode (SDR) | 41 W | 33.2 W | 37.6 W |
| Energy class (HDR) | G | G | – |
| Power in on mode (HDR) | 55 W | 51.5 W | – |
| Standby | 0.5 W | 0.3 W | 0.2 W |
| Off mode | 0.3 W | 0.2 W | 0.2 W |
| Resolution | 3440 × 1440 | 3440 × 1440 | 3440 × 1440 |
| Aspect ratio | 21:9 | 21:9 | 21:9 |
| Panel | LCD | LCD | LCD |
| Refresh rate | 144 Hz | 144 Hz | 200 Hz |
| Power supply | Internal | Internal | External |
| Guaranteed support | 7 years | 2 years | 1 year |
| Software updates | 8 years | 8 years | 1 year |
| Spare parts available | 7 years | 7 years | 1 year |
| On the market since | May 1, 2022 | August 1, 2025 | August 26, 2026 |
| EPREL registration number | 1031145 | 2416269 | 2831110 |
| Networked standby | – | – | 0 W |
Rows where the models differ are highlighted.