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.
- Renkforce 2521581 €5.27
- Japannext JN-MD-156IPS144FHDR €1.61
- Shenzhen G-world Z1FC €2.67
- Cigaa S9-C €3.10
| Model | Renkforce 2521581 | Japannext JN-MD-156IPS144FHDR | Shenzhen G-world Z1FC | Cigaa S9-C |
|---|---|---|---|---|
| Running cost | ||||
| Running cost (per year) | €5.27 | €1.61 | €2.67 | €3.10 |
| over 10 years | €53 +€37 over 10 years | €16 | €27 +€11 over 10 years | €31 +€15 over 10 years |
| kWh per year | 18.6 | 5.7 | 9.4 | 11 |
| kg CO₂e per year from electricity use | 3.9 | 1.2 | 2 | 2.3 |
| Specifications | ||||
| Brand | Renkforce | Japannext | Shenzhen G-world | Cigaa |
| Model | 2521581 | JN-MD-156IPS144FHDR | Z1FC | S9-C |
| Energy class | D | E | A | A |
| Screen size | 16″ (39.6 cm) | 16″ (39.4 cm) | 16″ (40.7 cm) | 16″ (39.6 cm) |
| Power in on mode (SDR) | 8.5 W | 2.6 W | 4.3 W | 5 W |
| Energy class (HDR) | D | E | – | – |
| Power in on mode (HDR) | 8.5 W | 7.9 W | – | – |
| Standby | 0.3 W | 0.2 W | 0.3 W | 0.2 W |
| Resolution | 1920 × 1080 | 1920 × 1080 | 1920 × 1080 | 1920 × 1080 |
| Aspect ratio | 16:9 | 16:9 | 16:9 | 16:9 |
| Panel | LED | LED LCD | LCD | LED LCD |
| Refresh rate | 75 Hz | 144 Hz | 144 Hz | 120 Hz |
| Power supply | External | External | Internal | External |
| On the market since | June 30, 2022 | May 1, 2024 | April 1, 2025 | April 20, 2026 |
| EPREL registration number | 1221835 | 1972024 | 1775900 | 2698767 |
| Guaranteed support | – | 1 year | – | 2 years |
| Software updates | – | 1 year | – | 2 years |
| Spare parts available | – | 1 year | – | 2 years |
| Networked standby | – | – | 0 W | 0 W |
| Off mode | – | – | 0.2 W | 0.2 W |
Rows where the models differ are highlighted.