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.
- Shenzhen Test Display CX123-P €4.34
- ASUS XG129C €3.72
- ShenZhen ShiJiRongLi Technology Development Z1-2 €1.92
- Shenzhen Kenowa HD-123 €1.98
| Model | Shenzhen Test Display CX123-P | ASUS XG129C | ShenZhen ShiJiRongLi Technology Development Z1-2 | Shenzhen Kenowa HD-123 |
|---|---|---|---|---|
| Running cost | ||||
| Running cost (per year) | €4.34 | €3.72 | €1.92 | €1.98 |
| over 10 years | €43 +€24 over 10 years | €37 +€18 over 10 years | €19 | €20 +€1 over 10 years |
| kWh per year | 15.3 | 13.1 | 6.8 | 7 |
| kg CO₂e per year from electricity use | 3.2 | 2.8 | 1.4 | 1.5 |
| Specifications | ||||
| Brand | Shenzhen Test Display | ASUS | ShenZhen ShiJiRongLi Technology Development | Shenzhen Kenowa |
| Model | CX123-P | XG129C | Z1-2 | HD-123 |
| Energy class | A | C | A | A |
| Screen size | 12″ (31.2 cm) | 12″ (31 cm) | 12″ (31.2 cm) | 12″ (31.3 cm) |
| Power in on mode (SDR) | 7 W | 6 W | 3.1 W | 3.2 W |
| Energy class (HDR) | D | – | – | A |
| Power in on mode (HDR) | 13 W | – | – | 3.2 W |
| Standby | 2.5 W | 0.2 W | 0.1 W | 0.5 W |
| Networked standby | 0 W | – | – | – |
| Off mode | 0.3 W | 0.2 W | 0 W | 0.3 W |
| Resolution | 1920 × 720 | 1920 × 720 | 1920 × 720 | 1920 × 720 |
| Aspect ratio | 8:3 | 16:6 | 8:3 | 8:3 |
| Panel | LED LCD | LCD | LED LCD | LCD |
| Refresh rate | 60 Hz | 75 Hz | 60 Hz | 60 Hz |
| Power supply | Internal | External | External | Internal |
| Guaranteed support | 3 years | 7 years | 3 years | 1 year |
| Software updates | 5 years | 8 years | 3 years | 1 year |
| Spare parts available | 3 years | 7 years | 3 years | 1 year |
| On the market since | January 23, 2026 | March 6, 2026 | August 17, 2026 | July 18, 2024 |
| EPREL registration number | 2610036 | 2504872 | 2822300 | 2083240 |
Rows where the models differ are highlighted.