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.
- KTC H27S25E €16.13
- iiyama X2792QSU-B1 A €6.64
- ASUS VA27AQSE €8.06
| Model | KTC H27S25E | iiyama X2792QSU-B1 A | ASUS VA27AQSE |
|---|---|---|---|
| Running cost | |||
| Running cost (per year) | €16.13 | €6.64 | €8.06 |
| over 10 years | €161 +€95 over 10 years | €66 | €81 +€14 over 10 years |
| kWh per year | 56.9 | 23.4 | 28.5 |
| kg CO₂e per year from electricity use | 12 | 4.9 | 6 |
| Specifications | |||
| Brand | KTC | iiyama | ASUS |
| Model | H27S25E | X2792QSU-B1 A | VA27AQSE |
| Energy class | F | B | C |
| Screen size | 27″ (68.6 cm) | 27″ (68.5 cm) | 27″ (68.5 cm) |
| Power in on mode (SDR) | 26 W | 10.7 W | 13 W |
| Energy class (HDR) | G | – | G |
| Power in on mode (HDR) | 45 W | – | 37 W |
| Standby | 0.2 W | 0.5 W | 0.5 W |
| Off mode | 0.2 W | 0.3 W | 0.3 W |
| Resolution | 2560 × 1440 | 2560 × 1440 | 2560 × 1440 |
| Aspect ratio | 16:9 | 16:9 | 16:9 |
| Panel | TFT-LCD | LED LCD | LED LCD |
| Refresh rate | 60 Hz | 60 Hz | 60 Hz |
| Power supply | External | Internal | Internal |
| On the market since | October 31, 2024 | June 1, 2026 | July 14, 2025 |
| EPREL registration number | 2186691 | 2702610 | 2378081 |
| Guaranteed support | – | 8 years | 7 years |
| Software updates | – | 8 years | 8 years |
| Spare parts available | – | 7 years | 7 years |
Rows where the models differ are highlighted.