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3 monitors side by side.

6 h a day
  • 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.

Yearly running cost

Bars in proportion to the energy each model uses.

  • iiyama XU2390HS-B1 €10.11
  • AG Neovo TM-23 €8.74
  • Guangzhou Hongyu Digital ZMON-VIBOX-23-75HZ-HL1 €7.81
Model iiyama XU2390HS-B1 AG Neovo TM-23 Guangzhou Hongyu Digital ZMON-VIBOX-23-75HZ-HL1
Running cost
Running cost (per year) €10.11 €8.74 €7.81
over 10 years €101 +€23 over 10 years €87 +€9 over 10 years €78
kWh per year 35.7 30.9 27.6
kg CO₂e per year from electricity use 7.5 6.5 5.8
Specifications
Brand iiyama AG Neovo Guangzhou Hongyu Digital
Model XU2390HS-B1 TM-23 ZMON-VIBOX-23-75HZ-HL1
Energy class E E D
Screen size 23″ (58.4 cm) 23″ (58.4 cm) 23″ (58.4 cm)
Power in on mode (SDR) 16.3 W 14.1 W 12.6 W
Standby 0.5 W 0.7 W 0.2 W
Off mode 0.3 W 0.3 W 0 W
Resolution 1920 × 1080 1920 × 1080 1920 × 1080
Aspect ratio 16:9 16:9 16:9
Panel LED LCD LED LCD LED LCD
Refresh rate 60 Hz 60 Hz 60 Hz
Power supply Internal Internal Internal
Guaranteed support 7 years 7 years 5 years
Software updates 8 years 8 years 5 years
Spare parts available 7 years 7 years 5 years
On the market since March 1, 2021 January 1, 2023 June 1, 2025
EPREL registration number 356021 619804 2401571
Networked standby – – 0 W

Rows where the models differ are highlighted.