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4 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.

Electricity prices in all EU countries

Yearly running cost

Bars in proportion to the energy each model uses.

  • Ad Notam DFU-0420-875 €34.05
  • Ernitec 0070-24143-L-4K €24.81
  • iiyama X4373UHSU-B2 €25.37
  • iiyama G4380UHSU-B2 A €29.65
Model Ad Notam DFU-0420-875 Ernitec 0070-24143-L-4K iiyama X4373UHSU-B2 iiyama G4380UHSU-B2 A
Running cost
Running cost (per year) €34.05 €24.81 €25.37 €29.65
over 10 years €340 +€92 over 10 years €248 €254 +€6 over 10 years €296 +€48 over 10 years
kWh per year 120 87.6 89.6 105
kg CO₂e per year from electricity use 25 18 19 22
Specifications
Brand Ad Notam Ernitec iiyama iiyama
Model DFU-0420-875 0070-24143-L-4K X4373UHSU-B2 G4380UHSU-B2 A
Energy class G E E F
Screen size 43″ (108 cm) 43″ (109.2 cm) 43″ (108 cm) 43″ (108 cm)
Power in on mode (SDR) 54.9 W 40 W 40.9 W 47.8 W
Standby 0.5 W 0.3 W 0.5 W 0.5 W
Resolution 3840 × 2160 3840 × 2160 3840 × 2160 3840 × 2160
Aspect ratio 16:9 16:9 16:9 16:9
Panel LED LCD LED LCD LED LCD LED LCD
Refresh rate 60 Hz 60 Hz 60 Hz 60 Hz
Power supply External Internal Internal Internal
Guaranteed support 8 years 10 years 7 years 7 years
Software updates 8 years 10 years 8 years 8 years
Spare parts available 7 years 10 years 7 years 7 years
On the market since February 1, 2024 January 31, 2025 November 20, 2025 February 20, 2026
EPREL registration number 1860018 2235760 2518811 2591043
Energy class (HDR) – E G G
Power in on mode (HDR) – 41 W 79.1 W 84.6 W
Off mode – – 0.3 W 0.3 W

Rows where the models differ are highlighted.