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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.
  • Acer

    DM431K
    G 43″4KLCD / LED

    €36.10 per year

    +€11.29 a year

  • Cheapest to run

    Ernitec

    0070-24143-L-4K
    E 43″4KLCD / LED

    €24.81 per year

  • iiyama

    X4373UHSU-B2
    E 43″4KLCD / LED

    €25.37 per year

    +€0.56 a year

  • iiyama

    G4380UHSU-B2 A
    F 43″4KLCD / LED

    €29.65 per year

    +€4.84 a year

Yearly running cost

Bars in proportion to the energy each model uses.

  • Acer DM431K €36.10
  • Ernitec 0070-24143-L-4K €24.81
  • iiyama X4373UHSU-B2 €25.37
  • iiyama G4380UHSU-B2 A €29.65
Model Acer DM431K Ernitec 0070-24143-L-4K iiyama X4373UHSU-B2 iiyama G4380UHSU-B2 A
Running cost
Running cost (per year) €36.10 €24.81 €25.37 €29.65
over 10 years €361 +€113 over 10 years €248 €254 +€6 over 10 years €296 +€48 over 10 years
kWh per year 127 87.6 89.6 105
kg CO₂e per year from electricity use 27 18 19 22
Specifications
Brand Acer Ernitec iiyama iiyama
Model DM431K 0070-24143-L-4K X4373UHSU-B2 G4380UHSU-B2 A
Energy class G E E F
Screen size 43″ (109.2 cm) 43″ (109.2 cm) 43″ (108 cm) 43″ (108 cm)
Power in on mode (SDR) 58.2 W 40 W 40.9 W 47.8 W
Energy class (HDR) G E G G
Power in on mode (HDR) 67.1 W 41 W 79.1 W 84.6 W
Standby 0.5 W 0.3 W 0.5 W 0.5 W
Off mode 0.3 W – 0.3 W 0.3 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 Internal Internal Internal Internal
Guaranteed support 7 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 May 14, 2019 January 31, 2025 November 20, 2025 February 20, 2026
EPREL registration number 403686 2235760 2518811 2591043

Rows where the models differ are highlighted.