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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.
  • Koorui

    20N1
    E 20″HDLCD / LED

    €8.06 per year

    +€2.36 a year

  • Cheapest to run

    Dell

    E2026H
    C 20″HDLCD / LED

    €5.71 per year

  • Acer

    V206Q
    D 20″HDLCD / LED

    €6.82 per year

    +€1.12 a year

  • Hannspree

    HL205HPB(HSG1433)
    D 20″HDLCD / LED

    €6.82 per year

    +€1.12 a year

Yearly running cost

Bars in proportion to the energy each model uses.

  • Koorui 20N1 €8.06
  • Dell E2026H €5.71
  • Acer V206Q €6.82
  • Hannspree HL205HPB(HSG1433) €6.82
Model Koorui 20N1 Dell E2026H Acer V206Q Hannspree HL205HPB(HSG1433)
Running cost
Running cost (per year) €8.06 €5.71 €6.82 €6.82
over 10 years €81 +€24 over 10 years €57 €68 +€11 over 10 years €68 +€11 over 10 years
kWh per year 28.5 20.1 24.1 24.1
kg CO₂e per year from electricity use 6 4.2 5.1 5.1
Specifications
Brand Koorui Dell Acer Hannspree
Model 20N1 E2026H V206Q HL205HPB(HSG1433)
Energy class E C D D
Screen size 20″ (50 cm) 20″ (49.5 cm) 20″ (50 cm) 20″ (50 cm)
Power in on mode (SDR) 13 W 9.2 W 11 W 11 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 0.3 W
Resolution 1600 × 900 1600 × 900 1600 × 900 1600 × 900
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 External External
On the market since August 23, 2022 November 11, 2025 April 28, 2025 March 1, 2021
EPREL registration number 1334760 2429540 2335512 422007
Guaranteed support – 7 years 7 years 8 years
Software updates – 8 years 8 years 8 years
Spare parts available – 7 years 7 years 8 years

Rows where the models differ are highlighted.