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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.
  • Gamepower

    LUNIS L90
    G 27″QHDLCD / LED

    €19.85 per year

    +€13.21 a year

  • Cheapest to run

    iiyama

    X2792QSU-B1 A
    B 27″QHDLCD / LED

    €6.64 per year

  • ASUS

    VA27AQSE
    C 27″QHDLCD / LED

    €8.06 per year

    +€1.43 a year

  • AOC

    Q27P4U
    C 27″QHDLCD / LED

    €8.06 per year

    +€1.43 a year

Yearly running cost

Bars in proportion to the energy each model uses.

  • Gamepower LUNIS L90 €19.85
  • iiyama X2792QSU-B1 A €6.64
  • ASUS VA27AQSE €8.06
  • AOC Q27P4U €8.06
Model Gamepower LUNIS L90 iiyama X2792QSU-B1 A ASUS VA27AQSE AOC Q27P4U
Running cost
Running cost (per year) €19.85 €6.64 €8.06 €8.06
over 10 years €198 +€132 over 10 years €66 €81 +€14 over 10 years €81 +€14 over 10 years
kWh per year 70.1 23.4 28.5 28.5
kg CO₂e per year from electricity use 15 4.9 6 6
Specifications
Brand Gamepower iiyama ASUS AOC
Model LUNIS L90 X2792QSU-B1 A VA27AQSE Q27P4U
Energy class G B C C
Screen size 27″ (69 cm) 27″ (68.5 cm) 27″ (68.5 cm) 27″ (68.5 cm)
Power in on mode (SDR) 32 W 10.7 W 13 W 13 W
Standby 0.1 W 0.5 W 0.5 W 0.3 W
Networked standby 0 W – – –
Off mode 0.3 W 0.3 W 0.3 W 0.3 W
Resolution 2560 × 1440 2560 × 1440 2560 × 1440 2560 × 1440
Aspect ratio 16:9 16:9 16:9 16:9
Panel 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 3 years 8 years 7 years 8 years
Software updates 5 years 8 years 8 years 8 years
Spare parts available 3 years 7 years 7 years 7 years
On the market since September 11, 2025 June 1, 2026 July 14, 2025 July 3, 2025
EPREL registration number 2469171 2702610 2378081 2377208
Energy class (HDR) – – G C
Power in on mode (HDR) – – 37 W 13 W

Rows where the models differ are highlighted.