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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.
  • KTC

    H27E6
    F 27″QHD300 Hz

    €16.13 per year

    +€8.37 a year

  • ASUS

    PG27AQDP
    F 27″QHDOLED480 Hz

    €15.20 per year

    +€7.44 a year

  • Cheapest to run

    Gamepower

    RAPID Q-MAX
    E 27″QHDLCD / LED300 Hz

    €7.75 per year

  • Rampage

    PRIME PR27F300QH
    E 27″QHDLCD / LED300 Hz

    €11.41 per year

    +€3.66 a year

Yearly running cost

Bars in proportion to the energy each model uses.

  • KTC H27E6 €16.13
  • ASUS PG27AQDP €15.20
  • Gamepower RAPID Q-MAX €7.75
  • Rampage PRIME PR27F300QH €11.41
Model KTC H27E6 ASUS PG27AQDP Gamepower RAPID Q-MAX Rampage PRIME PR27F300QH
Running cost
Running cost (per year) €16.13 €15.20 €7.75 €11.41
over 10 years €161 +€84 over 10 years €152 +€74 over 10 years €78 €114 +€37 over 10 years
kWh per year 56.9 53.7 27.4 40.3
kg CO₂e per year from electricity use 12 11 5.7 8.5
Specifications
Brand KTC ASUS Gamepower Rampage
Model H27E6 PG27AQDP RAPID Q-MAX PRIME PR27F300QH
Energy class F F E E
Screen size 27″ (68.6 cm) 27″ (67.3 cm) 27″ (68.6 cm) 27″ (69 cm)
Power in on mode (SDR) 26 W 24.5 W 12.5 W 18.4 W
Energy class (HDR) G G – E
Power in on mode (HDR) 45 W 29.6 W – 18.5 W
Standby 0.2 W 0.3 W 0.3 W 0.2 W
Off mode 0.2 W 0.3 W 0.3 W 0.2 W
Resolution 2560 × 1440 2560 × 1440 2560 × 1440 2560 × 1440
Aspect ratio 16:9 16:9 16:9 16:9
Panel TFT-LCD OLED LCD LCD
Refresh rate 300 Hz 480 Hz 300 Hz 300 Hz
Power supply External External External External
On the market since December 3, 2024 August 6, 2024 December 27, 2024 June 5, 2025
EPREL registration number 2211404 2050060 2231840 2379796
Guaranteed support – 7 years – 1 year
Software updates – 8 years – 1 year
Spare parts available – 7 years – 1 year
Networked standby – – 0.4 W 0 W

Rows where the models differ are highlighted.