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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.
  • Tees

    CG271GW
    E 27″QHDLCD / LED165 Hz

    €13.02 per year

    +€5.27 a year

  • Cheapest to run

    Gamepower

    RAPID Q-MAX
    E 27″QHDLCD / LED300 Hz

    €7.75 per year

  • Cepter

    C27ESPORTP4
    D 27″QHDOLED240 Hz

    €9.92 per year

    +€2.17 a year

  • Ozone

    OZON G2790 QHD
    E 27″QHDLCD / LED180 Hz

    €11.29 per year

    +€3.54 a year

Yearly running cost

Bars in proportion to the energy each model uses.

  • Tees CG271GW €13.02
  • Gamepower RAPID Q-MAX €7.75
  • Cepter C27ESPORTP4 €9.92
  • Ozone OZON G2790 QHD €11.29
Model Tees CG271GW Gamepower RAPID Q-MAX Cepter C27ESPORTP4 Ozone OZON G2790 QHD
Running cost
Running cost (per year) €13.02 €7.75 €9.92 €11.29
over 10 years €130 +€53 over 10 years €78 €99 +€22 over 10 years €113 +€35 over 10 years
kWh per year 46 27.4 35 39.9
kg CO₂e per year from electricity use 9.7 5.7 7.4 8.4
Specifications
Brand Tees Gamepower Cepter Ozone
Model CG271GW RAPID Q-MAX C27ESPORTP4 OZON G2790 QHD
Energy class E E D E
Screen size 27″ (68.5 cm) 27″ (68.6 cm) 27″ (69 cm) 27″ (68.6 cm)
Power in on mode (SDR) 21 W 12.5 W 16 W 18.2 W
Standby 0.5 W 0.3 W 0.2 W 0.3 W
Networked standby 0.5 W 0.4 W – 0 W
Off mode 0.5 W 0.3 W 0.2 W 0.2 W
Resolution 2560 × 1440 2560 × 1440 2560 × 1440 2560 × 1440
Aspect ratio 16:9 16:9 16:9 16:9
Panel LED LCD LCD OLED LED LCD
Refresh rate 165 Hz 300 Hz 240 Hz 180 Hz
Power supply Internal External External External
Guaranteed support 3 years – 7 years 6 years
Software updates 2 years – 7 years 6 years
Spare parts available 7 years – 7 years 6 years
On the market since November 30, 2024 December 27, 2024 July 20, 2026 August 22, 2025
EPREL registration number 2201482 2231840 2732628 2451289
Energy class (HDR) – – F –
Power in on mode (HDR) – – 22 W –

Rows where the models differ are highlighted.