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3 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.

Yearly running cost

Bars in proportion to the energy each model uses.

  • Cepter C27ULTRAX €12.53
  • James Donkey EPIC J60 €7.63
  • Gamebooster LYRIS FF30 €10.42
Model Cepter C27ULTRAX James Donkey EPIC J60 Gamebooster LYRIS FF30
Running cost
Running cost (per year) €12.53 €7.63 €10.42
over 10 years €125 +€49 over 10 years €76 €104 +€28 over 10 years
kWh per year 44.2 26.9 36.8
kg CO₂e per year from electricity use 9.3 5.7 7.7
Specifications
Brand Cepter James Donkey Gamebooster
Model C27ULTRAX EPIC J60 LYRIS FF30
Energy class E E D
Screen size 27″ (68.6 cm) 27″ (68.6 cm) 27″ (69 cm)
Power in on mode (SDR) 20.2 W 12.3 W 16.8 W
Standby 0.2 W 0.4 W 0.2 W
Off mode 0.2 W 0 W 0.2 W
Resolution 1920 × 1080 1920 × 1080 1920 × 1080
Aspect ratio 16:9 16:9 16:9
Panel LED LCD LCD LCD
Refresh rate 240 Hz 360 Hz 300 Hz
Power supply External External STANDARD EXTERNAL
Guaranteed support 10 years – 1 year
Software updates 10 years – 1 year
Spare parts available 10 years – 1 year
On the market since January 20, 2025 December 27, 2024 March 18, 2026
EPREL registration number 2232134 2231752 2664462
Networked standby – 0 W –
Energy class (HDR) – – D
Power in on mode (HDR) – – 16.9 W

Rows where the models differ are highlighted.