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2 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.

  • KTC H24T27S €13.02
  • Dell P2425D €9.68
Model KTC H24T27S Dell P2425D
Running cost
Running cost (per year) €13.02 €9.68
over 10 years €130 +€33 over 10 years €97
kWh per year 46 34.2
kg CO₂e per year from electricity use 9.7 7.2
Specifications
Brand KTC Dell
Model H24T27S P2425D
Energy class F E
Screen size 24″ (60.4 cm) 24″ (60.5 cm)
Power in on mode (SDR) 21 W 15.6 W
Energy class (HDR) F –
Power in on mode (HDR) 22 W –
Standby 0.2 W 0.3 W
Networked standby 0 W –
Off mode 0.2 W 0.3 W
Resolution 2560 × 1440 2560 × 1440
Aspect ratio 16:9 16:9
Panel LCD LED LCD
Refresh rate 60 Hz 60 Hz
Power supply Internal Internal
Guaranteed support 10 years 7 years
Software updates 10 years 8 years
Spare parts available 10 years 7 years
On the market since August 26, 2026 March 6, 2025
EPREL registration number 2831524 2151579

Rows where the models differ are highlighted.