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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.

  • Legamaster STX-7550 €117.84
  • Ernitec 0070-24175 €63.63
  • Dell P7525QT €79.39
Model Legamaster STX-7550 Ernitec 0070-24175 Dell P7525QT
Running cost
Running cost (per year) €117.84 €63.63 €79.39
over 10 years €1,178 +€542 over 10 years €636 €794 +€158 over 10 years
kWh per year 416 225 280
kg CO₂e per year from electricity use 87 47 59
Specifications
Brand Legamaster Ernitec Dell
Model STX-7550 0070-24175 P7525QT
Energy class D E F
Screen size 75″ (191 cm) 75″ (190.5 cm) 75″ (189.3 cm)
Power in on mode (SDR) 190 W 102.6 W 128 W
Energy class (HDR) D F –
Power in on mode (HDR) 190 W 102.6 W –
Standby 0.5 W 0.4 W 0.5 W
Networked standby 0.5 W 0.4 W 1.9 W
Off mode 0 W 0.1 W 0.3 W
Resolution 3840 × 2160 3840 × 2160 3840 × 2160
Aspect ratio 16:9 16:9 16:9
Panel LED LCD LED LCD LED LCD
Refresh rate 60 Hz 60 Hz 60 Hz
Power supply Internal Internal Internal
On the market since March 1, 2019 February 5, 2024 March 27, 2025
EPREL registration number 558244 1901450 2219976
Guaranteed support – 1 year 7 years
Software updates – 7 years 8 years
Spare parts available – 6 years 7 years

Rows where the models differ are highlighted.