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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.

  • LG 40WP95X €35.04
  • Dell U4025QW €24.50
  • Z-Edge UG40 €20.28
Model LG 40WP95X Dell U4025QW Z-Edge UG40
Running cost
Running cost (per year) €35.04 €24.50 €20.28
over 10 years €350 +€148 over 10 years €245 +€42 over 10 years €203
kWh per year 124 86.5 71.6
kg CO₂e per year from electricity use 26 18 15
Specifications
Brand LG Dell Z-Edge
Model 40WP95X U4025QW UG40
Energy class G F F
Screen size 40″ (100.9 cm) 40″ (100.9 cm) 40″ (101.6 cm)
Power in on mode (SDR) 56.5 W 39.5 W 32.7 W
Energy class (HDR) G G G
Power in on mode (HDR) 70.4 W 61.7 W 33.9 W
Standby 0.5 W 0.4 W 0.4 W
Off mode 0.3 W 0.3 W 0 W
Resolution 5120 × 2160 5120 × 2160 5120 × 2160
Aspect ratio 21:9 21:9 4:3
Panel LED LCD LED LCD LED LCD
Refresh rate 60 Hz 60 Hz 120 Hz
Power supply Internal Internal External
Guaranteed support 8 years 7 years 3 years
Software updates 8 years 8 years 3 years
Spare parts available 8 years 7 years 3 years
On the market since February 10, 2022 February 23, 2024 December 30, 2025
EPREL registration number 1156714 1821612 2585149
Networked standby – 1.8 W 0 W

Rows where the models differ are highlighted.