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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 B34U6D4 €18.36
  • AOC CU34E4CW €12.40
  • ASUS VU34WCIP-W €15.07
Model LG B34U6D4 AOC CU34E4CW ASUS VU34WCIP-W
Running cost
Running cost (per year) €18.36 €12.40 €15.07
over 10 years €184 +€60 over 10 years €124 €151 +€27 over 10 years
kWh per year 64.8 43.8 53.2
kg CO₂e per year from electricity use 14 9.2 11
Specifications
Brand LG AOC ASUS
Model B34U6D4 CU34E4CW VU34WCIP-W
Energy class F D E
Screen size 34″ (86.4 cm) 34″ (86.4 cm) 34″ (86.4 cm)
Power in on mode (SDR) 29.6 W 20 W 24.3 W
Energy class (HDR) G G G
Power in on mode (HDR) 38.7 W 46 W 34.7 W
Standby 0.5 W 0.5 W 0.5 W
Off mode 0.3 W 0.3 W 0.3 W
Resolution 3440 × 1440 3440 × 1440 3440 × 1440
Aspect ratio 21:9 21:9 21:9
Panel LED LCD LED LCD LED LCD
Refresh rate 60 Hz 60 Hz 60 Hz
Power supply External Internal External
Guaranteed support 8 years 8 years 7 years
Software updates 8 years 8 years 8 years
Spare parts available 8 years 7 years 7 years
On the market since August 3, 2026 October 15, 2025 January 6, 2025
EPREL registration number 2807923 2418682 2205883
Networked standby – 2 W –

Rows where the models differ are highlighted.