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4 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.
  • LG

    34WR55QC
    F 34″QHDLCD / LED

    €19.10 per year

    +€6.70 a year

  • Cheapest to run

    AOC

    CU34E4CW
    D 34″QHDLCD / LED

    €12.40 per year

  • ASUS

    VU34WCIP-W
    E 34″QHDLCD / LED

    €15.07 per year

    +€2.67 a year

  • MSI

    PRO MP341CQPHG E12
    E 34″QHDLCD / LED

    €15.51 per year

    +€3.10 a year

Yearly running cost

Bars in proportion to the energy each model uses.

  • LG 34WR55QC €19.10
  • AOC CU34E4CW €12.40
  • ASUS VU34WCIP-W €15.07
  • MSI PRO MP341CQPHG E12 €15.51
Model LG 34WR55QC AOC CU34E4CW ASUS VU34WCIP-W MSI PRO MP341CQPHG E12
Running cost
Running cost (per year) €19.10 €12.40 €15.07 €15.51
over 10 years €191 +€67 over 10 years €124 €151 +€27 over 10 years €155 +€31 over 10 years
kWh per year 67.5 43.8 53.2 54.8
kg CO₂e per year from electricity use 14 9.2 11 11
Specifications
Brand LG AOC ASUS MSI
Model 34WR55QC CU34E4CW VU34WCIP-W PRO MP341CQPHG E12
Energy class F D E E
Screen size 34″ (86.4 cm) 34″ (86.4 cm) 34″ (86.4 cm) 34″ (86.4 cm)
Power in on mode (SDR) 30.8 W 20 W 24.3 W 25 W
Energy class (HDR) G G G G
Power in on mode (HDR) 47.5 W 46 W 34.7 W 40 W
Standby 0.5 W 0.5 W 0.5 W 0.5 W
Networked standby 0 W 2 W – –
Off mode 0.3 W 0.3 W 0.3 W 0.3 W
Resolution 3440 × 1440 3440 × 1440 3440 × 1440 3440 × 1440
Aspect ratio 21:9 21:9 21:9 21:9
Panel LED LCD LED LCD LED LCD LCD
Refresh rate 60 Hz 60 Hz 60 Hz 60 Hz
Power supply External Internal External Internal
Guaranteed support 8 years 8 years 7 years 3 years
Software updates 8 years 8 years 8 years 8 years
Spare parts available 8 years 7 years 7 years 3 years
On the market since August 16, 2023 October 15, 2025 January 6, 2025 April 20, 2026
EPREL registration number 1709822 2418682 2205883 2664456

Rows where the models differ are highlighted.