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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.
  • AOC

    CU34P3CV
    F 34″QHDLCD / LED

    €19.66 per year

    +€7.26 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.

  • AOC CU34P3CV €19.66
  • AOC CU34E4CW €12.40
  • ASUS VU34WCIP-W €15.07
  • MSI PRO MP341CQPHG E12 €15.51
Model AOC CU34P3CV AOC CU34E4CW ASUS VU34WCIP-W MSI PRO MP341CQPHG E12
Running cost
Running cost (per year) €19.66 €12.40 €15.07 €15.51
over 10 years €197 +€73 over 10 years €124 €151 +€27 over 10 years €155 +€31 over 10 years
kWh per year 69.4 43.8 53.2 54.8
kg CO₂e per year from electricity use 15 9.2 11 11
Specifications
Brand AOC AOC ASUS MSI
Model CU34P3CV 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) 31.7 W 20 W 24.3 W 25 W
Energy class (HDR) G G G G
Power in on mode (HDR) 42 W 46 W 34.7 W 40 W
Standby 0.5 W 0.5 W 0.5 W 0.5 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 Internal 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 7 years 7 years 7 years 3 years
On the market since November 18, 2022 October 15, 2025 January 6, 2025 April 20, 2026
EPREL registration number 1362085 2418682 2205883 2664456
Networked standby – 2 W – –

Rows where the models differ are highlighted.