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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.

  • AOC CU34P3CV €19.66
  • AOC CU34E4CW €12.40
  • MSI PRO MP341CQPHG E12 €15.51
Model AOC CU34P3CV AOC CU34E4CW MSI PRO MP341CQPHG E12
Running cost
Running cost (per year) €19.66 €12.40 €15.51
over 10 years €197 +€73 over 10 years €124 €155 +€31 over 10 years
kWh per year 69.4 43.8 54.8
kg CO₂e per year from electricity use 15 9.2 11
Specifications
Brand AOC AOC MSI
Model CU34P3CV CU34E4CW PRO MP341CQPHG E12
Energy class F D E
Screen size 34″ (86.4 cm) 34″ (86.4 cm) 34″ (86.4 cm)
Power in on mode (SDR) 31.7 W 20 W 25 W
Energy class (HDR) G G G
Power in on mode (HDR) 42 W 46 W 40 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 LCD
Refresh rate 60 Hz 60 Hz 60 Hz
Power supply Internal Internal Internal
Guaranteed support 8 years 8 years 3 years
Software updates 8 years 8 years 8 years
Spare parts available 7 years 7 years 3 years
On the market since November 18, 2022 October 15, 2025 April 20, 2026
EPREL registration number 1362085 2418682 2664456
Networked standby – 2 W –

Rows where the models differ are highlighted.