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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.

Electricity prices in all EU countries

  • LC-Power

    LC-M34-UWQHD-100-C
    G 34″QHDLCD / LED100 Hz

    €18.36 per year

    +€13.40 a year

  • Cheapest to run

    Hgfrtee

    B340QQU16
    C 34″QHDLCD / LED165 Hz

    €4.96 per year

  • Twistedminds

    TM34CWQHD165VA
    E 34″QHDLCD / LED165 Hz

    €13.52 per year

    +€8.56 a year

  • Acer

    X34 X0
    E 34″QHDLCD / LED200 Hz

    €14.64 per year

    +€9.68 a year

Yearly running cost

Bars in proportion to the energy each model uses.

  • LC-Power LC-M34-UWQHD-100-C €18.36
  • Hgfrtee B340QQU16 €4.96
  • Twistedminds TM34CWQHD165VA €13.52
  • Acer X34 X0 €14.64
Model LC-Power LC-M34-UWQHD-100-C Hgfrtee B340QQU16 Twistedminds TM34CWQHD165VA Acer X34 X0
Running cost
Running cost (per year) €18.36 €4.96 €13.52 €14.64
over 10 years €184 +€134 over 10 years €50 €135 +€86 over 10 years €146 +€97 over 10 years
kWh per year 64.8 17.5 47.7 51.7
kg CO₂e per year from electricity use 14 3.7 10 11
Specifications
Brand LC-Power Hgfrtee Twistedminds Acer
Model LC-M34-UWQHD-100-C B340QQU16 TM34CWQHD165VA X34 X0
Energy class G C E E
Screen size 34″ (86 cm) 34″ (85 cm) 34″ (86.4 cm) 34″ (86.4 cm)
Power in on mode (SDR) 29.6 W 8 W 21.8 W 23.6 W
Standby 0.3 W 0.1 W 0.2 W 0.5 W
Networked standby 0.3 W – 0 W –
Off mode 0.2 W 0 W 0 W 0.3 W
Resolution 3440 × 1440 3440 × 1440 3440 × 1440 3440 × 1440
Aspect ratio 21:9 16:9 21:9 21:9
Panel LED LCD LCD LCD LED LCD
Refresh rate 100 Hz 165 Hz 165 Hz 200 Hz
Power supply Internal External External Internal
On the market since August 12, 2019 March 18, 2026 November 12, 2024 March 18, 2025
EPREL registration number 345077 2665077 2192582 2343889
Guaranteed support – 1 year 1 year 7 years
Software updates – 1 year 1 year 8 years
Spare parts available – 1 year 1 year 7 years
Energy class (HDR) – – – G
Power in on mode (HDR) – – – 34 W

Rows where the models differ are highlighted.