Language

Compare models

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

  • ViewSonic

    VS20781(VG3409C)
    F 34″QHDLCD / LED120 Hz

    €19.23 per year

    +€14.26 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.

  • ViewSonic VS20781(VG3409C) €19.23
  • Hgfrtee B340QQU16 €4.96
  • Twistedminds TM34CWQHD165VA €13.52
  • Acer X34 X0 €14.64
Model ViewSonic VS20781(VG3409C) Hgfrtee B340QQU16 Twistedminds TM34CWQHD165VA Acer X34 X0
Running cost
Running cost (per year) €19.23 €4.96 €13.52 €14.64
over 10 years €192 +€143 over 10 years €50 €135 +€86 over 10 years €146 +€97 over 10 years
kWh per year 67.9 17.5 47.7 51.7
kg CO₂e per year from electricity use 14 3.7 10 11
Specifications
Brand ViewSonic Hgfrtee Twistedminds Acer
Model VS20781(VG3409C) B340QQU16 TM34CWQHD165VA X34 X0
Energy class F C E E
Screen size 34″ (87 cm) 34″ (85 cm) 34″ (86.4 cm) 34″ (86.4 cm)
Power in on mode (SDR) 31 W 8 W 21.8 W 23.6 W
Energy class (HDR) G – – G
Power in on mode (HDR) 46 W – – 34 W
Standby 0.5 W 0.1 W 0.2 W 0.5 W
Networked standby 0 W – 0 W –
Off mode 0.3 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 120 Hz 165 Hz 165 Hz 200 Hz
Power supply Internal External External Internal
Guaranteed support 7 years 1 year 1 year 7 years
Software updates 8 years 1 year 1 year 8 years
Spare parts available 7 years 1 year 1 year 7 years
On the market since October 10, 2026 March 18, 2026 November 12, 2024 March 18, 2025
EPREL registration number 2871498 2665077 2192582 2343889

Rows where the models differ are highlighted.