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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.

  • Acer B287K €16.75
  • Japannext JN-IPS280UHD60F-P-W €15.51
  • Eneo VM-UHD28MF €15.51
Model Acer B287K Japannext JN-IPS280UHD60F-P-W Eneo VM-UHD28MF
Running cost
Running cost (per year) €16.75 €15.51 €15.51
over 10 years €167 +€12 over 10 years €155 €155
kWh per year 59.1 54.8 54.8
kg CO₂e per year from electricity use 12 11 11
Specifications
Brand Acer Japannext Eneo
Model B287K JN-IPS280UHD60F-P-W VM-UHD28MF
Energy class F F F
Screen size 28″ (71.1 cm) 28″ (71 cm) 28″ (71.1 cm)
Power in on mode (SDR) 27 W 25 W 25 W
Energy class (HDR) G G –
Power in on mode (HDR) 46 W 33 W –
Standby 0.4 W 0.2 W 0.3 W
Off mode 0.3 W – –
Resolution 3840 × 2160 3840 × 2160 3840 × 2160
Aspect ratio 16:9 16:9 16:9
Panel LED LCD LED LCD LCD
Refresh rate 60 Hz 60 Hz 60 Hz
Power supply Internal External Internal
Guaranteed support 7 years 8 years 3 years
Software updates 8 years 8 years 3 years
Spare parts available 7 years 8 years 3 years
On the market since January 29, 2018 April 1, 2026 May 23, 2024
EPREL registration number 404837 2657290 1951856

Rows where the models differ are highlighted.