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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.

  • iiyama XUB2293HS-B6 €7.57
  • SKitphrati HD-215 €4.34
  • Zeuslap Z21Lite €6.02
Model iiyama XUB2293HS-B6 SKitphrati HD-215 Zeuslap Z21Lite
Running cost
Running cost (per year) €7.57 €4.34 €6.02
over 10 years €76 +€32 over 10 years €43 €60 +€17 over 10 years
kWh per year 26.7 15.3 21.2
kg CO₂e per year from electricity use 5.6 3.2 4.5
Specifications
Brand iiyama SKitphrati Zeuslap
Model XUB2293HS-B6 HD-215 Z21Lite
Energy class D D C
Screen size 21″ (54.5 cm) 21″ (55 cm) 21″ (54.6 cm)
Power in on mode (SDR) 12.2 W 7 W 9.7 W
Standby 0.4 W 0.5 W 0.4 W
Off mode 0.3 W 0.3 W 0.3 W
Resolution 1920 × 1080 1920 × 1080 1920 × 1080
Aspect ratio 16:9 16:9 16:9
Panel LED LCD LCD LCD
Refresh rate 60 Hz 60 Hz 100 Hz
Power supply Internal Internal External
Guaranteed support 7 years 5 years 1 year
Software updates 8 years 5 years 1 year
Spare parts available 7 years 5 years 1 year
On the market since June 1, 2024 July 14, 2025 April 14, 2026
EPREL registration number 2013357 2415190 2692426
Energy class (HDR) – D –
Power in on mode (HDR) – 7 W –
Networked standby – 0 W 0 W

Rows where the models differ are highlighted.