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3 TVs side by side.

4 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.

  • Tdsystems K50DLX14GLQ €20.67
  • Topmax TM500K2 €6.20
  • Toshiba 50QF2663DAZ €14.88
Model Tdsystems K50DLX14GLQ Topmax TM500K2 Toshiba 50QF2663DAZ
Running cost
Running cost (per year) €20.67 €6.20 €14.88
over 10 years €207 +€145 over 10 years €62 €149 +€87 over 10 years
kWh per year 73 21.9 52.6
kg CO₂e per year from electricity use 15 4.6 11
Specifications
Brand Tdsystems Topmax Toshiba
Model K50DLX14GLQ TM500K2 50QF2663DAZ
Energy class E C C
Screen size 50″ (126 cm) 50″ (126 cm) 50″ (126 cm)
Power in on mode (SDR) 50 W 15 W 36 W
Energy class (HDR) E – G
Power in on mode (HDR) 51 W – 66 W
Standby 0.5 W 0.5 W 0.5 W
Networked standby 0 W – 2 W
Off mode 0 W 0.3 W –
Resolution 3840 × 2160 3840 × 2160 3840 × 2160
Aspect ratio 16:9 16:9 16:9
Panel QLED LCD LED LCD QLED LCD
Refresh rate 60 Hz 60 Hz 50 Hz
Power supply Internal External Internal
On the market since January 1, 2022 July 13, 2022 January 15, 2026
EPREL registration number 898850 1279608 2570132
Guaranteed support – 7 years 7 years
Spare parts available – 8 years 7 years
Software updates – – 8 years

Rows where the models differ are highlighted.