EnergyLabelEU
EN
Costs for 0.283 €/kWh · Eurostat 2026 H1

Monitors · 34″ · 3440×1440 · LED LCD

Dell S3423DWC

F

Uses less electricity than 53% of the 1,482 monitors, 32–42″ on the EU register. At your selected price (European Union) that is €13 a year, €128 over ten years.

Power, SDR
31.0 W
Typical 31 W
Running cost
€13 / year
4 h a day

Near the middle of its group: 1 % below the typical 46 kWh. Class F is the most common class in this group (51% of models). On-mode power in SDR is 31.0 W; the typical screen of this size draws 31.5 W. Dell has 25 models in this group; this one is number 11 among them. On the register since 2022 and still on sale.

Where it stands

Rank 531 of 1,482 monitors, 32–42″ by yearly consumption. 530 use less.

Median 46 This model · 45 5 135 kWh ← uses less · uses more →

Next to it in the ranking

  1. F Lenovo T34w-30(A223403T0) 45 kWh same
  2. F Philips 34M1C5500VA 45 kWh same
  3. F Dell S3423DWC 45 kWh
  4. F LG 34WQ60C 45 kWh same
  5. F LG 34WP65G 45 kWh same
See the full ranking

What it will cost you

Period S3423DWC LX34 ZA Difference
1 year €13 €2 −€10
5 years €64 €12 −€52
10 years €128 €24 −€105
15 years €192 €35 −€157

Is the more efficient model worth its price?

Years of use

Enter both purchase prices to see the total cost of ownership.

Power in SDR and HDR

Cost by viewing time

Use kWh / yr € / yr
2 hours a day 23 €6
4 hours a day 45 €13
8 hours a day 91 €26

Same size, lower running cost

On sale, at least 10% less energy, same size group

Model SizeSDR W kWh / yr Saves / year in 10 years
F Dell S3423DWC (this model)
34″31.0 45 — —
34″5.7 8 €10 €105
34″5.7 8 €10 €105
34″8.0 12 €10 €95
34″15.9 23 €6 €63
34″20.0 29 €5 €46

Label and product sheet

Energy class SDR / HDR
F / –
On-mode power SDR
31.0 W
Standby / networked standby
0.4 W
Screen diagonal
34″
Resolution
3440×1440
Panel
LED LCD
Refresh rate
60 Hz
Software updates (minimum)
8 years
Guarantee (supplier)
3 years
Spare parts (minimum)
7 years

Model numbers and history

Registered by Dell under one model number.

S3423DWC

  1. First published in the EU register (EPREL)
  2. Placed on the EU market

Questions

How much does the Dell S3423DWC cost to run?

At 4 hours a day it uses about 45 kWh a year according to its EU energy label. At the EU average household price of 0.283 €/kWh that is about €13 a year, or €128 over ten years.