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

Monitors · 34″ · 3440×1440 · LCD

Cooler Master GM34-CW

G

Uses less electricity than 8% of the 1,482 monitors, 32–42″ on the EU register. At your selected price (European Union) that is €16 a year, €158 over ten years.

Power, SDR
38.2 W
Typical 31 W
Running cost
€16 / year
4 h a day
Power, HDR
47.7 W
1.2× SDR

Uses more than most comparable models: 92 % of them need less. LXZ LX34 ZA, the most efficient alternative on sale, saves about €13 a year. 73% of comparable models reach a better class than G; the most common is F. In HDR it draws 47.7 W, 1.2 times its SDR power. Of 5 Cooler Master models in this group, it ranks last. On the register since 2021 and still on sale.

Where it stands

Rank 1,344 of 1,482 monitors, 32–42″ by yearly consumption. 1,343 use less.

Median 46 This model · 56 5 135 kWh ← uses less · uses more →

Next to it in the ranking

  1. G LG 34UM69G 56 kWh same
  2. G FOX SPIRIT PGM340 V2 56 kWh same
  3. G Cooler Master GM34-CW 56 kWh
  4. G LC-Power LC-M34-UWQHD-144-C-V2 56 kWh same
  5. F Titan Army P40UG 56 kWh +€0.03
See the full ranking

What it will cost you

Period GM34-CW LX34 ZA Difference
1 year €16 €2 −€13
5 years €79 €12 −€67
10 years €158 €24 −€135
15 years €237 €35 −€202

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

SDR 38.2 W
HDR 47.7 W
Group median, SDR 31.5 W

Cost by viewing time

Use kWh / yr € / yr
2 hours a day 28 €8
4 hours a day 56 €16
8 hours a day 112 €32

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
G Cooler Master GM34-CW (this model)
34″38.2 56 — —
34″5.7 8 €13 €135
34″5.7 8 €13 €135
34″8.0 12 €12 €125
34″15.9 23 €9 €92
34″20.0 29 €8 €75

Label and product sheet

Energy class SDR / HDR
G / G
On-mode power SDR
38.2 W
On-mode power HDR
47.7 W
Standby / networked standby
0.3 W
Screen diagonal
34″
Resolution
3440×1440
Panel
LCD
Refresh rate
144 Hz
Spare parts (minimum)
7 years

Model numbers and history

Registered by Cooler Master under one model number.

GM34-CW

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

Questions

How much does the Cooler Master GM34-CW cost to run?

At 4 hours a day it uses about 56 kWh a year according to its EU energy label. At the EU average household price of 0.283 €/kWh that is about €16 a year, or €158 over ten years.

Does HDR use more electricity?

Yes. In HDR mode this screen draws 47.7 W instead of 38.2 W, 1.2 times as much. The yearly cost on this page uses SDR, as the label does.