AOC CU34B3E
- Monitors
- 34″
- QHD
- LCD / LED
Uses about as much energy as the average for 34-inch monitors on Wattabill (558 models).
Running cost at a glance
- €19.66 per year
- €197 over 10 years
- 67.9 kWh per year
- 14 kg CO₂e per year from electricity use
Your country and usage
- Electricity at €0.2896 per kWh (household price with taxes, Eurostat 2025-S2).
- 210 g CO₂e per kWh generated in 2023 (European Environment Agency). Counts use only, not manufacturing.
We assume prices stay the same over the years.
Electricity prices in all EU countries
Same size and resolution, cheaper to run
Models on the market with the same screen size and resolution as the AOC CU34B3E that use at least 5% less energy.
About this model
Text from the manufacturer, via Icecat.
Immersive ultrawide clarity with fluid performance and curved comfort
The CU34B3E elevates your workflow with its expansive 34" WQHD ultrawide display, offering exceptional clarity and a wider field of view for seamless multitasking. Its curved design enhances visual comfort, drawing you deeper into your content. With a fast 120Hz refresh rate and 1ms response time, every motion appears smoother and more responsive—perfect for both productivity and entertainment. Adaptive Sync ensures a tear-free visual experience, making this monitor a versatile addition to any modern workspace.
Specifications
| Brand | AOC |
|---|---|
| Model | CU34B3E |
| Energy class | F |
| Screen size | 34″ (86.4 cm) |
| Power in on mode (SDR) | 31 W |
| Energy class (HDR) | G |
| Power in on mode (HDR) | 46 W |
| Standby | 0.3 W |
| Off mode | 0.3 W |
| Resolution | 3440 × 1440 |
| Aspect ratio | 21:9 |
| Panel | LED LCD |
| Refresh rate | 60 Hz |
| Power supply | Internal |
| Guaranteed support | 8 years |
| Software updates | 8 years |
| Spare parts available | 7 years |
| On the market since | December 31, 2025 |
| EPREL registration number | 2550138 |
Source: EPREL, European Commission. Data updated October 13, 2026.
Product description and images: Icecat (Open Icecat), provided as is, without warranty.