AOC E4 CU34E4CW 34″ 120Hz Monitor

34 inch · 3440 x 1440 · 120 Hz · VA

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Screen size 34 inch
Resolution 3440 x 1440
Refresh rate 120 Hz
Panel VA
Response time 4 ms

AOC E4 CU34E4CW 34″ 120Hz Monitor is a 34-inch monitor with 3440 x 1440 resolution, a 120 Hz refresh rate and VA panel. Fine for work and everyday use; for fast shooters look at 144 Hz and up. It came out in 2025.

Released: 2025-07-20

Specifications

Key specs

Screen size: 34 inch
Resolution: 3440 x 1440
Refresh rate: 120 Hz
Panel: VA
Response time: 4 ms
Released: 2025-07-20
Part number: CU34E4CW

Display

Display diagonal: 86.4 cm (34")
Display resolution: 3440 x 1440 pixels
HD type: UltraWide Quad HD
Native aspect ratio: 21:9
Display technology: LED
Panel type: VA
LED backlight: Yes
Backlight type: W-LED
Display brightness (typical): 300 cd/m²
Response time: 4 ms
Response time measurement type: GTG (Gray to Gray)
Response time (MPRT): 1 ms
Anti-glare screen: Yes
Screen shape: Curved
Screen curvature rating: 1500R
Contrast ratio (typical): 3500:1
Contrast ratio (dynamic): 50000000:1
Maximum refresh rate: 120 Hz
Viewing angle, horizontal: 178°
Viewing angle, vertical: 178°
Display number of colours: 1.07 billion colours
Pixel pitch: 0.23175 x 0.23175 mm
Pixel density: 109.68 ppi
Digital horizontal frequency: 30 - 190 kHz
Digital vertical frequency: 48 - 120 Hz
Display diagonal (metric): 86.36 cm
High Dynamic Range (HDR) supported: Yes
High Dynamic Range (HDR) technology: High Dynamic Range 10 (HDR10)
Haze rate: 25%
Surface hardness: 3H
Colour gamut standard: sRGB
sRGB coverage (typical): 120.6%

Performance

VESA Adaptive Sync support: Yes
Flicker-free technology: Yes
Low Blue Light technology: Yes

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Multimedia

Number of speakers: 2
RMS rated power: 10 W
Built-in speaker(s): Yes
Megapixel (approx.): 5 MP
Built-in camera: Yes

Design

Market positioning: Office
Product colour: Black
Frameless design: Yes
Front bezel colour: Black
Detachable stand: Yes

Ports & interfaces

Built-in USB hub: Yes
USB hub version: 3.2 Gen 1 (3.1 Gen 1)
USB upstream port type: USB Type-C
Number of upstream ports: 2
Number of downstream ports: 4
Number of USB Type-C upstream ports quantity: 2
USB Type-A downstream ports quantity: 4
USB Type-C DisplayPort Alternate Mode: Yes
USB Power Delivery (USB PD): Yes
USB Power Delivery up to: 90 W
HDMI: Yes
HDMI ports quantity: 2
HDMI version: 2.1
DisplayPorts quantity: 1
DisplayPort version: 1.4
Audio output: Yes
Headphone out: Yes
Headphone outputs: 1
Built-in KVM switch: Yes
HDCP: Yes
HDCP version: 1.4/2.2

Network

Ethernet LAN: Yes

Ergonomics

VESA mounting: Yes
Panel mounting interface: 100 x 100 mm
Cable management: Yes
Cable lock slot: Yes
Cable lock slot type: Kensington
Height adjustment: Yes
Adjustable height (max): 18 cm
Swivelling: Yes
Swivel angle range: -180 - 180°
Tilt adjustment: Yes
Tilt angle range: -5 - 21°
Picture-in-Picture: Yes

Power

Energy efficiency class (SDR): D
Energy efficiency class (HDR): G
Energy consumption (SDR) per 1000 hours: 20 kWh
Energy consumption (HDR) per 1000 hours: 46 kWh
Power consumption (typical): 38 W
Power consumption (standby): 0.5 W
Power consumption (off): 0.3 W
Power supply type: Internal
Energy efficiency scale: A to G

Weight & dimensions

Width (with stand): 808.8 mm
Depth (with stand): 252.2 mm
Height (with stand): 581.6 mm
Weight (with stand): 10.1 kg
Width (without stand): 365.4 mm
Depth (without stand): 101.5 mm
Height (without stand): 365.4 mm
Weight (without stand): 7.33 kg

Other features

Local dimming: Yes
Warranty period: 5 year(s)
Bezel thickness type: Frameless
Compliance certificates: CE
Certification: WEEE,REACH compliant,RoHs compliant,HF,CB,TUV-GS-Mark,TUV Ergo,EAC,FCC

Recycling data

Product post-consumer recycled plastic: 85%

Technical details

Native refresh rate: 60 Hz

Check the manufacturer's page before buying.

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About this product

Maximize productivity with the CU34E4CW 34" WQHD monitor Experience the power of performance with the CU34E4CW. This 34" UWQHD monitor delivers stunning visuals at a smooth 120Hz refresh rate, enhanced by Hardware Anti-Blue Light and HDR10 for eye comfort and vivid clarity. Equipped with a 90W PD docking station, Smart KVM for seamless device control, and a built-in 5MP webcam, it's the all-in-one solution for modern multitasking and efficient hybrid workspaces.

User manual (PDF)

CU34E4CW vs similar monitors

	AOC E4 CU34E4CW 34″ 120Hz Monitor	AOC CU34E4CW/75 34″ 120Hz Monitor	AOC CU34E4C 34″ 120Hz Monitor	Lenovo L34W-4C Monitor
Screen size	34 inch	34 inch	34 inch	34 inch
Resolution	3440 x 1440	3440 x 1440	3440 x 1440	3440 x 1440
Refresh rate	120 Hz	120 Hz	120 Hz	120 Hz
Panel	VA	VA	VA	VA
Response time	4 ms	4 ms	4 ms	4 ms
Released	2025	2026	2026	2026