Used for up to 30 days. Returned product in damaged original packaging. Complete with undamaged accessories/parts.
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According to our monitor expert
With the AOC CU34G4Z Quad HD 34 inches ultrawide curved gaming monitor, you can play games with a lot of screen space and smooth images. Thanks to the ultrawide screen, you can see even more of your favorite game. The curved screen curves around your field of view. That way, you miss nothing of what happens in your virtual world. Thanks to the 240Hz refresh rate, you can move through your game superfast. You're not bothered by screen tearing thanks to the 1ms response time. You can also enjoy sharp details thanks to the Quad HD resolution. You see more colors and details in light and dark scenes of your game thanks to DisplayHDR 400 support. You can also tilt, turn, or adjust the monitor in height to game comfortably without getting a sore neck or back. Have an NVIDIA video card? G Sync adjusts the fps of your video card to the refresh rate of your monitor.
Note: the maximum refresh rate via HDMI is 144Hz. For 240Hz gaming, connect the monitor via DisplayPort.
Sharpness | Quad HD (1440p) | |
Curved | ||
Aspect ratio | Ultrawide (21:9) | |
Refresh rate | 240 Hz | |
Response time | 1 ms | |
Panel type | VA panel | |
Color depth | 1 billion colors (10-bit) | |
Built-in speakers |
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From the moment I plugged in the AOC CU34G4Z, I was impressed. The colors are vibrant, the viewing angles are good, and the speed… incredible. I didn't know 240Hz would make such a difference. Even simple browsing and scrolling suddenly feels super responsive. While gaming (I mainly play competitive shooters), you notice you're just a little bit faster. Everything moves more smoothly, and combined with the ultrawide angle, you see more of the playing field. But this screen is also a breath of fresh air for video editing and productivity. I can display two windows side by side without feeling cramped. The stand is stable, and it's great that it's height-adjustable. You can just feel that this screen is built with quality. The price is steep, but honestly, it's a truly beautiful screen.
Robin95
15 September 2025
Automatically translated from Dutch
Great screen. Both the image quality and the screen itself are excellent. The USB hub is in a somewhat awkward position and doesn't have built-in speakers, though most gamers won't miss them much.
The image quality is perfect for me. Since I'm not a fan of OLED, I was very happy that an LCD screen of this size and curved design was still being made. All in all, a great screen for a great price.
DOME85
8 September 2025
Automatically translated from Dutch
The AOC G4 CU34G4Z 34" Ultrawide QHD 240Hz combines work and gaming on a single screen. Its ultrawide 21:9 QHD panel offers ample space for running multiple windows side by side, ideal for multitasking. Thanks to its 240Hz refresh rate and 1ms response time, it also performs excellently with fast-paced games, with smooth images and sharp details. The VA panel provides beautiful contrast, and the slight curvature increases viewing comfort. Downsides include the lack of a USB-C port and built-in speakers, and the large base that takes up a lot of desk space. Nevertheless, this remains a versatile and powerful monitor for both productivity and entertainment.
Gijs
12 September 2025
Automatically translated from Dutch
Product number | 966890 | |
Manufacturer code | CU34G4Z | |
Brand | AOC | |
Warranty | 3 years | |
Processing of your defect | Via Coolblue |
Recommended display resolution | 3440x1440 | |
Sharpness | Quad HD (1440p) | |
Aspect ratio | Ultrawide (21:9) | |
Refresh rate | 240 Hz | |
Response time | 1 ms | |
Panel type | VA panel | |
Local dimming | ||
HDR support | ||
Contrast ratio | 2500 | |
Touchscreen | ||
Type of HDR | DisplayHDR 400 | |
Screen reflection | Anti-glare | |
Blue light filter | ||
Flicker-free technology | ||
Color space | Adobe RGB, DCI-P3, sRGB | |
Adobe RGB color coverage percentage | 88,7 % | |
sRGB color coverage percentage | 130,3 % | |
Color depth | 1 billion colors (10-bit) | |
Adaptive Sync | ||
Resolution width | 3440 pixels | |
Resolution height | 1440 pixels | |
Anti-reflection type | Anti glare | |
Horizontal viewing angle | 178 ° |
Height | 53,47 cm | |
Width | 80,1 cm | |
Depth | 26,94 cm | |
Weight | 8,62 kg | |
Color | Black | |
Including stand | ||
Material | Metal, Plastic | |
Cable management | ||
Appearance | Gaming | |
Curved |
Number of HDMI connectors | 2 | |
Number of Female HDMI type A 2.1 ports | 2 | |
Number of headphone jacks | 1 | |
Type of headphone connection | 3.5mm (TRRS) | |
Number of Female Standard DisplayPort 1.4 ports | 1 | |
Number of female standard USB-A ports | 2 | |
Female standard USB-A port version | 3.2 | |
Number of female 3.5mm TRRS Audio Jack ports | 1 | |
Type of USB port | Standard USB-A | |
Number of USB ports | 2 | |
Suitable for daisy chaining | ||
USB-C dock |
Included by default | DisplayPort cable, HDMI cable, USB cable |
Adjustable in height | ||
Tiltable | ||
Pivotable stand | ||
Pivot function | ||
VESA mount option | ||
VESA mount | 100x100mm |
Energy label | F | |
Energy consumption standby | 0,5 W | |
Energy consumption active | 43 W | |
Energy consumption per 1000h | 31 kWh | |
Annual energy consumption | 45,26 kWh | |
Annual energy costs | 18,1 euros |
Built-in speakers | ||
Webcam | ||
Split screen | ||
Kensington lock |
Recommended for use | Gaming, Internet, email, and text processing, Watching movies in Full HD |
