The AOC CU34P2C monitor is completely black. The finishes are very good and the matte black plastic seems made to last. Its foot is quite imposing (27.5 x 27.5 cm).
The AOC CU34P2C offers height adjustment over 15 cm and tilt between -5 and +23°. The foot is also rotatable over ±180° via a buffer located under the entire plinth. However, there is no portrait orientation – a rare and almost useless feature on a widescreen monitor.
Like the front, the rear is as understated as possible. The connectors are oriented downwards, with the exception of the two USB ports on the edge. At the base of the foot, there is a basic cable management system that allows them to be grouped in the same place.
The connection consists of an HDMI 2.0 input, a DisplayPort 1.2, a USB-C port delivering 65 W, two USB 3.0 ports and a headphone output. There are also two USB 3.0 ports on the edge, very practical for connecting a storage device such as a USB key or a hard drive. It also has two 3 W speakers whose quality is not exceptional, but sufficient for watching short videos.
Remember that the USB-C port allows you to charge the laptop, to use the two USB 2.0 ports located at the back to connect a keyboard and a mouse, for example, as well as the two USB 3.0 ports located on the edge and send the video signal to the screen. In short, a single cable is enough and allows you to transform the monitor into a kind of docking station. The screen can thus display clone that of the computer or extend its display. The 65 W of the USB-C port charges almost all laptops on the market. Only the most powerful computers, such as the 14-, 15- and 16-inch MacBook Pros, whose original power supply delivers more than 85 watts, may be hindered. In fact, it works perfectly and the integrated battery takes over during heavy loads.
To modify the settings, AOC opts for five buttons, a much less practical system than the clickable joystick present in many competitors… and even on certain AOC monitors (like the AOC Agon Pro AG274QXM to name but one). The dated menus don’t help matters and the interface is worthy of the 90s. In short, it’s not necessarily pleasant to change the settings on this monitor.
The AOC CU34P2C is quite comfortable on our 120 x 80 cm desk. The 27.5cm leg depth isn’t too much of a problem on an 80cm deep desk, but it will still take up a lot of space on a shallower desk. The Ultra Wide Quad HD definition of 3440 x 1440 px is still as pleasant to use, whether for office tasks with a comfortable workspace or in games where this definition remains in the good average for modern graphics cards. The resolution remains average with 110 pixels per inch, but sufficient with a step back of 60 cm. It is still necessary to provide a powerful card to correctly exploit this definition at a frequency of 100 Hz.
Colors and contrast
Out of the box and without changing the settings, the AOC CU34P2C displays a quality image. The color temperature curve is stable over the entire spectrum and the average measured at 6820 K is close to the reference 6500 K (video standard). The gamma curve also displays a nice stability, with an average similar to the target value (2.2). Finally, the colors can be considered faithful, since the average delta E is measured at 2 – a value below 3, the threshold below which the human eye no longer perceives colorimetric drifts. Only the blue drift (5.9) remains visible. Once the brightness is lowered to 23 – to obtain a white at 150 cd / m² – the measurements taken remain very close. The gamma remains at 2.2 while the color temperature is slightly fairer (6800 K). After calibration, the flawless rendering with an average Delta E of 1.1 and no shade that exceeds 3. The average color temperature goes to 6530K and the gamma is still perfect. You can download the color profile in ICC format by clicking on this link.
This monitor displays excellent contrast. Black down to 0.04 cd/m² translates to a ratio of over 3600:1. The AOC CU34P2C doesn’t do as well as the best VA monitors, like the MSI Optix MAG271CR, the Philips BDM4037UW or the Huawei MateView GT 34, whose contrast exceeds 4000:1, but it displays a significantly better contrast than the AOC CU34P2C. monitors equipped with an IPS panel. This results in sufficiently deep blacks, even in the dark.
The average difference in brightness homogeneity is measured at 10% over the entire 34-inch panel. Note in passing that the model we tested was not affected by any phenomenon of clouding.
This screen does not use pulse width modulation (PWM or “Pulse width modulation“) to manage the LEDs of the backlighting system, which makes it possible to reduce the brightness without risking a flickering effect then causing eye fatigue and headaches for people who are sensitive to it. This feature is commonly called flicker-free. It also includes a blue light reduction mode via software setting.
This monitor is compatible with FreeSync Premium between 48 and 100 Hz and therefore works best when the graphics card sends between 48 and 100 frames per second. We will still recommend a high-performance graphics card (such as the GeForce RTX 3070 Ti or the Radeon RX 6700 XT) in order to take advantage of the native Ultra Wide Quad HD definition and a very high frame rate. In all cases, the fluidity is there and the image does not suffer from tearing problems (tear) or jerks (micro-stuttering).
We measured the afterglow time at 9.5 ms with theoverdrive (“Superintensive” in OSD) set to “Medium”. By pushing theoverdrive at the maximum level (Strong), an effect of reverse ghosting appears. The AOC CU34P2C is a little less responsive than the Iiyama GB3461WQSU-B1, with its afterglow time of 8 ms, but it is not a monitor dedicated to gaming and this value remains quite correct for an occasional gamer . Only Samsung models such as the Odyssey G7 27 or the 49G9 do really better and offer an afterglow time limited to 4.5 ms, but they are aimed at competitive gamers and e-sports enthusiasts. The display delay is measured at 11.3 ms at 60 Hz, a very low value which results in an almost zero lag between the action performed with the mouse or keyboard and its impact on the screen.