Asus VG23AH 23inches passive 3D Monitor: Review, Specs and Features

Equipped with a high quality IPS panel, the monitor Asus VG23AH also has a polarized 3D display technology more questionable.

Asus VG23AH

The promise

The Asus VG23AH is 23 inches rather unusual: it is the first monitor with an IPS ( In-Plane Switching ) and a display technology in relief. We’re talking about a 3D polarized “passive”. The screen is not a 120 Hz, there is no active 3D.


Asus VG23AH monitor has finished side, there is not much wrong with this monitor. Its design is rather basic and simple. The assembly of the plastic housing is suitable. The only regret is the choice of glossy black to dress up the front of the screen: we could have done it creates reflections. However, with honors for the monitor stand, which adjusts the height of the display.

A very good image rendering

Asus VG23AH

This Asus VG23AH monitor provides a crisp image copy. Its LCD panel is very well calibrated at the factory and requires no adjustment for color very loyal and shades of gray perfectly disciplined. And the rendering mode “sRGB” of Asus VG23AH is even more precise, to activate your eyes closed! Moreover, the IPS offers wide viewing angles.

The fault at this screen comes down to its contrast ratio, a little low (934:1 at best). This is a typical characteristic of IPS panels, but not quite homogeneous. It is therefore recommended to limit the intensity to 45% for a brightness of 121 cd / m 2 on average and thus homogenize the brightness of the black over the entire surface of the display.

Side persistence, the display of this Asus VG23AH monitor is less swift than the other IPS panels from Asus, as PA248Q and PA238Q . It remains a good student in the area and will suit most players. Only the most discerning will notice a lack of image sharpness in video games very fast.

A 3D passive unconvincing

3D rendering of Asus VG23AH matches that of all passive 3D displays for PC. Its qualities are simple: it displays images potentially net, without duplication, and looks easily without eyestrain. It suffers from several shortcomings, however daunting. First, it divides the vertical resolution of the image by two (an image 1920 x 1080 is displayed at 1920 x 540 pixels).

It is mostly limited viewing angles too close. The user is forced to watch the screen in a specific position, without moving, to see the entire image without any duplication. If it is too close (within 1 m) he will see an image partially split. It is therefore imperative to stand over 1.5 m from the screen to see the entire 3D image so clear. And at that distance, a 23-inch screen is rather face stamp!

Another problem is that this technology is not compatible with nVidia’s 3D Vision solution, which requires an active 3D technology to work. To play, you need to go through the open solution TriDef, less polished. By connecting the monitor to HDMI mode, nVidia has another solution called 3D TV Play, normally reserved for 3D TV. But because of the limitations of HDMI, it will be possible to play in 1280 x 720 pixels (divided by the passive 3D 1280 x 360 pixels!). The 3D Full HD is limited to 24 frames per second via HDMI, that’s enough for Blu-ray but video games are unplayable at this rate.

Last problem of 3D passive polarizing filter which covers the entire display of the screen. It is supposed to be completely invisible to the naked eye, but sometimes it sees as light horizontal black lines in office use, especially on white backgrounds. It’s not really embarrassing, but still a shame, especially with an IPS panel made to excellent quality.


Asus a hit on the equipment of this monitor. Apart from its advanced foot, Asus VG23AH has two HDMI inputs, input and output 3.5mm audio jack, built-in speakers (but not very powerful), and a good setup menu. Also the power consumption is relatively well contained: 0.2 W in off, standby 0.7 W, 34.2 W and running.

The verdict

With Asus VG23AH, Asus sign a 3D monitor … very powerful 2D. Its IPS panel is perfectly adjusted and its interface is neat, two details that make it win hands down its four stars. But its 3D display polarized wastes a little table. It still prefers the active 3D monitors that dominate our overall comparative permanent 3D screens despite their less accurate image rendering in 2D.

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