Why You Can Trust CNET

Our expert, award-winning staff selects the products we cover and rigorously researches and tests our top picks. If you buy through our links, we may get a commission. Reviews ethics statement

Asus VS239H review: Asus VS239H

The VS239H is a standard monitor that "does the job", albeit with a cheaper IPS screen, rather than the inferior TN. If you have basic needs, this may see you through — just be aware of the limited defective pixel policy.

Craig Simms

Craig Simms

Special to CNET News

Craig was sucked into the endless vortex of tech at an early age, only to be spat back out babbling things like "phase-locked-loop crystal oscillators!". Mostly this receives a pat on the head from the listener, followed closely by a question about what laptop they should buy.

See full bio
4 min read

With the introduction of E-IPS, getting good quality imagery doesn't necessarily require robbing a bank first.


Asus VS239H

The Good

Affordable IPS screen. With a little search, you can pick it up for under AU$170. Decent warranty term.

The Bad

Buttons can be frustrating. Display a little too sharp. Not great for standalone HDMI device input. Limited defective pixel policy.

The Bottom Line

The VS239H is a standard monitor that "does the job", albeit with a cheaper IPS screen rather than the inferior TN. If you have basic needs, this may see you through — just be aware of the limited defective pixel policy.

Asus' VS239H is such a beast, bringing 23-inches of IPS technology, with 1920 horizontal pixels and 1080 vertical. You're not going to find excessive inputs here or extra fancy features — this is a monitor aimed at fulfilling most people's basic needs, while still giving a decent picture.

(Credit: Craig Simms/CNET)

Specs at a glance

Size 23 inches
Resolution 1920x1080
Aspect ratio 16:9
Pixel pitch 0.265
Panel technology IPS
Viewing angles
(10:1 contrast)
H: 178°
V: 178°
Response time 14ms — although Asus doesn't mention what method it used to measure.
Max vertical refresh 60Hz
Connections DVI, HDMI, VGA, 3.5mm line out
Accessories DVI, VGA, power cables

Stand and ergonomics

Unless you're Dell, most monitor manufacturers don't offer a full range of motion in their stands, offering tilt only. Here, Asus is no exception. You won't find any cable management either, although the horizontally angled ports do go some way in reducing the appearance of clutter.

Asus' stand is exceedingly simple.
(Credit: Craig Simms/CNET)


Power, HDMI, DVI, VGA and 3.5mm line out.
(Credit: Craig Simms/CNET)

Buttons and on-screen display (OSD)

Asus mounts its buttons under the monitor, labelling them on the front of the screen. You'll have to operate by muscle memory, especially in the dark — the layout of the buttons don't feel particularly natural.

It's easy to win this one, vendors: front mount the buttons, back-light them and make the menu context sensitive.
(Credit: Craig Simms/CNET)

The OSD is a simple menu driven affair, with categories on the left and options on the right. Asus doesn't really stray from the basic formula of brightness, contrast, sharpness and a couple of presets. We recommend you skip them all, set the monitor to "Standard" mode from the "Splendid" menu option, then hit up the "Color" section and adjust RGB values yourself through the "Color Temp" option.

A straightforward OSD for a straightforward monitor.
(Credit: Craig Simms/CNET)


Lagom.nl LCD tests

After calibrating to a target brightness of 140cd/m² with an X-Rite i1Display 2, Eye-One Match 3 and tweaking with HCFR, the VS239H was run through the Lagom.nl LCD tests.

Image tests
Contrast Sharpness Gamma Black level White saturation Gradient
Pass Too sharp Pass Pass Pass Very slight banding towards the dark end of the scale.

Asus' screen marches through the image tests, only slightly stumbling with gradients and providing an image that's slightly too sharp. The OSD prevents sharpness adjustments, unless you're using the VGA port, so there's nothing that can be done here.

Inversion pixel walk tests
Test 1 Test 2a Test 2b Test 3 Test 4a Test 4b Test 5 Test 6a Test 6b Test 7a Test 7b
Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass

The VS239H is the only monitor we've tested to pass all inversion pixel walk tests — most usually fail anywhere between one and four. Though there is very faint motion across each pattern, there's no visible flickering.

Input lag

Measured against a Samsung SyncMaster 975p CRT and using a Canon 40D set to a shutter speed of 1/320, an average of over 60 photographs were taken using StoppUhr. Lag time was completely negligible — the Asus VS239H would make a decent gaming monitor if you're not fixated on 120Hz.

HDMI performance

While a monitor might have an HDMI port, there's no guarantee that it'll display images as expected. We hooked up a PlayStation 3 and checked for 24p capability and judder, as well as running the HQV Blu-ray test to see how well it coped with an interlaced source and noise.

24p capable Understands YUV Mission: Impossible III
scene 11 judder test
Mission: Impossible III
scene 14 judder test
No Yes Judder Judder
HQV noise
HQV video
resolution loss
HQV jaggies
HQV film
resolution loss
HQV film
resolution loss —
stadium score
Total score
out of 100
0 0 0 0 0 0

While a 1080i source does subjectively look better, if softer on the Asus than some other monitors, it doesn't pass muster on any of the HQV tests. 24p isn't supported either — this is a monitor best kept for gaming at most; a standalone video player is unlikely to cope well unless it has its own filters built in.

Viewing angles

Viewing angles were taken with a Canon 40D in spot-metering mode, with only shutter time adjusted to obtain a good exposure.

Viewing angles are better than TN, as you'd expect from an IPS monitor, however horizontals don't appear to be as good as those on premium IPS panels.
(Credit: Craig Simms/CNET)

Light bleed

Our review sample had two points of obvious light bleed from the right hand side when a completely black screen was displayed.

It's important to note that the effects of light bleed will likely change from monitor to monitor, regardless of make.

Power consumption

We measured power consumption using a Jaycar mains digital power meter. It's important to note here that, due to limitations of the meter, measurements are limited to values of 1W and greater, and are reported in 1W increments.

All measurements, screen brightness and contrast were set to 100 per cent, and a test image was displayed.

Juice Box
Maximum power draw 27W
Power-saving mode <1W< td="">
Off <1W< td="">

Asus' monitor is reasonably frugal, considering its size, and properly goes into power saving/off modes.


Asus covers the VS239H with a three year warranty. While this is reasonably competitive, its defective pixel policy is not, requiring more than three bright dots or more than five dark dots before it will honour a warranty request.


The VS239H is a standard monitor that "does the job", albeit with a cheaper IPS screen, rather than the inferior TN. If you have basic needs, this may see you through — just be aware of the limited defective pixel policy.

Shopping laptop image
Get the best price on everything
Shop your favorite products and we’ll find the best deal with a single click. Designed to make shopping easier.
Add CNET Shopping