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Reviewed on Sep 14, 2018 , Ian Cumming, Yannick Khong

ASUS ROG SWIFT PG348Q
MONITOR REVIEW

Usage Ratings - Version 1.0

Test Benches: test

  • 1.0: Fall 2017
7.6
Mixed Usage
Score components:
  • 30% Office
  • 30% Multimedia
  • 25% Gaming
  • 10% Media Creation
  • 5% HDR Gaming
Size : 34 "
Resolution : 3440x1440
Refresh Rate : 60 Hz
LCD Type
What it is: Type of LCD technology used by the monitor.
When it matters: Different technologies have different viewing angle properties.
:
IPS
Variable Refresh Rate
What it is: Feature that allows the monitor to synchronize its refresh rate with the input device's output and reduces stuttering and screen tearing.
When it matters: Almost every usage, but is most noticeable in gaming where constant fluctuation in framerate cause distracting artifacts.
:
G-Sync

The ASUS PG348Q is a good mixed-use monitor with some nice gaming features. Gamers will love the low input lag, fast response time and NVIDIA G-SYNC support. The widescreen format and high resolution are great for office use, as you can place two full-sized windows side-by-side, great for multitasking. Unfortunately, it has bad black uniformity with noticeable flashlighting when placed in a dark room, and the color accuracy and white balance are disappointing out of the box.

Test Results
Design 8.0
Picture Quality 6.6
Motion 8.3
Inputs 9.0
Pros
  • Image remains accurate when viewed at an angle
  • Good gaming features like G-SYNC
  • Large, high resolution screen
Cons
  • Bad black uniformity
  • Disappointing accuracy out of the box

Check Price

8.0

Design

Score components: Subjectively assigned
ASUS ROG PG348Q Design Picture
Curved : Yes
Curve radius : 3800R
Weight (without stand) : 17.2lbs (7.8 kg)
Weight (with stand) : 24.9lbs (11.3 kg)

The ASUS PG348Q has a great design that should please most people. There are a lot of nice finishing touches on the stand that give it a unique look. The stand is well built and solid and can be easily adjusted to an ideal viewing position. Unfortunately, it can't rotate to a portrait orientation, and the legs are quite wide on a desk and prevent you from placing larger objects beneath the monitor.

Stand
ASUS ROG PG348Q Stand picture
Width : 21.0" (53.3 cm)
Depth : 13.5" (34.3 cm)

The stand on the Asus PG348Q is solid and well built. It is very heavy and supports the monitor very well with little wobble. It has a very unique, modern design. The legs take up a lot of space on a desk, and unlike most Dell monitors that have a flat base, you can't really use the space that they take up to place other items.

6.1 Ergonomics
What it is: How much the position of the screen can be adjusted to match the viewing preference of the user.
When it matters: All usages, but especially office and gaming use.
Score components:
  • 46% Height Adjustment
  • 18% Switch portrait/landscape
  • 18% Swivel Range
  • 18% Tilt Range
ASUS ROG PG348Q Ergonomics picture
Height Adjustment : 4.4" (11.3 cm)
Switch portrait/landscape : No
Swivel Range : -55° to 55°
Tilt Range : -20° to 2.5°

Decent ergonomics, it can easily be adjusted to a comfortable viewing position, but it can't be rotated to a portrait orientation.

Back
ASUS ROG PG348Q Back picture
Wall Mount : VESA 100x100

The back looks very good, with nice etched details on the back panel that add to the overall look of the monitor. It can be VESA mounted by removing the stand, which is easily done. There is a unique custom heat sink design that passively cools the monitor without the need for fans. Cable management is integrated into the stand, and it is very effective at keeping a clean desk.

Care should be taken when attaching a VESA mount, as there are exposed connections where they attach.

Borders
ASUS ROG PG348Q Borders picture
Borders : 0.5" (1.3 cm)

The borders are very thin. The Asus PG348Q is designed to be able to place two or more monitors side-by-side.

Thickness
ASUS ROG PG348Q Thickness picture
Thickness (with stand) : 10.8" (27.3 cm)
Thickness (without stand) : 4.0" (10.2 cm)

The curve of the monitor makes it appear very thick, especially when on the stand. The monitor can't be placed flush with the wall due to the stand design, but when VESA mounted it doesn't stick out as much.

8.0 Build Quality
What it is: How well built and sturdy the monitor is, and how good the materials used to build it are.
When it matters: All usages.
Score components: Subjectively assigned
ASUS ROG PG348Q Build Quality picture

Very good build quality. There are no obvious issues with the monitor and it feels well built.

The ASUS ROG PG348Q delivers decent picture quality. It has good wide viewing angles, which are helped a bit by the gentle 3800R curve. Colors look great thanks to the excellent color gamut and color volume, but print professionals will be disappointed by the limited Adobe RGB coverage. Unfortunately, the color accuracy and white balance are disappointing out of the box, but these are easily corrected with the proper settings. It doesn't support HDR and lacks a local dimming feature. It has a mediocre contrast ratio that doesn't produce true blacks, and bad black uniformity, so dark room performance isn't great.

6.3 Contrast
What it is: Brightness difference between white and black. This is the main component of picture quality.
When it matters: Always, but especially when watching dark scenes.
Score components:
ASUS ROG PG348Q Checkerboard Picture
Native Contrast
What it is: Ratio of the white brightness divided by the blacks measured on our checkerboard test pattern with a white target of 100 cd/m².
When it matters: Dark scenes in a dark room.
Good value: > 3,000
Noticeable difference: 500
:
1195 : 1
Contrast with local dimming
What it is: Ratio of the white brightness divided by the blacks measured on our checkerboard test pattern with local dimming turned on (maximum) with a white target of 100 cd/m².
When it matters: Dark scenes in a dark room.
Good value: > 3,000
Noticeable difference: 500
:
N/A

The Asus PG348Q has a mediocre contrast ratio and can't produce true blacks, which is typical for IPS monitors. It is slightly worse than the ASUS ROG PG279Q. Unfortunately, it does not have a local dimming feature that could improve the contrast ratio.

0 Local Dimming
What it is: The lights behind the LCD layer adapt to the picture displayed, improving the contrast ratio.
When it matters: Dark scenes viewed in a dark room.
Score components: Subjectively assigned
Local Dimming
What it is: Whether it has a feature that controls the LEDs behind the LCD layer, to match the picture and darkens the dark portion of it.
When it matters: On LED TVs only. Dark scenes viewed in a dark room.
:
No
Backlight
What it is: Configuration of the lights of the backlight.
When it matters: Effectiveness of the local dimming.
Good value: Full-array/direct lighting is better for local dimming. As for the uniformity of the screen, it depends on the implementation. Some edge-lit monitors have more uniform blacks than some full-array monitors.
:
Edge

The Asus PG348Q does not have a local dimming feature. The video is for reference only.

7.6 SDR Peak Brightness
What it is: How bright the screen can get. Measured with local dimming and with SDR content.
When it matters: Bright living rooms; bright objects; SDR content.
SDR Real Scene
What it is: The maximum luminosity the TV can obtain while playing a movie or while watching a TV show. Our Real Scene was selected to represent a more regular movie condition. All measurements are made with the TV set to be as bright as possible, but with a 6500k white. Measured with local dimming on, max backlight and with an SDR signal. Scene: here.
When it matters: When watching movies and TV shows in SDR.
:
294 cd/m²
SDR Peak 2% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 2% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright highlights, present on screen for a short time
:
325 cd/m²
SDR Peak 10% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 10% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright objects, present on screen for a short time
:
326 cd/m²
SDR Peak 25% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 25% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
:
326 cd/m²
SDR Peak 50% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 50% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
:
326 cd/m²
SDR Peak 100% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 100% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
:
326 cd/m²
SDR Sustained 2% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 2% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright highlights, persistent during a scene.
:
325 cd/m²
SDR Sustained 10% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 10% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright objects, persistent during a scene.
:
326 cd/m²
SDR Sustained 25% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 25% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
:
326 cd/m²
SDR Sustained 50% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 50% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
:
326 cd/m²
SDR Sustained 100% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 100% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
:
326 cd/m²
SDR ABL
What it is: The standard deviation of the SDR sustained brightness, after linearizing for noticeable differences in luminosity
When it matters: Content with large bright areas, such as for PC or video game use, and sports such as hockey
:
0.0

Good peak brightness. The monitor delivers a constant overall brightness regardless of content, which is good. Overall it isn't as bright as the ASUS ROG PG279Q.

0 HDR Peak Brightness
What it is: How bright the screen can get. Measured with local dimming and with HDR content.
When it matters: HDR content
HDR Real Scene : N/A
HDR Peak 2% Window : N/A
HDR Peak 10% Window : N/A
HDR Peak 25% Window : N/A
HDR Peak 50% Window : N/A
HDR Peak 100% Window : N/A
HDR Sustained 2% Window : N/A
HDR Sustained 10% Window : N/A
HDR Sustained 25% Window : N/A
HDR Sustained 50% Window : N/A
HDR Sustained 100% Window : N/A
HDR ABL : N/A

HDR is not supported.

7.8 Horizontal Viewing Angle
What it is: Color accuracy when viewed from the side.
ASUS ROG PG348Q Horizontal Color Shift Picture
Color Shift from Left
What it is: Angle where the colors noticeable shift compared to when viewed from directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When sharing your monitor with people on your left
Good value: > 50°
Noticeable difference: 10°
:
47 °
Color Shift from Right
What it is: Angle where the colors noticeable shift compared to when viewed from directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When sharing your monitor with people on your right
Good value: > 50°
Noticeable difference: 10°
:
47 °
ASUS ROG PG348Q Horizontal Brightness Picture
Brightness from Left
What it is: Angle where the brightness drops to 50% of the brightness directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When sharing your monitor with people on your left.
Good value: > 50°
Noticeable difference: 10°
:
53 °
Brightness from Right
What it is: Angle where the brightness drops to 50% of the brightness directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When sharing your monitor with people on your right.
Good value: > 50°
Noticeable difference: 10°
:
53 °
ASUS ROG PG348Q Horizontal Black Level Picture
Black Level from Left
What it is: Angle where the black level drops to 50% of the black level directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When sharing your monitor with people on your right.
Good value: > 50°
Noticeable difference: 10°
:
75 °
Black Level from Right
What it is: Angle where the black level drops to 50% of the black level directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When sharing your monitor with people on your right.
Good value: > 50°
Noticeable difference: 10°
:
75 °
Curve Radius : 3800 R

Good horizontal viewing angles. Black levels remain good even at very wide viewing angles, and the brightness remains constant up to a decent angle. Colors remain accurate up to a fairly wide angle. The horizontal viewing angles overall are better than the LG 34UC79G-B.

7.8 Vertical Viewing Angle
What it is: Color accuracy when viewed from the top or bottom.
ASUS ROG PG348Q Vertical Color Shift Picture
Color Shift from Below
What it is: Angle where the colors noticeable shift compared to when viewed from directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When looking at a monitor from below.
Good value: > 50°
Noticeable difference: 10°
:
25 °
Color Shift from Above
What it is: Angle where the colors noticeable shift compared to when viewed from directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When looking at a monitor when standing up.
Good value: > 50°
Noticeable difference: 10°
:
26 °
ASUS ROG PG348Q Vertical Brightness Picture
Brightness from Below
What it is: Angle where the brightness drops to 50% of the brightness directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When looking at a monitor from below.
Good value: > 50°
Noticeable difference: 10°
:
31 °
Brightness from Above
What it is: Angle where the brightness drops to 50% of the brightness directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When looking at a monitor while standing up.
Good value: > 50°
Noticeable difference: 10°
:
31 °
ASUS ROG PG348Q Vertical Black Level Picture
Black Level from Below
What it is: Angle where the black level drops to 50% of the black level directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When looking at a monitor from below.
Good value: > 50°
Noticeable difference: 10°
:
75 °
Black Level from Above
What it is: Angle where the black level drops to 50% of the black level directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When looking at a monitor while standing up.
Good value: > 50°
Noticeable difference: 10°
:
75 °

Good vertical viewing angles. The image remains accurate and bright even when viewed at a wide angle.

8.5 Gray Uniformity
What it is: Evenness of colors onscreen (not just gray).
When it matters: Solid colors. Sports, panning shots.
Score components:
ASUS ROG PG348Q 50% Uniformity Picture
50% Std. Dev.
What it is: Average squared difference of pixels when displaying a mid 50% gray.
When it matters: Solid colors. Sports, panning shots.
Good value: < 2.5%
Noticeable difference: 1%
:
3.468 %
50% DSE
What it is: High-frequency variance of uniformity. Dark spots on the screen.
When it matters: Solid colors. Sports, panning shots.
Good value: < 0.165%
Noticeable difference: 0.025%
:
0.116 %
ASUS ROG PG348Q 5% Uniformity Picture
5% Std. Dev.
What it is: Average squared difference of pixels when displaying a mid 5% gray.
When it matters: Dark scenes.
Good value: < 1.15%
Noticeable difference: 1%
:
0.326 %
5% DSE
What it is: High-frequency variance of uniformity. Dark spots on the screen.
When it matters: Dark scenes.
Good value: < 0.116%
:
0.034 %

Excellent gray uniformity. There are some darker bands visible around the edges of the screen and in the center, but overall it looks good and shouldn't be too noticeable when watching sports or browsing the web.

2.9 Black Uniformity
What it is: Evenness of blacks.
When it matters: Dark scenes viewed in a dark room.
Score components:
ASUS ROG PG348Q Native Black Uniformity Picture
Native Std. Dev.
What it is: Average of the squared difference of the blacks.
When it matters: Dark scenes viewed in a dark room.
Good value: <2%
Noticeable difference: 1%, but keep in mind that it varies a lot by unit, even of the same model; yours likely will not end up exactly like ours.
:
4.041 %
Std. Dev. w/ L.D.
What it is: Average of the squared difference of the blacks with Local Dimming enabled
When it matters: Dark scenes viewed in a dark room.
Good value: <2%
Noticeable difference: 1%, but keep in mind that it varies a lot by unit, even of the same model; yours likely will not end up exactly like ours.
:
N/A

Bad black uniformity with very noticeable flashlighting. This is worse than average for IPS monitors.

5.5 Pre Calibration
What it is: Monitor's color accuracy before a full calibration. The measurements are taken with out of the box 'factory setting'.
When it matters: All video on an uncalibrated TV. This represents most people's use cases.
Score components:
ASUS ROG PG348Q Pre Calibration Picture ASUS ROG PG348Q Pre Gamma Curve Picture ASUS ROG PG348Q Pre Color Picture
Picture Mode
What it is: The picture mode that was used to do the pre-calibration reading. We usually go for the picture mode that gives us the more control over all the picture quality setting.
:
Racing Mode
Luminance
What it is: The luminance at which the pre-calibration reading was done. This represents the luminance of the monitor when it is at the factory default settings.
:
280 cd/m²
Luminance Settings
What it is: The luminance settings, often named 'Brightness' on monitors, usually range from 0 to 100.
:
80
Contrast Setting
What it is: The monitor contrast setting, usually ranging from 0 to 100.
:
50
RGB controls
What it is: This is the value for each color (red, green, and blue) used in the monitor internal RGB cuts/gains controls. If the monitor does not have an internal RGB cuts/gains controls, then the color temperature setting will be used instead, and the color temperature that gives us the best result will be used.
:
100-100-100
Color Temperature
What it is: The color temperature is a measure of the color of light. A colder color temperature (7000K) will look bluer and a warmer color temperature (4000K) will look yellower/redder. 6500K is the standard color for PC monitors and also for the sRGB color standard.
When it matters: When you care about color reproduction and accuracy.
Good value: 6500K
Noticeable difference: 400K
:
7077 K
White Balance dE
What it is: Average inaccuracy of shades of gray.
When it matters: Overall color temperature of all video.
Good value: < 3
Noticeable difference: 1
:
5.09
Color dE
What it is: Average inaccuracy of colors.
When it matters: All colors.
Good value: < 3
Noticeable difference: 1
:
4.2
Gamma
What it is: Brightness of shades of gray.
When it matters: Shadows.
Good value: Between 2.1 and 2.3 (our target is 2.2)
Noticeable difference: 0.1
:
1.97

Disappointing out of the box color accuracy. The white balance is high enough that even non-enthusiasts might notice it, and color dE is almost as bad. Gamma is significantly under our target curve, so all scenes appear brighter than the sRGB reference. The color temperature is cold, giving everything a slightly more bluish tint.

9.4 Post Calibration
What it is: Monitor's color accuracy after a full calibration with a spectrophotometer.
When it matters: All graphics and video content on a monitor that has been professionally calibrated.
Score components:
ASUS ROG PG348Q Post Calibration Picture ASUS ROG PG348Q Post Gamma Curve Picture ASUS ROG PG348Q Post Color Picture
Picture Mode
What it is: The picture mode that was used to do the calibration reading. We usually go for the picture mode that gives us the more control over all the picture quality setting.
:
Racing Mode
Luminance
What it is: The luminance at which the calibration was executed. We aim for a luminance level of 100 cd/m².
:
99 cd/m²
Luminance Settings
What it is: The luminance settings, often named 'Brightness' on monitors, usually range from 0 to 100.
:
21
Contrast Setting
What it is: The monitor contrast setting, usually ranging from 0 to 100.
:
50
RGB controls
What it is: This is the value for each color (red, green, and blue) used in the monitor internal RGB cuts/gains controls. If the monitor does not have an internal RGB cuts/gains controls, then the color temperature setting will be used instead, and the color temperature that gives us the best result will be used.
:
100-100-94
Color Temperature
What it is: The color temperature is a measure of the color of light. A colder color temperature (7000K) will look bluer and a warmer color temperature (4000K) will look yellower/redder. 6500K is the standard color for PC monitors and also for the sRGB color standard.
When it matters: When you care about color reproduction and accuracy.
Good value: 6500K
Noticeable difference: 400K
:
6470 K
White Balance dE
What it is: Average inaccuracy of shades of gray.
When it matters: Overall color temperature of all videos.
Good value: < 3
Noticeable difference: 1
:
0.95
Color dE
What it is: Average inaccuracy of colors.
When it matters: All colors.
Good value: < 3
Noticeable difference: 1
:
0.62
Gamma
What it is: Brightness of shades of gray.
When it matters: Shadows.
Good value: Between 2.1 and 2.3 (our target is 2.2)
Noticeable difference: 0.1
:
2.18

Excellent color and grayscale accuracy after calibration. White balance and color accuracy are nearly perfectly corrected, to the point that nobody would be able to spot the imperfections. Gamma and color temperature almost hit our targets, but some brighter scenes are dimmer than they should be.

You can download our ICC profile calibration here. We don't recommend using this profile, as the calibration values vary per individual unit, even for the same model, due to manufacturing tolerances.

8.9 SDR Color Gamut
What it is: The palette of colors the monitor can display
When it matters: General content consumption or production
Score components:
ASUS ROG PG348Q Color Gamut s.RGB Picture
s.RGB xy
What it is: Coverage of the s.RGB colorspace on CIE 1931 xy.
When it matters: Almost all content. Includes websites, standard windows environment and SDR movies
Good value: > 95%
Noticeable difference: 5%
:
99.9 %
ASUS ROG PG348Q Color Gamut ARGB Picture
Adobe RGB xy
What it is: Coverage of the Adobe RGB colorspace on CIE 1931 xy.
When it matters: Professional photography.
Good value: > 90%
Noticeable difference: 5%
:
77.3 %

s.RGB Picture Mode: Racing Mode (calibrated)
Adobe RGB Picture Mode: Racing Mode

The Asus PG348 has an excellent SDR color gamut. Coverage of the standard s.RGB gamut is nearly perfect, great for daily usage. Professionals in print and media will be disappointed by the limited Adobe RGB coverage. For excellent Adobe RGB coverage, check out the Acer Predator X27.

9.0 SDR Color Volume
What it is: How much of the SDR color spaces the monitor can reproduce
When it matters: General usage and SDR media creation
Score components:
ASUS ROG PG348Q s.RGB Color Volume ITP picture
s.RGB in ICtCp
What it is: How much of the s.RGB colorspace a monitor can display at different luminosity levels
When it matters: Most content, including web, SDR video games, and SDR media creation
:
97.9 %
ASUS ROG PG348Q Adobe RGB Color Volume ITP Picture
Adobe RGB in ICtCp
What it is: How much of the Adobe RGB colorspace a monitor can display at different luminosity levels, normalized to the monitor's peak brightness.
When it matters: Professional media creation
:
82.5 %

s.RGB Picture Mode: Racing Mode
Adobe RGB Picture Mode: Racing Mode

Excellent color volume. Most of the gaps in the color volume are due to the limited contrast ratio, as the ASUS ROG SWIFT PG348Q can't produce deep, dark colors. It also can't produce very bright blues, but this is fairly common and shouldn't be noticeable.

0 HDR Color Gamut
What it is: The monitor's ability to reproduce HDR color spaces
When it matters: HDR content consumption or media creation
Score components:
Wide Color Gamut
What it is: Whether the monitor can support wider color gamuts
When it matters: HDR content and media creation
:
No
DCI P3 xy
What it is: Coverage of the DCI P3 colorspace on CIE 1931 xy
When it matters: When consuming or producing HDR content.
:
N/A
Rec. 2020 xy
What it is: Coverage of the Rec.2020 colorspace on CIE 1931 xy.
When it matters: When consuming or producing HDR content.
Good value: > 90%
Noticeable difference: 5%
:
N/A

HDR is not supported.

0 HDR Color Volume
What it is: How much of the HDR color spaces a monitor can display at different luminosity levels.
When it matters: HDR content consumption and production. Includes streaming services, UHD Blu-rays and HDR games.
Score components:
DCI-P3 in ICtCp
What it is: How much of the DCI-P3 colorspace a monitor can display at different luminosity levels, normalized to the monitor's peak brightness output.
When it matters: HDR content.
Good value: 80%
Noticeable difference: 5%
:
N/A
Rec. 2020 in ICtCp
What it is: How much of the Rec. 2020 colorspace a monitor can display at different luminosity levels, normalized to the monitor's peak brightness output.
When it matters: HDR content.
Good value: 80 %
Noticeable difference: 5 %
:
N/A

HDR is not supported.

10 Image Retention
What it is: How much a static image is retained on a monitor screen after a certain amount of time.
When it matters: When working or playing video games on your PC monitor.
ASUS ROG PG348Q Image Retention Picture
IR after 0 min recovery
What it is: Image retention measured right after the static image exposure, without recovery time.
When it matters: When changing use or right after changing the type of on screen content (i.e. stopping playing video game to watch a movie).
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0 %
IR after 2 min recovery
What it is: Image retention measured after a recovery time of 2 minutes.
When it matters: When changing use or right after changing the type of on screen content (i.e. stopping playing video game to watch a movie).
Good value: 0 is perfect
Noticeable difference: 0.015%
:
0 %
IR after 4 min recovery
What it is: Image retention measured after a recovery time of 4 minutes.
When it matters: When changing use or right after changing the type of on screen content (i.e. stopping playing video game to watch a movie).
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0 %
IR after 6 min recovery
What it is: Image retention measured after a recovery time of 6 minutes.
When it matters: When changing use or right after changing the type of on screen content (i.e. stopping playing video game to watch a movie).
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0 %
IR after 8 min recovery
What it is: Image retention measured after a recovery time of 8 minutes.
When it matters: When changing use or right after changing the type of on screen content (i.e. stopping playing video game to watch a movie).
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0 %
IR after 10 min recovery
What it is: Image retention measured after a recovery time of 10 minutes.
When it matters: When changing use or right after changing the type of on screen content (i.e. stopping playing video game to watch a movie).
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0 %

Perfect image retention. After displaying the high contrast test image for 10 minutes there was no image retention.

7.6 Gradient
What it is: How finely levels of color can be displayed.
When it matters: Details in shadows, sky and skin tones. Matters more for HDR content.
Score components: Subjectively assigned
ASUS ROG PG348Q Gradient Picture
Color Depth
What it is: Number of bits per pixel to represent a specific color. Note: we consider 8-bit with dithering to be equivalent to 10-bit, as long as the 10-bit gradient looks smooth.
When it matters: HDR content like HDR video games or HDR UHD movies. Won't matter for regular Blu-ray movies, SDR video game or desktop environment content displayed from a Windows PC. Those are limited to 8-bit color.
Good value: 10-bit.
Noticeable difference: 1 bit.
:
8 Bit

Good gradient handling. There is some visible banding in very dark shades, but this shouldn't be an issue for most uses.

The PG348Q is advertised by ASUS as a 10-bit monitor, but we were unable to get it to accept a 10-bit signal.

10 Color Bleed
What it is: How much the color from one area of the screen affects the color in another area of the screen.
When it matters: All usages, but especially media creation.
Score components:
ASUS ROG PG348Q Color bleed horizontal
Pixel row error
What it is: The amount of bleed that appears across the screen horizontally.
When it matters: General usage of a PC monitor, can appear when browsing the web or with media creation like graphics.
Good value: <0.2%
Noticeable difference: 0.1%
:
0.000 %
ASUS ROG PG348Q Color bleed vertical
Pixel column error
What it is: Amount of color bleeding that appears across the screen vertically.
When it matters: Most uses of a PC monitor. Can appear while browsing the web or when editing images or graphics.
Good value: <0.2%
Noticeable difference: 0.1%
:
0.000 %

Perfect color display, with no bleed between rows or columns.

7.5 Reflections
What it is: How much light is reflected by the TV.
When it matters: Bright rooms.
Score components: Subjectively assigned
ASUS ROG PG348Q Average room ASUS ROG PG348Q Average room off picture ASUS ROG PG348Q Bright room off picture

Good reflection handling, but not as good as the Dell U3417W. Most people won't have any issues, but there may be problems if you have a bright room with lots of windows.

8.3

Motion

Score components:

The ASUS PG348Q has great motion handling. It has a fast response time that produces very little motion blur, and the backlight is flicker-free. Unfortunately, there is no option to introduce flicker like NVIDIA's ULMB technology. It supports a native refresh rate of 60 Hz but is very easily overclocked to 100 Hz and there is little benefit to running it at 60 Hz. When connected via HDMI, the refresh rate is limited to 50 Hz.

9.2 Motion Blur
What it is: The performance of the pixel response time. Poor response time causes trails to follow moving objects. Response time is one of a few sources of motion blur.
When it matters: When there's fast movement on screen, such as during video games and sports.
Score components:
ASUS ROG PG348Q Motion Blur Picture ASUS ROG PG348Q Response Time Chart
80% Response Time
What it is: How quickly pixels can reach 80% of a full transition from one color to another.
When it matters: When there's fast movement on screen, such as during video games and sports.
Good value: < 8 ms
Noticeable difference: 4 ms
:
4.1 ms
100% Response Time
What it is: How quickly pixels can fully transition from one color to another.
When it matters: When there's fast movement on screen, such as during video games and sports.
Good value: < 20 ms
Noticeable difference: 10 ms
:
10.9 ms
Best Overdrive Setting
What it is: If the monitor has adjustable pixel overdrive settings, which one produces the best response time with minimal overshoot.
When it matters: When adjusting the monitor's settings to get the least possible motion blur.
:
Normal

OD Off
OD Normal
OD Extreme

The ASUS ROG SWIFT PG348Q has an excellent fast response time, which is great for gaming. The recommended OD setting is 'Normal'. This setting delivers the best balance between response time and overshoot. There is some overshoot, especially in the 0-20% transition. While this may be noticeable in really dark scenes, it shouldn't cause any issues for most people. With OD set to 'Extreme', there is severe overshoot in multiple transitions, and it doesn't improve the response time significantly.

The response time was measured with a 100Hz signal.

7.5 Image Flicker
What it is: Luminosity pattern when displaying images
When it matters: Nearly all the time during PC monitor use, but especially during fast movement such as video games
ASUS ROG PG348Q Backlight Picture
Flicker-free : Yes
PWM Dimming Frequency
What it is: Flickering pattern at different luminosities.
When it matters: For people sensitive to flickering.
Good value: N/A or high frequencies (> 300 Hz). Frequencies that are multiples of 60Hz are better.
:
0 Hz
Black Frame Insertion (BFI)
What it is: Option to turn screen black between frames
When it matters: Reduces eye tracking blur in motion
Good value: Yes
:
No
BFI Maximum Frequency
What it is: Highest possible frequency of flickering pattern
When it matters: Reduces eye-tracking blur in motion
Good value: Matches the native refresh rate
Noticeable difference: 20 Hz
:
N/A
BFI Minimum Frequency
What it is: Lowest possible frequency of flickering pattern
When it matters: Reduces eye-tracking blur in motion
Good value: 60 Hz
Noticeable difference: 20 Hz
:
N/A

The Asus PG348Q is completely flicker-free. It doesn't have an optional black frame insertion feature to reduce motion blur, since it does not support NVIDIA's ULMB technology.

8.1 Refresh Rate
What it is: How frequently the monitor can refresh and show new frames, and whether it can vary its refresh rate in real time using technologies like G-sync and FreeSync.
When it matters: Mostly for gaming, but does provide a little better motion during normal usage.
Native
What it is: The frequency at which the monitor is capable of displaying images every second
When it matters: General usage, but better results are most important for gaming
Good value: >100 Hz
Noticeable difference: 15 Hz
:
60 Hz
Factory Overclock
What it is: The frequency at which the monitor's can be boosted to using its internal menu.
When it matters: Gaming and other usages where high frame rate content is consumed.
Good value: >100
Noticeable difference: 15
:
100 Hz
Variable Refresh Rate
What it is: Feature that allows the monitor to synchronize its refresh rate with the input device's output and reduces stuttering and screen tearing.
When it matters: Almost every usage, but is most noticeable in gaming where constant fluctuation in framerate cause distracting artifacts.
:
G-Sync
VRR Maximum
What it is: The maximum frequency covered by the Variable Refresh Rate feature of the monitor.
When it matters: Any time the VRR feature is enabled.
Good value: Matches Refresh rate
Noticeable difference: 10 Hz
:
60 Hz
VRR Minimum
What it is: The lowest frequency covered by the monitor's Variable Refresh Rate feature.
When it matters: When using the VRR feature of the monitor at lower frame rates.
Good value: 30 Hz
:
< 20 Hz
VRR Maximum With OC
What it is: The maximum frequency covered by the Variable Refresh Rate feature when the monitor's overclocking feature is used.
When it matters: When both the overclocking and VRR features are used.
Good value: Matching the overclocked refresh rate.
Noticeable difference: 10 hz
:
100 Hz
VRR Supported Connectors : DisplayPort

The base refresh rate of 60Hz will be disappointing to some gamers. It can be overclocked to 100Hz within the OSD. There is also a Turbo Key button on the back of the monitor that can instantly switch between 60 and 100 Hz, but it is no longer supported on Windows 10 version 1803 and up. We were unable to get this feature to work on any of our computers.

The Asus PG348Q supports NVIDIA's G-Sync technology, when connected with a DisplayPort cable. When connected with an HDMI cable, the maximum refresh rate is 50 Hz when running at the monitor's native resolution of 3440x1440 due to HDMI bandwidth limitations.

9.0

Inputs

Score components:

The Asus PG348 has excellent low input lag. It has an excellent large, high-resolution screen that is great for multitasking, as well as delivering a more immersive gaming experience. Over DisplayPort, the monitor supports a 100 Hz refresh rate, and this mode delivers the lowest possible input lag.

9.1 Input Lag
What it is: Delay between input and onscreen reaction.
When it matters: General usage of the mouse and gaming.
Native Resolution
What it is: Lowest input lag possible at the center of the screen, when the monitor is displaying its native resolution at its native refresh rate.
When it matters: General usage and while playing video games.
Good value: < 15 ms
Noticeable difference: 5 ms
:
7.6 ms
Non-Native Resolution
What it is:

Lowest input lag possible at the center of the screen, when the monitor is displaying an alternative resolution at its native refresh rate. The non-native resolution tested depends on the native resolution of the monitor, following this pattern unless otherwise specified in the Input Lag text:

Native Resolution Non-Native Resolution Tested
4k UHD QHD
QHD FHD
FHD 1600x900
3440x1440 2560x1080
2560x1080 1920x1080
When it matters: General usage as well as gaming.
Good value: < 15 ms
Noticeable difference: 5 ms
:
N/A
Native Resolution @ 60 Hz
What it is: Lowest input lag possible at the center of the screen, when the monitor is displaying its native resolution at a refresh rate of 60 Hz.
When it matters: General usage as well as gaming.
Good value: < 15 ms
Noticeable difference: 5 ms
:
13.2 ms
Variable Refresh Rate
What it is: Lowest input lag possible at the center of the screen, when the monitor is using its Variable Refresh Rate feature at its native resolution.
When it matters: General usage as well as gaming.
Good value: < 15 ms
Noticeable difference: 5 ms
:
7.9 ms
HDR
What it is: Lowest input lag possible at the center of the screen, when the monitor is displaying an HDR signal at its native resolution and refresh rate.
When it matters: General usage as well as gaming.
Good value: < 15 ms
Noticeable difference: 5 ms
:
N/A
Black Frame Insertion (BFI)
What it is: Lowest input lag possible at the center of the screen, when BFI is enabled and the monitor is displaying a signal at the highest supported BFI refresh rate.
When it matters: General usage as well as gaming.
Good value: < 15 ms
Noticeable difference: 5 ms
:
N/A

Refresh Rate Tested: 100 Hz

Excellent low input lag when the PG348Q is overclocked to 100 Hz. Normally we test monitors at the native refresh rate, but in this case, there is a significant benefit to run the monitor at 100 Hz and no significant downsides. Note that 100 Hz is only possible over DisplayPort; HDMI is limited to 50 Hz and there will be more input lag.

Over DisplayPort the only possible resolutions are (3440x1440, 1024x768, 800x600, 640x480), and only 3440x1440 is capable of 100 Hz. This isn't usually a problem though because most graphics cards will upscale lower resolutions to 3440x1440 without you even knowing.

8.8 Resolution and Size
What it is: The number of pixels the monitor can display, and the surface area of its screen.
When it matters: All usages, but especially for office and media editing.
Score components:
Native Resolution : UWQHD, 3440 x 1440
Aspect Ratio : 21:9
Megapixels : 5.0 MP
Pixel Density : 109 PPI
Screen Diagonal : 34.1 inches
Screen Area : 415 sq inches

The large screen and 3440x1440 resolution are great for multitasking. Although it doesn't have a very high pixel density, it looks good and allows you to see more details.

Inputs
Total Inputs
DisplayPort : 1 (DP 1.2)
Mini DisplayPort : No
HDMI : 1 (HDMI 1.4)
DVI : No
VGA : No
DisplayPort Out : No
USB : 4 (USB 3.0)
USB C : No
Analog Audio Out 3.5mm : 1
Microphone In 3.5mm : No
Digital Optical Audio Out : No
Analog Audio Out RCA : No

Features

The Asus PG348Q has a few additional gaming features. Like many gaming monitors, there is an option for a customizable crosshair overlay, good for games that don't show crosshairs. There is also a USB hub on the back, so you can plug your keyboard and mouse in, but they aren't very accessible so they are less suited for plugging in a USB key or charging cable, and they don't support BC 1.2. The OSD is well organized and very easy to use, but quite small.

Additional Features
What it is: Additional features found on the monitor
Score components:
Speakers
What it is: Whether or not the monitor features standalone speakers.
When it matters: When using your computer without headphones or a dedicated pair of speakers.
:
Yes
HDR10 : No

There are quite a few additional gaming features, including:

To disable the OSD features, press the X button on the monitor to access the menu, then press it a second time.

There is also a dedicated Turbo Key on the back of the monitor that can instantly switch between the standard 60 Hz and the overclocked 100 Hz refresh rate. Unfortunately, this function does not work on Windows version 1803 (Windows 10 April 2018 Update) or later. We were unable to get this feature to work on any of our computers.

On-Screen Display (OSD)
Controls
ASUS ROG PG348Q Controls picture

Excellent control scheme. The OSD is navigated using a combination of a joystick and some dedicated buttons, and it works very well.

In The Box
ASUS ROG PG348Q In The Box picture

  • Republic of Gamers sticker
  • HDMI Cable
  • USB Cable
  • Manual
  • Power Cable (Not Shown)

Differences between Sizes and Variants

We tested the 34" ROG SWIFT PG348Q, which is the only model available. There are other sizes and variants in the ASUS ROG SWIFT lineup, some of which are listed below. The other models have different specifications and do not perform the same as the one we reviewed.

Model Size Native Resolution Refresh rate Notes
PG248Q 24" 1080p 180Hz G-Sync support
PG258Q 25" 1080p 240Hz G-Sync support
PG279Q 27" 1440p 144Hz G-Sync support
PG27AQ 27" 4k 60Hz G-Sync support
PG348Q 34" 3440x1440 60Hz G-Sync support, curved

Our PG348Q was manufactured in July 2016.

Compared to other Monitors

ASUS ROG PG348Q Group Shot Picture
Left: Samsung Dell U3417W. Middle: ASUS PB348Q. Right: Samsung CHG90
Unlike our other photographs, this picture wasn't taken under a controlled environment, so do not draw conclusions from it.

The ASUS ROG SWIFT PG348Q is a great gaming monitor with a good design, but it comes with a premium price.

ASUS ROG PG279Q

The ASUS ROG PG279Q is better than the ASUS ROG Swift PG348Q. The PG279Q has better motion handling, with an even faster response time that produces almost no noticeable motion blur. The backlight on the PG279Q also has the option to introduce flicker to reduce persistence blur. While both monitors support NVIDIA's G-Sync technology, the PG279Q has a higher native refresh rate of 144Hz that can easily be overclocked to 165 Hz.

Samsung CHG90

The ASUS PG348Q and the Samsung CHG90 are similar overall monitors, each with their own advantages. The PG348Q has a better stand with better ergonomics, and it has much wider viewing angles. The CHG90 has flicker in the backlight, and it has an optional mode to reduce the flicker frequency to reduce persistence blur. The CHG90 also has a higher refresh rate. The PG348Q supports G-Sync, whereas the CHG90 supports FreeSync. This may be an important factor to take into consideration depending on what your graphics card supports.

Dell U3417W

The ASUS ROG Swift PG348Q is better than the Dell U3417W. The PG348Q has much better motion handling, with a faster response time and higher refresh rate, as well as NVIDIA G-Sync VRR support. The ASUS also has much lower input lag, making it a much better gaming monitor overall. The Asus also has a better stand that can also swivel, great for sharing work with someone else.

Dell Alienware AW3418DW

The Dell Alienware AW3418DW is marginally better than the ASUS ROG PG348Q. The Alienware has a little faster refresh rate and produces a little less blur in fast-moving content. Also, the Alienware has lower input lag and responds slightly quicker to your actions giving you a small edge in gaming. Other than those minor differences the two monitors are very similar.

LG 34UC79G-B

The ASUS ROG Swift PG348Q is marginally better than the LG 34UC79G-B. The PG348Q is brighter and has a wider color gamut and better color volume. The 34UC79G-B has better motion handling, with an optional black frame insertion feature to clear up blur, and a higher native refresh rate. The PG348Q has a better stand that can swivel as well as tilt, making it easier to show something to a nearby colleague.

LG 32UD99

The LG 32UD99 is better than the ASUS ROG SWIFT PG348Q for most uses. The LG is brighter, has better gradient handling, and supports HDR. The 32UD99 also has better dark room performance, with much better black uniformity. The PG348Q and 32UD99 have similar overall gaming performance, but the ASUS can be overclocked to a 100 Hz refresh rate when connected with DisplayPort, and it supports NVIDIA G-SYNC instead of FreeSync.

+ Show more

Conclusion
SEE PRICE
Amazon.com

7.6Mixed Usage
Score components:
  • 30% Office
  • 30% Multimedia
  • 25% Gaming
  • 10% Media Creation
  • 5% HDR Gaming
The Asus PG348Q is a good monitor for most uses. The widescreen aspect ratio and high resolution are perfect for multitasking. It has a fast response time and low input lag, great for gaming or multimedia. Unfortunately, it has poor dark room performance due to the mediocre contrast ratio and bad black uniformity.
Very good monitor for office use. It has wide viewing angles, perfect if you like to share your screen. The wide, high resolution screen is perfect for multitasking. The stand is well built and easily adjustable, but it can't rotate to a portrait orientation. It has decent reflection handling but might have a tough time with direct light in an office with lots of windows.
The Asus ROG 348Q is a great monitor for gaming. It has a fast response time and low input lag, as well as NVIDIA G-Sync support for tear-free gaming. It has a standard 60 Hz refresh rate, but that can easily be increased to 100 Hz. The high resolution, 21:9 aspect ratio provides a more immersive gaming experience.
This is a decent monitor for multimedia. The Asus PG348 has a fast response time that produces smooth motion with little blur. It has good brightness and an excellent color gamut. Unfortunately, it isn't good for watching movies at night in a dark room, as there is noticeable flashlighting and the contrast ratio is mediocre.
Decent monitor for media creation. The high resolution, wide format screen makes it easier to see more of your project. The color gamut is great if you are working in a non-professional setting, but if you work with Adobe RGB the coverage is limiting.
HDR is not supported. For a decent HDR gaming monitor check out the Samsung CHG70.

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