ASUS ROG Swift PG348Q Monitor Review

Tested using Methodology v1.0
Updated Sep 14, 2018 at 08:04 am
ASUS ROG Swift PG348Q Picture
Mixed Usage
Media Creation
HDR Gaming
Size 34"
Resolution 3440x1440
Refresh Rate 60 Hz
LCD Type
Variable Refresh Rate

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.

Our Verdict

7.6 Mixed Usage

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.

  • Image remains accurate when viewed at an angle
  • Good gaming features like G-SYNC
  • Large, high resolution screen
  • Bad black uniformity
  • Disappointing accuracy out of the box
7.9 Office

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.

8.1 Gaming

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.

7.3 Multimedia

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.

7.4 Media Creation

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.

5.5 HDR Gaming

HDR is not supported. For a decent HDR gaming monitor check out the Samsung CHG70.

  • 7.6 Mixed Usage
  • 7.9 Office
  • 8.1 Gaming
  • 7.3 Multimedia
  • 7.4 Media Creation
  • 5.5 HDR Gaming
  1. Updated Jan 07, 2019: The gradient score has been updated, as it was scored incorrectly at the time of the review.
  2. Updated Nov 06, 2018: There was an error with the curve radius scoring which has been fixed. This has not changed the usage scores for this monitor.

Test Results

Curved Yes
Curve radius 3800R
Weight (without stand)
17.2 lbs (7.8 kg)
Weight (with stand)
24.9 lbs (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.

21.0" (53.3 cm)
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.

Height Adjustment
4.4" (11.2 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.

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.

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 (with stand)
10.8" (27.4 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.

Build Quality

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

Picture Quality
Picture Quality
Native Contrast
1195 : 1
Contrast with local dimming

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.

Picture Quality
Local Dimming
Local Dimming

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

Picture Quality
SDR Peak Brightness
SDR Real Scene
294 cd/m²
SDR Peak 2% Window
325 cd/m²
SDR Peak 10% Window
326 cd/m²
SDR Peak 25% Window
326 cd/m²
SDR Peak 50% Window
326 cd/m²
SDR Peak 100% Window
326 cd/m²
SDR Sustained 2% Window
325 cd/m²
SDR Sustained 10% Window
326 cd/m²
SDR Sustained 25% Window
326 cd/m²
SDR Sustained 50% Window
326 cd/m²
SDR Sustained 100% Window
326 cd/m²

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.

Picture Quality
HDR Peak Brightness
HDR Real Scene
HDR Peak 2% Window
HDR Peak 10% Window
HDR Peak 25% Window
HDR Peak 50% Window
HDR Peak 100% Window
HDR Sustained 2% Window
HDR Sustained 10% Window
HDR Sustained 25% Window
HDR Sustained 50% Window
HDR Sustained 100% Window

HDR is not supported.

Picture Quality
Horizontal Viewing Angle
Color Shift from Left
47 °
Color Shift from Right
47 °
Brightness from Left
53 °
Brightness from Right
53 °
Black Level from Left
75 °
Black Level from Right
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.

Picture Quality
Vertical Viewing Angle
Color Shift from Below
25 °
Color Shift from Above
26 °
Brightness from Below
31 °
Brightness from Above
31 °
Black Level from Below
75 °
Black Level from Above
75 °

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

Picture Quality
Gray Uniformity
50% Std. Dev.
3.468 %
50% DSE
0.116 %
5% Std. Dev.
0.326 %
5% DSE
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.

Picture Quality
Black Uniformity
Native Std. Dev.
4.041 %
Std. Dev. w/ L.D.

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

Picture Quality
Pre Calibration
Picture Mode
Racing Mode
280 cd/m²
Luminance Settings
Contrast Setting
RGB controls
Color Temperature
7077 K
White Balance dE
Color dE

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.

Picture Quality
Post Calibration
Picture Mode
Racing Mode
99 cd/m²
Luminance Settings
Contrast Setting
RGB Controls
Color Temperature
6470 K
White Balance dE
Color dE

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.

Picture Quality
SDR Color Gamut
sRGB xy
99.9 %
Adobe RGB xy
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.

Picture Quality
SDR Color Volume
sRGB in ICtCp
97.9 %
Adobe RGB in ICtCp
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.

Picture Quality
HDR Color Gamut
Wide Color Gamut
DCI P3 xy
Rec. 2020 xy

HDR is not supported.

Picture Quality
HDR Color Volume
DCI-P3 in ICtCp
Rec. 2020 in ICtCp

HDR is not supported.

Picture Quality
Image Retention
IR after 0 min recovery
0.00 %
IR after 2 min recovery
0.00 %
IR after 4 min recovery
0.00 %
IR after 6 min recovery
0.00 %
IR after 8 min recovery
0.00 %
IR after 10 min recovery
0.00 %

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

Picture Quality
Color Depth
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.

Update 01/07/2019: The gradient score has been updated (7.6 -> 8.6), as it was scored incorrectly at the time of the review.

Picture Quality
Color Bleed
Pixel row error
0.000 %
Pixel column error
0.000 %

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

Picture Quality

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.

Motion Blur
80% Response Time
4.1 ms
100% Response Time
10.9 ms
Best Overdrive Setting

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.

Image Flicker
Flicker-free Yes
PWM Dimming Frequency
0 Hz
Black Frame Insertion (BFI)
BFI Maximum Frequency
BFI Minimum Frequency

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.

Refresh Rate
60 Hz
Factory Overclock
100 Hz
Variable Refresh Rate
G-SYNC Compatible
Yes (Native)
VRR Maximum
60 Hz
VRR Minimum
< 20 Hz
VRR Maximum With OC
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 (see our recommendations for the best G-SYNC monitors). 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.

Input Lag
Native Resolution
7.6 ms
Non-Native Res @ Native Refresh
Native Resolution @ 60 Hz
13.2 ms
Variable Refresh Rate
7.9 ms
10 bit HDR
Black Frame Insertion (BFI)

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.

Resolution and Size
Native Resolution 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.

Total Inputs
DisplayPort 1 (DP 1.2)
Mini DisplayPort No
HDMI 1 (HDMI 1.4)
DisplayPort Out No
USB 4 (USB 3.0)
Analog Audio Out 3.5mm 1
Microphone In 3.5mm No
Digital Optical Audio Out No
Analog Audio Out RCA No
Power Supply Internal
Additional Features
HDR10 No
Multiple input display

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)

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

  • 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

Comparison 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. See our recommendations for the best curved gaming monitors, the best monitors for PS4 and the best monitors for photo editing and graphic design.

Dell Alienware AW3418DW/1900R

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.

Samsung C49HG90/CHG90

The ASUS ROG PG348Q and the Samsung CHG90 are similar overall monitors, each with their 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 S3220DGF

The ASUS ROG Swift PG348Q and the Dell S3220DGF have different panel types, each with advantages and disadvantages. The Asus has an IPS panel and maintains an accurate image for wider viewing angles, which is great if you do collaborative work. The Dell, on the other hand, has a VA panel that delivers deeper and more uniform blacks, which is great if you often game in a dark room. The Dell has a much faster refresh rate and supports HDR, whereas the ASUS is larger with a higher resolution that displays more of your work, minimizing scrolling.


The ASUS ROG Swift PG348Q and the ASUS TUF VG32VQ use different panel technologies, each with strengths and weaknesses. The PG348Q has much better viewing angles, and the wide aspect ratio is slightly better for multitasking. The VG32VQ supports HDR, and it looks much better in a dark room. The VG32VQ has more advanced gaming features, including a faster refresh rate and an optional black frame insertion feature.

LG 34GK950F-B

The LG 34GK950F-B is better than the ASUS ROG Swift PG348Q for most uses, but some people might prefer the ASUS for gaming. The LG supports HDR, has an optional black frame insertion feature, and has a higher refresh rate. The biggest difference for gamers is that the LG supports AMD's FreeSync variable refresh rate technology, whereas the ASUS supports NVIDIA's G-SYNC technology.

Samsung C34J791/CJ791

The ASUS ROG PG348Q is better than the Samsung CJ791 if you care about good viewing angles. The ASUS ROG PG348Q has an IPS panel whereas the Samsung has a VA one. The ASUS also has a faster response time with a smaller blur trail and better ergonomics to position it comfortably. The Samsung CJ791, on the other hand, has a lower input lag which makes it very responsive to your actions.


The ASUS ROG PG279Q is better than the ASUS ROG 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 165Hz.

Acer Predator Z35P Bmiphz

The ASUS ROG Swift PG348Q and the Acer Z35P Bmiphz are very similar overall. The Z35P has a higher native refresh rate, but the PG348Q can be easily overclocked to 100Hz. The PG348Q also has better wide viewing angles, great for sharing your screen with other people.

LG 34WK95U-W

The LG 34WK95U is slightly better overall than the ASUS ROG PG348Q. The LG 34WK95U has a higher resolution, supports HDR, and has slightly better gradient banding, whereas the ASUS is more of a gaming monitor that supports G-SYNC, is flicker-free, has less image blur, and supports FreeSync.

Dell U3417W

The ASUS ROG PG348Q is a bit 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.

LG 34UC79G-B

The ASUS ROG PG348Q is marginally better than the LG 34UC79G-B. The ASUS ROG 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.

Dell U3818DW

The Dell U3818DW is slightly better than the ASUS ROG PG348Q, but overall it depends on your usage. The ROG PG348Q is better for gaming, thanks to the faster refresh rate and G-SYNC support. The Dell U3818DW is better for office use thanks to the larger, higher-resolution screen, as well as the multitasking-oriented features, like PIP/PBP. The Dell U3818DW has slightly better dark room performance, as there is less backlight bleed and flashlighting.

LG 32UD99-W

The LG 32UD99 is better than the ASUS ROG 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 100Hz refresh rate when connected with DisplayPort, and it supports NVIDIA G-SYNC instead of FreeSync.

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