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ASUS ROG Swift OLED PG34WCDM Monitor Review

Tested using Methodology v1.2
Reviewed Mar 21, 2024 at 11:46 am
ASUS ROG Swift OLED PG34WCDM Picture
8.8
Mixed Usage
8.1
Office
9.0
Gaming
9.2
Media Consumption
8.8
Media Creation
9.0
HDR

The ASUS ROG Swift OLED PG34WCDM is a 34-inch 1440p premium ultrawide OLED gaming monitor with an 800R curve. It has a class-leading 240Hz refresh rate, has VRR support for FreeSync Premium Pro, and is certified as NVIDIA G-SYNC compatible. It also has RGB lighting on the back of the monitor and its stand. It has several additional gaming features, including crosshair and shadow boost. In addition to its gaming capabilities, it has several productivity features, like a KVM switch with drag-and-drop file movement capability, 90W power delivery over USB-C, Clear Pixel Edge, which purports to decrease fringing on text and the edges of windows, and an adjustable blue light filter to reduce the amount of blue light from the monitor.

Our Verdict

8.8 Mixed Usage

The ASUS PG34WCDM is excellent for most uses. It's designed as a gaming monitor and is incredible for this. It has a high 240Hz refresh rate for a smooth feel, support for all VRR formats to reduce screen tearing, and an extremely fast response time, so objects look sharp. It's also superb for media consumption and HDR content, as it displays a wide range of colors, and deep blacks are visible next to bright highlights that pop, creating an immersive experience. However, it has a strong 800R curve and okay ergonomics, so it's harder to share your screen with someone else while you're working. Additionally, its text clarity isn't as good as many other ultrawide monitors that don't have an OLED display.

Pros
  • Large 34-inch ultrawide screen.
  • Fantastic reflection handling.
  • Perfect black levels.
Cons
  • Reduced text clarity due to subpixel layout.
  • Risk of permanent burn-in with static elements.
8.1 Office

The ASUS PG34WCDM is very good for office use in certain circumstances. Its large, ultrawide 34-inch screen allows you to open multiple windows side by side and display a large amount of information at the same time. It also has decent brightness and fantastic reflection handling, so it's visible in most lighting conditions, though it doesn't get bright enough to fight intense glare. However, it has only adequate text clarity, and text is less sharp than many other ultrawide 1440p displays. Additionally, its strong 800R curve and fair ergonomics make it more difficult to share your screen with someone sitting next to you. Finally, OLEDs like this one are prone to burn-in with constant exposure to the same static elements over time.

Pros
  • Large 34-inch ultrawide screen.
  • Fantastic reflection handling.
  • Wide viewing angles.
  • KVM switch and USB-C port.
Cons
  • Reduced text clarity due to subpixel layout.
  • Risk of permanent burn-in with static elements.
9.0 Gaming

The ASUS PG34WCDM is incredible for gaming. Its high 240Hz refresh rate provides a smooth feel, and it supports all VRR formats to reduce screen tearing. It has an exceptionally fast response time, so there's almost no blur behind fast-moving objects, and it has low input lag, so fast-paced games feel responsive. It also has near-infinite contrast and deep blacks are visible next to bright highlights, creating an immersive experience. However, while it has HDMI 2.1 bandwidth, it doesn't support VRR with consoles unless you stretch the image to fill the entire screen width.

Pros
  • Perfect black levels.
  • Low input lag.
  • Near-instantaneous response time.
  • Supports all VRR formats.
Cons
  • Strong 800R curve makes local co-op gaming more challenging.
9.2 Media Consumption

The ASUS PG34WCDM is superb for media consumption in certain circumstances. Colors look vivid and rich, and deep blacks appear next to bright highlights for an immersive experience. However, while it has outstanding viewing angles, it's not a good choice for sharing your screen because of its strong 800R curve, making it harder for others to see from the sides.

Pros
  • Large 34-inch ultrawide screen.
  • Wide viewing angles.
  • Perfect black levels.
  • No blooming around bright objects.
Cons
  • HDR colors not as vivid as some QD-OLED ultrawide monitors.
  • Difficult to share the screen with someone sitting nearby.
8.8 Media Creation

The ASUS PG34WCDM is excellent for content creation. Its 34-inch display is large enough to open multiple windows at the same time. Additionally, it has great SDR color accuracy before calibration and is fantastic at displaying the HDR color gamut, making it a great choice for editing videos or images in HDR. However, its okay ergonomics and strong 800R curve make it difficult to share your screen with others next to you. Additionally, its unusual subpixel layout makes the text less clear than other 34-inch 1440p monitors. Finally, OLEDs like this one are prone to burn-in with constant exposure to the same static elements over time.

Pros
  • Large 34-inch ultrawide screen.
  • Fantastic reflection handling.
  • Wide viewing angles.
  • Great color accuracy before calibration.
  • No blooming around bright objects.
  • KVM switch and USB-C port.
Cons
  • Reduced text clarity due to subpixel layout.
  • Risk of permanent burn-in with static elements.
9.0 HDR

The ASUS PG34WCDM is fantastic for HDR. It has a near-infinite contrast ratio, and deep blacks are visible next to bright highlights, creating an immersive experience. Additionally, small highlights get bright enough to pop, though larger highlights don't pop nearly as much. It displays a wide range of colors in HDR, though colors aren't as vibrant as some other ultrawide OLED displays.

Pros
  • Perfect black levels.
  • No blooming around bright objects.
Cons
  • HDR colors not as vivid as some QD-OLED ultrawide monitors.
  • 8.8 Mixed Usage
  • 8.1 Office
  • 9.0 Gaming
  • 9.2 Media Consumption
  • 8.8 Media Creation
  • 9.0 HDR
  1. Updated Mar 21, 2024: Review published.
  2. Updated Mar 14, 2024: Early access published.
  3. Updated Mar 11, 2024: Our testers have started testing this product.
  4. Updated Feb 26, 2024: The product has arrived in our lab, and our testers will start evaluating it soon.
  5. Updated Feb 01, 2024: We've purchased the product and are waiting for it to arrive in our lab.

Differences Between Sizes And Variants

We tested the 34-inch ASUS ROG Swift OLED PG34WCDM, which is the only size available for this monitor. The results are only valid for this model.

Model Size Resolution Panel Type Refresh Rate Firmware Version Tested
PG34WCDM 34" 1440p OLED 240Hz MCM101

 Our unit was manufactured in December 2023; you can see the label here.

Compared To Other Monitors

The ASUS PG34WCDM is a fantastic 34-inch ultrawide gaming monitor. It has a higher refresh rate than most other 34-inch ultrawide monitors OLED monitors, as well as a much stronger curve to the display. Unlike QD-OLEDs, deep blacks won't appear purple in a brighter environment. It's an outstanding choice for someone who wants an extremely smooth and responsive feel while gaming on a 34-inch ultrawide monitor.

However, it's also very expensive, and models with very similar gaming performance are available in this size for considerably less, like the Dell Alienware AW3423DWF. Additionally, the Dell has considerably more vivid HDR colors. However, it has a lower refresh rate than the ASUS and no black frame insertion (BFI) feature.

See our recommendations for the best ultrawide monitors, the best ultrawide gaming monitors, and the best gaming monitors.

Dell Alienware AW3225QF

The ASUS ROG Swift OLED PG34WCDM and the Dell Alienware AW3225QF are large, premium OLED gaming monitors. Both have a 240Hz refresh rate and fantastic gaming, media consumption, and HDR capabilities. However, the Dell is the better choice for content consumption, as most videos fill its entire screen. It also has considerably better text clarity, making it better suited to occasional productivity use. However, some may find the ASUS's ultrawide screen more immersive, and it's a better choice if maintaining a high framerate is important to you, as its lower resolution makes it easier to drive higher frame rates. You may also prefer the ASUS if you're gaming in a brighter environment, as deep blacks won't appear purple in a bright room as they do on the Dell.

Dell Alienware AW3423DWF

The ASUS ROG Swift OLED PG34WCDM and the Dell Alienware AW3423DWF are both 34-inch ultrawide OLED premium gaming monitors. Both offer outstanding gaming performance, as well as incredible media consumption and HDR capabilities. If a smooth gaming experience is important to you, then the ASUS is a better choice, as it has a higher refresh rate and is better at reducing persistence blur in fast-moving games because it has a BFI feature. However, if color richness is important to you, the Dell is the better choice, as it has far more vivid HDR colors. You may also prefer the ASUS if you're gaming in a brighter environment, as deep blacks won't appear purple as they do on the Dell.

Samsung Odyssey OLED G8/G85SB S34BG85

Both the ASUS ROG Swift OLED PG34WCDM and the Samsung Odyssey OLED G8/G85SB S34BG85 are 34-inch ultrawide OLED gaming monitors. Both monitors are superb for gaming and have incredible media consumption and HDR performance. If you're looking for a smooth gaming experience, then the ASUS's high refresh rate makes it a better choice. It's also better if you want to reduce persistence blur in games, as it has a BFI feature. However, the Samsung is a better choice if rich colors are important to you, as it has more vivid HDR colors.

ASUS ROG Swift OLED PG27AQDM

The ASUS ROG Swift OLED PG34WCDM and the ASUS ROG Swift OLED PG27AQDM are OLED gaming displays with a 240Hz refresh rate. However, the PG34WCDM is significantly wider than the PG27AQDM, so if immersion is important, you may find its wider screen creates a more immersive gaming experience. Both are fantastic for gaming, media consumption, and watching HDR content. The PG27AQDM works better for console gaming and is the better choice if more vivid HDR colors are important to you. However, the PG34WCDM's brighter display is a better choice if you're gaming in a room with more ambient light.

Test Results

perceptual testing image
Design
Design
Style
Curved
Yes
Curve Radius
800R

The ASUS ROG Swift OLED PG34WCDM has a gamer-oriented design with thin bezels and a tripod stand. The back of the monitor has RGB lighting, which you can see here. While it has RGB lighting on the stand, ours didn't work.

8.5
Design
Build Quality

The build quality is excellent, with just a small amount of creaking in the monitor's plastic housing. The triangular stand pieces are metal, while the pillar is plastic, and the stand has minimal flex or plastic creaking. However, in our model, the pins that connect the monitor to the stand for RGB stand lighting don't contact properly, so our base lighting doesn't work. You can see a picture of the pins here.

6.8
Design
Ergonomics
Height Adjustment
4.3" (11.0 cm)
Tilt Range
-20° to 5°
Rotate Portrait/Landscape
No
Swivel Range
-15° to 15°
Wall Mount
VESA 100x100

The ergonomics are adequate. It has excellent height adjustment, so you can easily place it at your preferred height, and it also has a great tilt range. However, its swivel range is limited, though the monitor’s strong 800R curve is designed to be viewed from the center anyway. It comes with a mounting bracket if you want to mount the monitor. The stand offers cable management.

Design
Stand
Base Width
24.3" (61.6 cm)
Base Depth
11.5" (29.2 cm)
Thickness (With Display)
8.1" (20.5 cm)
Weight (With Display)
18.4 lbs (8.3 kg)

The tripod stand works well, and there's room to put peripherals between the stand legs. The monitor has minimal wobble when bumped at the corners and recovers quickly.

Design
Display
Size
34"
Housing Width
31.2" (79.2 cm)
Housing Height
15.0" (38.0 cm)
Thickness (Without Stand)
2.6" (6.5 cm)
Weight (Without Stand)
12.5 lbs (5.7 kg)
Borders Size (Bezels)
0.4" (1.0 cm)
Design
Controls

A joystick controls the on-screen display; it's located on the back of a lip at the bottom of the monitor. The right button is the monitor's power control, while the left button switches between inputs.

Design
In The Box
Power Supply
External Brick

  • DisplayPort cable
  • HDMI cable
  • USB-C cable
  • Power supply and cable
  • USB-B to USB-A cable
  • Mounting bracket (100x100)
  • Down-facing light accessories
  • Accessories bag
  • ROG sticker set (see here)
  • User documentation, including calibration report

Picture Quality
10
Picture Quality
Contrast
Native Contrast
Inf : 1
Contrast With Local Dimming
N/A

The ASUS PG34WCDM has an outstanding, near-infinite contrast ratio. Its OLED panel displays deep, inky blacks next to bright highlights.

10
Picture Quality
Local Dimming
Local Dimming
No
Backlight
No Backlight

OLED panels like this one don't have a backlight, so they don't require a local dimming feature. However, with a near-infinite contrast ratio, there isn't any blooming around bright objects, and it's the equivalent of a perfect local dimming feature. We still film these videos on the monitor so you can see how the screen performs and compare it with a monitor that has local dimming.

7.4
Picture Quality
SDR Brightness
Real Scene
273 cd/m²
Peak 2% Window
380 cd/m²
Peak 10% Window
381 cd/m²
Peak 25% Window
388 cd/m²
Peak 50% Window
289 cd/m²
Peak 100% Window
239 cd/m²
Sustained 2% Window
376 cd/m²
Sustained 10% Window
377 cd/m²
Sustained 25% Window
384 cd/m²
Sustained 50% Window
287 cd/m²
Sustained 100% Window
238 cd/m²
Automatic Brightness Limiting (ABL)
0.033
Minimum Brightness
20 cd/m²

The SDR brightness is satisfactory. While it gets bright enough to overcome glare in most lighting conditions, it has trouble fighting glare in a very bright room. These results are from after calibration in 'Racing Mode' GameVisual, which is the name for the picture mode, with the Brightness at its max, Uniform Brightness disabled, and Auto Logo Brightness turned off.

If you want the monitor's brightness to remain the same no matter what content is on the screen, you can use Uniform Brightness. Turning Uniform Brightness 'On' works as expected, locking maximum brightness between 236 cd/m² and 240 cd/m² for the 2% to 100% windows, both sustained and peak. Real scene brightness is 225 cd/m² with Uniform Brightness 'On.'

7.0
Picture Quality
HDR Brightness
VESA DisplayHDR Certification
DisplayHDR TRUE BLACK 400
Real Scene
443 cd/m²
Peak 2% Window
1,108 cd/m²
Peak 10% Window
716 cd/m²
Peak 25% Window
407 cd/m²
Peak 50% Window
298 cd/m²
Peak 100% Window
246 cd/m²
Sustained 2% Window
1,080 cd/m²
Sustained 10% Window
707 cd/m²
Sustained 25% Window
403 cd/m²
Sustained 50% Window
298 cd/m²
Sustained 100% Window
246 cd/m²
Automatic Brightness Limiting (ABL)
0.088

The monitor has decent HDR brightness. Small highlights get bright enough to truly pop, but larger ones don't pop as much. Additionally, dark scenes are too dark, causing a loss of shadow detail, but it has an excellent sharp cut-off at peak brightness, ensuring it doesn't tone map before your computer does.

These results are in 'Gaming HDR' HDR Setting with Brightness Adjustable 'On,' Uniform Brightness 'Off,' Auto Logo Brightness 'Off,' and Brightness locked to its max. Adjusting the brightness to maximum improves the EOTF curve, and you achieve a slightly higher peak brightness. You can see what the EOTF looks like with brightness at its default setting here.

If the monitor is receiving a 16:9 signal, and you don't stretch it to fill the screen, the real scene brightness is 554 cd/m², which is substantially higher than the 21:9 real scene brightness.

10
Picture Quality
Horizontal Viewing Angle
Color Washout From Left
70°
Color Washout From Right
70°
Color Shift From Left
70°
Color Shift From Right
66°
Brightness Loss From Left
70°
Brightness Loss From Right
70°
Black Level Raise From Left
70°
Black Level Raise From Right
70°
Gamma Shift From Left
70°
Gamma Shift From Right
70°

The ASUS PG34WCDM has an outstanding horizontal viewing angle. Although it technically isn't perfect, you won't see any inconsistencies when viewing from the sides or if you sit close to the screen.

9.8
Picture Quality
Vertical Viewing Angle
Color Washout From Below
70°
Color Washout From Above
70°
Color Shift From Below
70°
Color Shift From Above
68°
Brightness Loss From Below
70°
Brightness Loss From Above
70°
Black Level Raise From Below
60°
Black Level Raise From Above
59°
Gamma Shift From Below
70°
Gamma Shift From Above
70°

The vertical viewing angle is remarkable. The image looks the same even if you're standing up and looking down on it or have it mounted above eye level.

8.3
Picture Quality
Gray Uniformity
50% Std. Dev.
2.669%
50% DSE
0.132%

The gray uniformity is great. However, while there's minimal dirty screen effect, the screen is darker in the right corners. Additionally, during testing, we noticed that the monitor retained faint images of HUD elements from three repeated playbacks of our warmup video. We fixed this after running pixel cleaning. You can see what we observed here.

10
Picture Quality
Black Uniformity
Native Std. Dev.
0.165%
Std. Dev. w/ L.D.
N/A

The ASUS PG27AQDM has perfect black uniformity as its OLED panel can turn individual pixels on and off, so there isn't any blooming.

8.5
Picture Quality
Color Accuracy (Pre-Calibration)
Picture Mode
sRGB Cal Mode
sRGB Gamut Area xy
104.8%
White Balance dE (Avg.)
2.41
Color Temperature (Avg.)
6,275 K
Gamma (Avg.)
2.29
Color dE (Avg.)
1.92
Contrast Setting
80
RGB Settings
Default
Gamma Setting
Default
Brightness Setting
26
Measured Brightness
131 cd/m²
Brightness Locked
No

The ASUS PG34WCDM has excellent accuracy before calibration in the sRGB mode. Though colors are slightly oversaturated, it has good overall color accuracy and white balance. Additionally, scenes are consistently too dark before calibration.

Unfortunately, using the sRGB mode locks many settings, including Uniform Brightness and Contrast. If you do want to use those locked-out settings, you can use the 'Racing Mode,' which, before calibration, makes the gamma curve more accurate for all but the darkest scenes, though it oversaturates colors. You can see this here.

9.1
Picture Quality
Color Accuracy (Post-Calibration)
Picture Mode
Racing Mode
sRGB Gamut Area xy
103.3%
White Balance dE (Avg.)
0.66
Color Temperature (Avg.)
6,512 K
Gamma (Avg.)
2.20
Color dE (Avg.)
1.87
Contrast Setting
80
RGB Settings
98-99-100
Gamma Setting
2.2
Brightness Setting
18
Measured Brightness
99 cd/m²
ICC Profile
Download

The accuracy after calibration is fantastic. The color temperature is almost perfect, and it now follows the gamma curve very closely. Color gamut and accuracy are also slightly improved. Additionally, by calibrating it you can adjust settings that are locked out in the sRGB mode, like Uniform Brightness.

9.6
Picture Quality
SDR Color Gamut
sRGB Coverage xy
100.0%
sRGB Picture Mode
Racing Mode
Adobe RGB Coverage xy
89.6%
Adobe RGB Picture Mode
Racing Mode

The SDR color gamut is incredible. It has perfect coverage of the sRGB color space used in most web content. It also has very good coverage of the Adobe RGB color space, though it doesn't display greens or reds accurately, which is disappointing if you need to work with those colors in Adobe RGB.

9.9
Picture Quality
SDR Color Volume
sRGB In ICtCp
99.8%
sRGB Picture Mode
Racing Mode
Adobe RGB In ICtCp
93.0%
Adobe RGB Picture Mode
Racing Mode

The ASUS ROG Swift PG34WCDM has fantastic SDR color volume, displaying dark and bright colors with almost no issues.

9.0
Picture Quality
HDR Color Gamut
Wide Color Gamut
Yes
DCI-P3 Coverage xy
96.6%
DCI-P3 Picture Mode
Asus Gaming HDR
Rec. 2020 Coverage xy
70.1%
Rec. 2020 Picture Mode
Asus Gaming HDR

The HDR color gamut is superb. It displays almost the entire range of colors in DCI-P3, and colors are very accurate, though white isn't displayed properly. However, in Rec. 2020 it has significantly less coverage, and colors are less accurate.

7.4
Picture Quality
HDR Color Volume
DCI-P3 In ICtCp
75.5%
DCI-P3 Picture Mode
Asus Gaming HDR
Rec. 2020 In ICtCp
54.8%
Rec. 2020 Picture Mode
Asus Gaming HDR

The HDR color volume is decent. While it's excellent at displaying darker colors well, bright colors are less vivid.

9.2
Picture Quality
Reflections
Screen Finish
Matte
Total Reflections
1.7%
Indirect Reflections
0.9%
Calculated Direct Reflections
0.7%

The ASUS ROG Swift PG34WCDM's reflection handling is remarkable, and it's extremely effective at reducing glare. However, the display's maximum full-screen brightness is limited, making it more difficult to see images on the screen in very bright environments.

6.5
Picture Quality
Text Clarity
Pixel Type
OLED
Subpixel Layout
RWBG

The ASUS ROG Swift PG34WCDM has adequate text clarity, which is worse than many other 34-inch ultrawide monitors. This is because the monitor has an unusual RWBG subpixel layout. These photos are in Windows 10, though fringing is also visible in text when ClearType is enabled in Windows 11, as you can see here. Turning off ClearType removes the text fringing, but letters also look less clear.

The monitor has a feature called Pixel Edge, which aims to reduce fringing. However, text still looks very similar, as you can see here with both ClearType and Pixel Edge enabled.

9.8
Picture Quality
Gradient
Color Depth
10 Bit

The ASUS ROG Swift PG34WCDM has fantastic gradient handling, and you won't see any banding.

Motion
9.0
Motion
Refresh Rate
Native Refresh Rate
240 Hz
Max Refresh Rate
240 Hz
Max Refresh Rate Over DP
240 Hz
Max Refresh Rate Over HDMI
240 Hz
Max Refresh Rate Over DP @ 10-bit
240 Hz
Max Refresh Rate Over HDMI @ 10-Bit
240 Hz
Motion
Variable Refresh Rate (VRR)
FreeSync
Yes
G-SYNC
Compatible (NVIDIA Certified)
VRR Maximum
240 Hz
VRR Minimum
< 20 Hz
VRR Supported Connectors
DisplayPort, HDMI
Variable Refresh Rate
Yes

The ASUS ROG Swift PG34WCDM is G-SYNC compatible over DisplayPort, which works up to 240Hz. However, we were only able to get 240Hz over HDMI with an RTX 4080, and we couldn't reach 240Hz with either an RTX 3060 or 4070 over HDMI. On AMD cards, FreeSync Premium Pro is supported, and 240Hz works over HDMI and DisplayPort.

Like other OLED monitors, it has VRR flicker, especially in dark scenes.

9.9
Motion
Response Time @ Max Refresh Rate
Recommended Overdrive Setting
No Overdrive
Rise / Fall Time
0.3 ms
Total Response Time
1.1 ms
Overshoot Error
0.8%
Worst 3 Rise / Fall Time
0.3 ms
Worst 3 Total Response Time
4.1 ms
Worst 3 Overshoot Error
6.3%

Overdrive SettingResponse Time ChartResponse Time TablesMotion Blur Photo
No OverdriveChartTablePhoto

The response time is outstanding, and there's almost no motion blur with fast-moving objects.

9.8
Motion
Response Time @ 120Hz
Recommended Overdrive Setting
No Overdrive
Rise / Fall Time
0.5 ms
Total Response Time
2.0 ms
Overshoot Error
0.9%
Worst 3 Rise / Fall Time
0.5 ms
Worst 3 Total Response Time
8.3 ms
Worst 3 Overshoot Error
7.1%

Overdrive SettingResponse Time ChartResponse Time TablesMotion Blur Photo
No OverdriveChartTablePhoto

The response time at 120Hz is outstanding and is almost as fast as at its max refresh rate. Motion blur isn't noticeable with fast-moving objects.

9.7
Motion
Response Time @ 60Hz
Recommended Overdrive Setting
No Overdrive
Rise / Fall Time
0.9 ms
Total Response Time
3.3 ms
Overshoot Error
0.7%
Worst 3 Rise / Fall Time
0.9 ms
Worst 3 Total Response Time
16.5 ms
Worst 3 Overshoot Error
6.1%

Overdrive SettingResponse Time ChartResponse Time TablesMotion Blur Photo
No OverdriveChartTablePhoto

The response time at 60Hz remains outstanding, and there's almost no trail behind fast-moving objects. However, it's slightly less crisp than at higher refresh rates. Additionally, some persistence blur is visible.

Motion
Backlight Strobing (BFI)
Backlight Strobing (BFI)
Yes
Maximum Frequency
120 Hz
Minimum Frequency
120 Hz
Longest Pulse Width Brightness
115 cd/m²
Shortest Pulse Width Brightness
115 cd/m²
Pulse Width Control
No
Pulse Phase Control
No
Pulse Amplitude Control
Yes
VRR At The Same Time
No

This monitor supports black frame insertion (BFI) to reduce persistence blur. However, it only works at 120Hz, where the screen is off for half the frame time, and the image displays for the other half. You can adjust brightness while BFI is enabled. You can see a picture with BFI enabled and exposure increased, so brightness looks closer to standard levels here.

10
Motion
Image Flicker
Flicker-Free
No
PWM Dimming Frequency
0 Hz

The ASUS ROG Swift PG34WCDM technically isn't flicker-free because a slight dip in brightness corresponds to the 240Hz refresh rate. However, it isn't the same as pulse width modulation because it isn't a full screen on and off, and you won't notice this flicker.

Inputs
9.0
Inputs
Input Lag
Native Resolution @ Max Hz
2.7 ms
Native Resolution @ 120Hz
5.0 ms
Native Resolution @ 60Hz
9.5 ms
Backlight Strobing (BFI)
10.4 ms

The monitor has low input lag for a responsive feel.

8.4
Inputs
Resolution And Size
Native Resolution
3440 x 1440
Aspect Ratio
21:9
Megapixels
5.0 MP
Pixel Density
109 PPI
Measured Screen Diagonal
34.1"
Screen Area
415 in²

The ASUS ROG Swift OLED PG34WCDM has a large, high-resolution screen with a 21:9 aspect ratio. This means you get more horizontal space for an immersive gaming experience.

7.0
Inputs
PS5 Compatibility
4k @ 120Hz
No
4k @ 60Hz
Yes
1440p @ 120Hz
Yes
1440p @ 60Hz
Yes
1080p @ 120Hz
Yes
1080p @ 60Hz
Yes
HDR
Yes
VRR
No

The ASUS ROG Swift OLED PG34WCDM works decently with PS5. However, unless you stretch the PS5's image to 21:9, which distorts your games, you can't use VRR. Additionally, if you stretch the image to 21:9, it doesn't work at 1440p.

6.7
Inputs
Xbox Series X|S Compatibility
4k @ 120Hz
No
4k @ 60Hz
Yes
1440p @ 120Hz
No
1440p @ 60Hz
Yes
1080p @ 120Hz
Yes
1080p @ 60Hz
Yes
HDR
Yes
VRR
No

The ASUS ROG Swift OLED PG34WCDM works decently with Xbox Series X|S. However, as with PS5, unless you stretch the Xbox's image to 21:9, which distorts your games, you can't use VRR. Additionally, if you do stretch the image to 21:9, VRR still doesn't work in 1440p.

Inputs
Inputs Photos
Inputs
Video And Audio Ports
DisplayPort
1 (DP 1.4)
Mini DisplayPort
No
HDMI
2 (HDMI 2.1)
HDMI 2.1 Rated Speed
48Gbps (FRL 12x4)
DVI
No
VGA
No
Daisy Chaining
No
3.5mm Audio Out
1
HDR10
Yes
3.5mm Audio In
No
3.5mm Microphone In
No

This monitor has an SPDIF output, also known as an optical audio output. This allows audio to remain digital and enables processing by a dedicated audio device, like a receiver or speakers with an optical input. This can produce higher-quality audio than a monitor's typical analog audio output.

Inputs
USB
USB-A Ports
2
USB-A Rated Speed
5Gbps (USB 3.2 Gen 1)
USB-B Upstream Port
Yes
USB-C Ports
1
USB-C Upstream
Yes
USB-C Rated Speed
5Gbps (USB 3.2 Gen 1)
USB-C Power Delivery
90W
USB-C DisplayPort Alt Mode
Yes
Thunderbolt
No

With the USB-C port, you can connect your laptop and charge it simultaneously, as the 90W of power the monitor delivers is high enough to charge most laptops.

Inputs
macOS Compatibility

ConnectionHDMI 2.0HDMI 2.1USB-C
Max Refresh Rate60Hz240Hz240Hz
VRR RangeN/A40-240Hz40-240Hz
HDRYesYesYes

This monitor works well with macOS. When using a MacBook, windows return to their original position when reopening the lid or waking the laptop up from sleep. However, while this happens almost instantly with USB-C, it takes approximately 10–20 seconds with HDMI 2.0 and 5–10 seconds with HDMI 2.1.

Features
Features
Additional Features
Speakers
No
RGB Illumination
Controllable
Multiple Input Display
PIP + PBP
KVM Switch
Yes

This monitor has a few extra features, including:

  • Smart KVM: Lets you quickly switch between two computers while using the same keyboard and mouse connected to the monitor. Additionally, this monitor can transition the keyboard and mouse from one computer to another by moving the mouse across a defined line on the screen without changing settings or pressing a button. Additionally, you can move files between the two connected computers via drag-and-drop or via clipboard.
  • Aura RGB: Controls the RGB lighting on the back of the monitor and the stand.
  • Blue Light Filter: Reduces blue light to help lessen eye strain.
  • GamePlus: Includes different gaming features like an FPS counter, crosshairs, sniper mode, stopwatch, and timer.
  • Shadow Boost: Adjusts gamma so that you can see opponents better in dark scenes.

Like most OLED displays, there are also a few settings to help reduce the risk of burn-in, which you can find in the Screen Protection section of the OSD:

  • Auto Logo Brightness: Dims static logos that are on the screen, like if you're watching TV.
  • Pixel Cleaning: Calibrates any issues that may arise on the screen when your monitor is on for a long time. It happens after you turn off the screen and takes about six minutes to finish. There's also a setting to remind you to turn off the monitor so it can perform the cycle.
  • Screen Move: Moves the image by a few pixels to one side to help reduce the risk of burn-in.
  • Screen Saver: Automatically dims the screen when there's inactivity.

ASUS also offers a two-year burn-in warranty. Burn-in can occur with constant exposure to the same static elements over time, so the best ways to reduce the risk of burn-in is by watching varied content, hiding the taskbar, using a black background, and taking advantage of these settings. You can learn about our current longevity and burn-in test here.

Features
On-Screen Display (OSD)