Products
AOC CU34G2X
Dell S3422DWG
Tested using Methodology v1.2
Updated Jun 13, 2025 08:48 PM
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Tested using Methodology v2.1.1
Updated Nov 07, 2025 02:28 PM
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Max Refresh Rate
144 Hz
Size
34"
Pixel Type
VA
Native Resolution
3440 x 1440
Variable Refresh Rate
Yes
HDR10
Yes
Max Refresh Rate
144 Hz
Size
34"
Pixel Type
VA
Native Resolution
3440 x 1440
Variable Refresh Rate
Yes
HDR10
Yes
Our Verdict
AOC CU34G2X
Dell S3422DWG
The Dell S3422DWG is better for most uses than the AOC CU34G2X. While they both use the same panel type, the Dell delivers better motion handling thanks to its faster response time, and it has better picture quality due to its higher peak brightness in SDR and HDR. The AOC has a few minor advantages, though, as it has better ergonomics because it supports swivel adjustment and has better accuracy before calibration.
Variants
- CU34G2X (34")
- S3422DWG (34")
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34"
CU34G2X
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34"
S3422DWG
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34"
CU34G2X
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34"
S3422DWG
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34"
CU34G2X
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34"
S3422DWG
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CU34G2X
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S3422DWG
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Main Differences for
Mixed Usage
Mixed Usage
Threshold
Mixed Usage
7.4
Full Comparison
Design
Style
Design Picture
Curved
Yes
Yes
Curve Radius
1500R
1800R
Accelerated Longevity Test
Uniformity Pictures
Longevity Graph
Build Quality
7.0
7.0
Build Quality Picture
Ergonomics
8.0
6.7
Ergonomics Picture
Back Picture
Height Adjustment
5.5" (14.0 cm)
3.8" (9.6 cm)
Min Height To Top Of Panel
16.5" (42.0 cm)
Tilt Range
-25° to 2.5°
-22.5° to 5°
Rotate Portrait/Landscape
No
No
Swivel Range
-35° to 35°
No swivel
Wall Mount
VESA 100x100
VESA 100x100
Stand
Stand Picture
Thickness Picture
Base Width
21.3" (54.0 cm)
11.4" (29.0 cm)
Base Depth
10.0" (25.4 cm)
9.3" (23.5 cm)
Thickness (With Display)
9.1" (23.1 cm)
8.3" (21.0 cm)
Weight (With Display)
18.3 lbs (8.3 kg)
21.5 lbs (9.8 kg)
Display
Display Picture
Size
34"
34"
Housing Width
31.9" (81.0 cm)
31.9" (80.9 cm)
Housing Height
14.5" (36.8 cm)
14.4" (36.6 cm)
Thickness (Without Stand)
3.9" (9.9 cm)
5.7" (14.5 cm)
Weight (Without Stand)
14.6 lbs (6.6 kg)
17.0 lbs (7.7 kg)
Borders Size (Bezels)
0.4" (0.9 cm)
0.3" (0.9 cm)
Controls
Controls Picture
In The Box
In The Box Picture
Power Supply
Internal
Internal
Picture Quality
Contrast
7.7
7.7
Checkerboard Picture
Native Contrast
2,789 : 1
2,725 : 1
Contrast With Local Dimming
N/A
N/A
Local Dimming
0.0
0.0
Local Dimming Video
Local Dimming
No
No
Backlight
Edge
Edge
SDR Brightness
7.0
7.9
Real Scene
257 cd/m²
350 cd/m²
Peak 2% Window
265 cd/m²
344 cd/m²
Peak 10% Window
265 cd/m²
345 cd/m²
Peak 25% Window
265 cd/m²
345 cd/m²
Peak 50% Window
265 cd/m²
345 cd/m²
Peak 100% Window
264 cd/m²
344 cd/m²
Sustained 2% Window
265 cd/m²
344 cd/m²
Sustained 10% Window
265 cd/m²
344 cd/m²
Sustained 25% Window
265 cd/m²
344 cd/m²
Sustained 50% Window
264 cd/m²
345 cd/m²
Sustained 100% Window
264 cd/m²
344 cd/m²
Automatic Brightness Limiting (ABL)
0.000
0.000
Minimum Brightness
48 cd/m²
25 cd/m²
HDR Brightness
5.7
7.5
EOTF
VESA DisplayHDR Certification
No Certification
DisplayHDR 400 - 1.0/1.1
Real Scene
260 cd/m²
547 cd/m²
Peak 2% Window
258 cd/m²
519 cd/m²
Peak 10% Window
258 cd/m²
528 cd/m²
Peak 25% Window
259 cd/m²
528 cd/m²
Peak 50% Window
259 cd/m²
528 cd/m²
Peak 100% Window
259 cd/m²
527 cd/m²
Sustained 2% Window
258 cd/m²
517 cd/m²
Sustained 10% Window
258 cd/m²
527 cd/m²
Sustained 25% Window
259 cd/m²
526 cd/m²
Sustained 50% Window
259 cd/m²
526 cd/m²
Sustained 100% Window
259 cd/m²
525 cd/m²
Automatic Brightness Limiting (ABL)
0.000
0.001
Gray Uniformity
8.1
8.0
50% Uniformity Picture
50% Std. Dev.
2.639%
2.624%
50% DSE
0.139%
0.150%
Black Uniformity
6.7
8.5
Native Black Uniformity Picture
Native Std. Dev.
1.491%
0.748%
Black Uniformity Picture With Local Dimming
Std. Dev. w/ L.D.
N/A
N/A
Color Accuracy (Pre-Calibration)
7.8
5.9
Pre Calibration Picture
Pre Gamma Curve Picture
Pre Color Picture
Picture Mode
Standard (sRGB)
Standard
sRGB Gamut Area xy
95.6%
123.4%
White Balance dE (Avg.)
4.69
5.23
Color Temperature (Avg.)
7,029 K
6,347 K
Gamma (Avg.)
2.16
1.98
Color dE (Avg.)
3.09
4.42
Contrast Setting
N/A
75
RGB Settings
Default
Default
Gamma Setting
Default
No Gamma Setting
Brightness Setting
80
75
Measured Brightness
188 cd/m²
157 cd/m²
Brightness Locked
No
No
Color Accuracy (Post-Calibration)
9.6
9.7
Post Calibration Picture
Post Gamma Curve Picture
Post Color Picture
Picture Mode
Standard
Custom Color
sRGB Gamut Area xy
97.0%
98.5%
White Balance dE (Avg.)
0.51
0.66
Color Temperature (Avg.)
6,494 K
6,536 K
Gamma (Avg.)
2.19
2.19
Color dE (Avg.)
0.53
0.51
Contrast Setting
50
75
RGB Settings
50-44-46
Gain (100-100-91), Offset (53-50-53)
Gamma Setting
Gamma 1
Default
Brightness Setting
58
43
Measured Brightness
101 cd/m²
99 cd/m²
SDR Color Gamut
9.1
9.3
sRGB Color Gamut Picture
sRGB Coverage xy
97.2%
98.5%
sRGB Picture Mode
Standard
Custom Color
Adobe RGB Color Gamut Picture
Adobe RGB Coverage xy
84.3%
82.4%
Adobe RGB Picture Mode
Standard
Custom Color
HDR Color Gamut
7.8
7.5
Wide Color Gamut
Yes
Yes
DCI-P3 Color Gamut Picture
DCI-P3 Coverage xy
89.5%
86.8%
DCI-P3 Picture Mode
HDR Game
DisplayHDR 400
Rec. 2020 Color Gamut Picture
Rec. 2020 Coverage xy
61.2%
64.4%
Rec. 2020 Picture Mode
HDR Game
DisplayHDR 400
HDR Color Volume
7.5
7.5
DCI-P3 Color Volume ITP Picture
1,000 cd/m² DCI-P3 Coverage ICtCp
76.9%
67.7%
DCI-P3 Picture Mode
HDR Game
DisplayHDR 400
Rec. 2020 Color Volume ITP Picture
10,000 cd/m² Rec. 2020 Coverage ICtCp
57.6%
30.4%
Rec. 2020 Picture Mode
HDR Game
DisplayHDR 400
Viewing Angle
6.4
6.2
Viewing Angle Video
Chroma Graph
Color Washout From Left
35°
35°
Color Washout From Right
36°
36°
Hue Graph
Color Shift From Left
61°
70°
Color Shift From Right
64°
70°
Lightness Graph
Brightness Loss From Left
41°
33°
Brightness Loss From Right
42°
34°
Black Level Raise From Left
16°
21°
Black Level Raise From Right
16°
21°
Gamma Shift From Left
18°
12°
Gamma Shift From Right
17°
14°
Text Clarity
7.5
7.5
ClearType On
ClearType Off
Pixel Type
VA
VA
Pixels
Subpixel Layout
RGB
RGB
Direct Reflections
6.5
Ring Light Picture
Direct Reflections Graph
Peak Direct Reflection Intensity
31.6%
Screen Finish
Matte
Matte
Ambient Black Level Raise
8.1
Black Level Raise Picture
Ambient Black Level Raise Graph
Black Luminance @ 0 lx
0.10 cd/m²
Black Luminance @ 1000 lx
0.88 cd/m²
Total Reflected Light
0.9
Bright Room Off Picture
Total Reflection Ring Light Picture
Total Reflected Light Intensity
58,535% ⋅ pixel
Diffraction Artifacts
No
Gradient
8.6
9.7
Gradient Picture
Color Depth
10 Bit
10 Bit
Vertical Viewing Angle
5.7
Vertical Viewing Angle Video
Vertical Chroma Graph
Color Washout From Below
29°
Color Washout From Above
31°
Vertical Hue Graph
Color Shift From Below
62°
Color Shift From Above
63°
Vertical Lightness Graph
Brightness Loss From Below
32°
Brightness Loss From Above
34°
Black Level Raise From Below
12°
Black Level Raise From Above
12°
Gamma Shift From Below
12°
Gamma Shift From Above
11°
SDR Color Volume
9.7
sRGB Color Volume ITP Picture
sRGB In ICtCp
98.8%
sRGB Picture Mode
Standard
Adobe RGB Color Volume ITP Picture
Adobe RGB In ICtCp
89.6%
Adobe RGB Picture Mode
Standard
Reflections
7.1
Average Room
Average Room Off Picture
Bright Room Off Picture
Screen Finish
Matte
Matte
Total Reflections
6.1%
Indirect Reflections
3.4%
Calculated Direct Reflections
2.7%
Motion
Refresh Rate
8.3
7.4
Native Refresh Rate
144 Hz
144 Hz
Max Refresh Rate
144 Hz
144 Hz
Max Refresh Rate Over DP
144 Hz
144 Hz
Max Refresh Rate Over HDMI
100 Hz
100 Hz
Max Refresh Rate Over DP @ 10-bit
144 Hz
144 Hz
Max Refresh Rate Over HDMI @ 10-Bit
60 Hz
60 Hz
DSC Toggle
No
DSC Off Max Refresh Rate Over DP
N/A
DSC Off Max Refresh Rate Over HDMI
N/A
Variable Refresh Rate (VRR)
Variable Refresh Rate
Yes
Yes
FreeSync
Yes
Yes
G-SYNC
Compatible (Tested)
Compatible (Tested)
VRR Maximum
144 Hz
144 Hz
VRR Minimum
< 20 Hz
< 20 Hz
VRR Supported Connectors
DisplayPort, HDMI
DisplayPort, HDMI
VRR Motion Performance
6.9
Pursuit Photo VRR
OD Mode CAD Comparison
Recommended VRR OD Setting
Super Fast
Variable Overdrive Advertised
No
Avg. CAD
235
Best CAD
215
Worst CAD
288
Refresh Rate Compliance
7.0
Fast GTG Sequence
VRR Compliance
Compliance @ Max Hz
51%
Compliance @ 120 FPS
57%
Compliance @ 60 FPS
69%
Response Time @ 60Hz
4.8
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
Medium
Fast
Rise / Fall Time
11.2 ms
14.2 ms
Total Response Time
22.4 ms
14.3 ms
Overshoot Error
0.3%
0 RGB
Worst 3 Rise / Fall Time
18.0 ms
26.4 ms
Worst 3 Total Response Time
37.0 ms
26.4 ms
Worst 3 Overshoot Error
3.2%
1 RGB
CAD @ Max Refresh Rate
6.5
Pursuit Photo At Max Refresh
CAD Heatmap At Max Refresh
OD Transition Max Refresh Rate
OD extreme
0 to 31
Recommended Overdrive Setting
Super Fast
Avg. CAD
219
Best 10% CAD
71
Worst 10% CAD
514
Response Time @ Max Refresh Rate
First Response Time
9.1 ms
8.7 ms
Total Response Time
20.3 ms
9.6 ms
Recommended Overdrive Setting
Medium
Super Fast
Motion Blur Picture
RGB Overshoot
0.0%
1 RGB
Worst 10% RGB Overshoot
0.0%
11 RGB
Worst 10% First Response Time
19.7 ms
23.7 ms
Worst 10% Total Response Time
36.3 ms
23.7 ms
Heatmap First Response
Heatmap Total Response
Heatmap RGB Overshoot
Response Time Table
CAD @ 120Hz
7.0
Pursuit Photo 120Hz
CAD Heatmap 120Hz
OD Transition 120Hz
OD extreme
0 to 31
Recommended Overdrive Setting
Super Fast
Avg. CAD
197
Best 10% CAD
64
Worst 10% CAD
391
Response Time @ 120Hz
Worst 10% First Response Time
19.9 ms
18.4 ms
RGB Overshoot
0.0%
3 RGB
Total Response Time
19.9 ms
9.0 ms
First Response Time
9.3 ms
6.7 ms
Recommended Overdrive Setting
Medium
Super Fast
Worst 10% Total Response Time
35.3 ms
18.4 ms
Worst 10% RGB Overshoot
0.0%
18 RGB
120Hz First Response Heatmap
120Hz Total Response Heatmap
120Hz Heatmap RGB Overshoot
Motion Blur Picture
Response Time Table
CAD @ 60Hz
6.0
Pursuit Photo 60Hz
CAD Heatmap 60Hz
OD Transition 60Hz
OD extreme
0 to 31
Recommended Overdrive Setting
Fast
Avg. CAD
277
Best 10% CAD
86
Worst 10% CAD
487
Response Time @ 60Hz
Recommended Overdrive Setting
Medium
Fast
First Response Time
11.2 ms
14.2 ms
Total Response Time
22.4 ms
14.3 ms
RGB Overshoot
0.3%
0 RGB
Worst 10% Total Response Time
37.0 ms
26.4 ms
Worst 10% First Response Time
18.0 ms
26.4 ms
Worst 10% RGB Overshoot
3.2%
1 RGB
60Hz First Response Heatmap
60Hz Total Response Heatmap
60Hz RGB Overshoot Heatmap
Backlight Strobing (BFI)
Backlight Strobing Picture
Backlight Strobing Frequency Picture
Backlight Strobing (BFI)
Yes
Yes
Maximum Frequency
144 Hz
144 Hz
Minimum Frequency
100 Hz
100 Hz
Longest Pulse Width Brightness
211 cd/m²
192 cd/m²
Shortest Pulse Width Brightness
76 cd/m²
192 cd/m²
Pulse Width Control
Yes
No
Pulse Phase Control
No
No
Pulse Amplitude Control
No
No
VRR At The Same Time
No
No
VRR Flicker
4.0
VRR Flicker Video
VRR Flicker Graph
Dark Gray Flicker
6.0 RGB
Middle Gray Flicker
3.2 RGB
Light Gray Flicker
1.9 RGB
Image Flicker
10
10
Backlight Picture
Flicker-Free
Yes
Yes
PWM Dimming Frequency
0 Hz
0 Hz
Inputs
Input Lag
8.7
8.8
Native Resolution @ Max Hz
5.1 ms
4.5 ms
Native Resolution @ 120Hz
5.6 ms
5.0 ms
Native Resolution @ 60Hz
9.6 ms
10.2 ms
Backlight Strobing (BFI)
7.4 ms
7.5 ms
Resolution
8.4
7.7
Native Resolution
3440 x 1440
3440 x 1440
Aspect Ratio
21:9
21:9
Megapixels
5.0 MP
5.0 MP
Pixel Density
110 PPI
110 PPI
Measured Screen Diagonal
34.0"
Screen Area
412 in²
PS5 Compatibility
6.0
4.9
PS5 Compatibility Photo
PS5 Compatibility Table
4k @ 120Hz
No
No
4k @ 60Hz
Yes
Yes
1440p @ 120Hz
No
Yes
1440p @ 60Hz
No
Yes
1080p @ 120Hz
No
Yes
1080p @ 60Hz
Yes
Yes
HDR
Yes
VRR
No
Xbox Series X|S Compatibility
8.3
6.8
XSX Compatibility Photo
XSX Compatibility Table
4k @ 120Hz
No
No
4k @ 60Hz
Yes
Yes
1440p @ 120Hz
No
Yes
1440p @ 60Hz
Yes
Yes
1080p @ 120Hz
Yes
Yes
1080p @ 60Hz
Yes
Yes
HDR
Yes
VRR
Yes
Inputs Photos
Inputs 1
Inputs 2
Inputs
Inputs 1
Inputs 2
DisplayPort
2 (DP 1.4)
1 (DP 1.4)
DisplayPort Transmission Bandwidth
No DisplayPort 2.1
Mini DisplayPort
No
No
DVI
No
HDMI
2 (HDMI 2.0)
2 (HDMI 2.0)
VGA
No
HDMI 2.1 Bandwidth
No HDMI 2.1
No HDMI 2.1
Daisy Chaining
No
No
3.5mm Audio Out
1
Yes
3.5mm Audio In
No
3.5mm Microphone In
No
Ethernet
No
HDR10
Yes
Yes
Dolby Vision
No
USB
USB-A Ports
4
4
USB-A Rated Speed
5Gbps (USB 3.2 Gen 1)
5Gbps (USB 3.2 Gen 1)
USB-B Upstream Port
Yes
Yes
USB-C Ports
0
0
USB-C Upstream
No USB-C Ports
No USB-C Ports
USB-C Rated Speed
No USB-C Ports
No USB-C Ports
USB-C Power Delivery
No USB-C Ports
No USB-C Ports
USB-C DisplayPort Alt Mode
No USB-C Ports
No USB-C Ports
Thunderbolt
No
No
macOS Compatibility
macOS Screenshot
Features
Additional Features
Speakers
No
No
RGB Illumination
No
Fixed (On/Off)
Multiple Input Display
PIP + PBP
PIP + PBP
KVM Switch
No
No
Smart OS
No
On-Screen Display (OSD)
OSD Picture
Check Price
34"
CU34G2X
SEE PRICE
Amazon.com
34"
S3422DWG
SEE PRICE
Walmart.com
34"
CU34G2X
SEE PRICE
Walmart.com
34"
S3422DWG
SEE PRICE
Amazon.com
34"
CU34G2X
SEARCH
B&H
34"
S3422DWG
SEARCH
B&H
34"
CU34G2X
SEARCH
BestBuy.com
34"
S3422DWG
SEARCH
BestBuy.com
AOC CU34G2X
Dell S3422DWG
Comments
AOC CU34G2X vs Dell S3422DWG: Main Discussion
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