Display
34 in, VA, 3440 x 1440 pixels
34
Refresh Rate
48 Hz - 120 Hz
48 Hz
Brightness
300 cd/m²
300 cd
Contrast Ratio
3000 : 1
3000
Overview
Built around a VA panel, the Dell S3425DW runs at 3440 x 1440 pixels with a 48 Hz - 120 Hz refresh range. Motion handling is rated at 1 ms GtG. Colour and light output come in at 300 cd/m² typical brightness, 3000 : 1 contrast and 99% sRGB coverage. For adaptive sync, it supports FreeSync. Ports include 2x HDMI 2.1, 2x USB-A, 1x USB-B upstream.
BrandDellPanel TypeVAResolution3440 x 1440 pixelsRefresh Rate48 Hz - 120 Hz
Key Highlights
- Dell S3425DW speed | 48 Hz - 120 Hz refresh with 1 ms GtG response
- Dell S3425DW sync | FreeSync
- Dell S3425DW hub | 1 USB-B upstream and 2 USB-A downstream ports
- Dell S3425DW image | 300 cd/m² brightness and 3000 : 1 contrast
Who Should Buy the Dell S3425DW
+ Best For
Ultrawide productivity
3440 x 1440 provides a broad workspace
USB-C laptop users
the upstream port supplies up to 65 W
Mixed work and media
95% DCI-P3 and 10-bit via FRC are listed
Single-desk device switching
the KVM feature is included
× Not Ideal For
Competitive gamers
120 Hz is moderate rather than elite
HDR buyers
peak brightness is not published
Users needing full port certainty
the supplied ports line is cut off
Portrait workflows
the ultrawide stand has no pivot
Display Performance
Refresh Rate
48 Hz - 120 Hz
Standard refresh range
Response Time
1 ms GtG
Manufacturer-published transition time
Brightness
300 cd/m²
Typical brightness as specified; peak figure not published
Contrast
3000 : 1
Strong VA dark-scene contrast
Colour Gamut
99% sRGB
Standard game and web colour
HDR
HDR10
Peak brightness and local dimming not separately published
Gaming Performance
Refresh Rate48 Hz - 120 HzMatch frame rate to the monitor’s useful range
Response Time1 ms (GtG)Published claim without independent testing
VRR / Adaptive SyncFreeSyncHelps reduce tearing on compatible GPUs
GPU Requirement3440 x 1440 pixels up to 120 HzEntry-to-mid-range GPU is generally sufficient
HDR & Brightness Reality
The S3425DW supports HDR10, but the sheet does not publish peak brightness or a DisplayHDR level. Its 300 cd/m² typical brightness and 3000:1 VA contrast may give acceptable contrast for ordinary media, yet there is no evidence of strong highlight output or local dimming. The 95% DCI-P3 figure helps colour range, but HDR should be treated as basic signal compatibility until fuller luminance data is available.
Connectivity & Ports
HDMI2x HDMI 2.1Published port count and version
DisplayPortNot publishedCheck before buying
USB-CNot publishedNo one-cable laptop or charging function
USB Hub1x USB-B upstream / 2x USB-A downstreamPeripherals can run through the screen
Audio OutNot listedCheck before buying if you need audio from the monitor
Desk Fit & Ergonomics
Size / Footprint807.32 × 411.53 × 221.85 mmCheck desk width and depth before purchase
StandRemovable: YesA separate arm can replace the supplied base
VESA Mount100 x 100 mmUse a matching arm or wall mount
Tilt-5 ° to +21 °Covers the published forward and backward range
Height Adjust130 mm (5.12 in)Supports eye-level positioning
Swivel / PivotNo swivel; No pivotMovement is limited by the supplied stand
Real-World Use Cases
the 34-inch 3440 x 1440 canvas suits several windows
USB-C carries video, data and up to 65 W power
the listed KVM switch can simplify two-system desks
120 Hz and FreeSync Premium improve motion over 60 Hz
Pros & Cons
Pros
- 48 Hz 120 Hz refresh range with 1 ms GtG response supports fast-paced use
- FreeSync give broad adaptive-sync compatibility
- Built-in USB hub adds convenient peripheral connectivity
- Stand offers 130 mm (5.12 in) height adjustment
- 99% sRGB coverage is published for the panel
Cons
- No listed built-in speakers
Score & Ratings
7.8/10
Great
Model Information
5
| Specification | Value |
|---|---|
| Brand | Dell |
| Model | S3425DW |
| Full Product Name | Dell S3425DW |
| Model Year | 2025 |
| Available Colors | Black |
Display & Panel
11
| Specification | Value | What It Means |
|---|---|---|
| Screen Size | 34 in | |
| Exact Diagonal | 864.25 mm (34.03 in) | |
| Radius of Curvature | 1800R | |
| Aspect Ratio | 2.389:1 | |
| Active Display Width | 797.22 mm (31.39 in) | |
| Active Display Height | 333.72 mm (13.14 in) | |
| Screen-to-Body Ratio | 92.63% | |
| Panel Type | VA | VA affects viewing angles, black depth and color consistency — each panel technology trades these off differently. |
| Backlight Type | W-LED | |
| 3D Support | No | |
| Screen Coating | Anti-glare/Matte (3H) |
Resolution & Pixel Details
3
| Specification | Value | What It Means |
|---|---|---|
| Native Resolution | 3440 x 1440 pixels | |
| Pixel Density | 109 ppi | 109 ppi indicates how much scaling may be needed in the operating system for comfortable reading. |
| Pixel Pitch | 0.232 mm (0.01 in) |
Picture Quality & Color
11
| Specification | Value | What It Means |
|---|---|---|
| Panel Bit Depth | 10 bits | |
| FRC | Yes | |
| Display Colors | 1073.7 million colors (30 bits) | |
| Typical Brightness | 300 cd/m² | |
| Static Contrast Ratio | 3000 : 1 | |
| Horizontal Viewing Angle | 178 ° | |
| Vertical Viewing Angle | 178 ° | |
| HDR Support | Yes | |
| HDR10 | Yes | |
| sRGB Coverage | 99% | 99% indicates how much of that color space the panel can reproduce, which affects color accuracy for photo/video work. |
| DCI-P3 Coverage | 95% |
Refresh Rate, Response & Gaming
3
| Specification | Value |
|---|---|
| Refresh Rate Range | 48 Hz - 120 Hz |
| Minimum Response Time | 1 ms |
| AMD FreeSync | Yes (Premium) |
Ports & Connectivity
8
| Specification | Value |
|---|---|
| HDMI Ports | 2 |
| HDMI Version | 2.1 |
| USB-C Video Input | 1× USB-C |
| DisplayPort Alt Mode | Yes |
| HDCP Support | Yes |
| HDCP Version | 2.2 |
| USB-A Ports | 2 |
| USB-B Upstream | 1 |
Audio, Camera, Network & Smart Features
1
| Specification | Value |
|---|---|
| Built-In Camera | No |
Ergonomics & Stand
10
| Specification | Value | What It Means |
|---|---|---|
| VESA Mount | Yes | |
| VESA Size | 100 x 100 mm | |
| Removable Stand | Yes | |
| Height Adjustment | Yes | 130 mm (5.12 in) of travel allows the screen to be raised or lowered for a comfortable eye-level position. |
| Height Adjustment Range | 130 mm (5.12 in) | |
| Tilt Adjustment | Yes | |
| Forward Tilt | 5 ° | |
| Backward Tilt | 21 ° | |
| Swivel Adjustment | No | |
| Pivot Adjustment | No |
Dimensions, Weight & Design
7
| Specification | Value |
|---|---|
| Dimensions With Stand | 807.32 × 411.53 × 221.85 mm |
| Dimensions Without Stand | 807.32 × 355.77 × 116.89 mm |
| Weight With Stand | 9.38 kg (20.68 lbs) |
| Weight Without Stand | 6.91 kg (15.23 lbs) |
| Stand Width | 259 mm (10.20 in) |
| Stand Depth | 221.85 mm (8.73 in) |
| Security Lock Slot | Yes |
Power & Operating Conditions
15
| Specification | Value |
|---|---|
| Power Input | 100–240V |
| 110V Input Range | 100 V - 120 V |
| 220V Input Range | 220 V - 240 V |
| AC Frequency | 50 Hz - 60 Hz |
| Electric Current | 2 A |
| Average Power Consumption | 31 W |
| Maximum Power Consumption | 175 W |
| Sleep Consumption | 0.4 W |
| Off Consumption | 0.3 W |
| Operating Temperature | 0 °C - 40 °C (32 °F - 104 °F) |
| Operating Humidity | 10% - 80% |
| Operating Altitude | 5000 m |
| Storage Temperature | -20 °C - 60 °C (-4 °F - 140 °F) |
| Storage Humidity | 5% - 90% |
| Storage Altitude | 12192 m |
Eye Care, Protection & Additional Features
4
| Specification | Value |
|---|---|
| Flicker-Free | Yes |
| Low Blue Light | Yes |
| ComfortView Plus | Yes |
| Additional Monitor Features | Dell Easy Arrange; KVM Switch; Picture-by-Picture; Picture-in-Picture |
Certifications, Standards & Licenses
2
| Specification | Value |
|---|---|
| Energy Star | Yes |
| RoHS | Yes |
Frequently Asked Questions
01 What can the 65 W USB-C connection handle? +
It can carry DisplayPort Alt Mode, USB data and up to 65 W power. That suits many office laptops, but higher-power mobile workstations may still need their own charger.
02 Why is the Dell port list incomplete here? +
The supplied sheet stops after the two USB Type-A ports. HDMI, DisplayPort and any remaining connections must not be invented from the truncated line.
03 Does 120 Hz make the S3425DW a gaming monitor? +
It is smoother than 60 Hz and FreeSync Premium is listed. However, its specification is better suited to mixed use than very high-frame-rate competitive play.
04 How useful are the built-in 10 W speakers? +
The monitor has two 5 W speakers, which is a stronger output figure than many basic monitor systems. The sheet does not publish frequency response or sound-quality measurements.
05 What is the main ergonomic limitation of this Dell ultrawide? +
Height adjustment reaches 130 mm and tilt runs from -5° to +21°. Swivel and pivot are not supported, so side-angle changes require moving the whole stand.
Reviews
DISPLAYINPUT · INDEPENDENT · SPEC-BASED · NO SPONSORED PLACEMENT
SHEET № S3425DW