Display
34.14 in, AH-IPS, 3440 x 1440 pixels
34.14
Refresh Rate
56 Hz - 76 Hz
56 Hz
Brightness
350 cd/m²
350 cd
Contrast Ratio
2000 : 1
2000
Overview
The Dell U3423WE is an 3440 x 1440 pixels AH-IPS monitor rated for a 56 Hz - 76 Hz refresh range. On the picture-quality side, it’s specified at 350 cd/m² typical brightness, 2000 : 1 contrast and 100% sRGB coverage. On the response-time front, it’s specified at 5 ms GtG. For hookups, there’s 2x HDMI 2.1, 1x DisplayPort 1.4, 5x USB-A. Independent research on this model adds one useful note: Predecessor to U3425WE (2024 model) which added Thunderbolt 4 and 120Hz.
BrandDellPanel TypeAH-IPSResolution3440 x 1440 pixelsRefresh Rate56 Hz - 76 Hz
Key Highlights
- Dell U3423WE speed | 56 Hz - 76 Hz refresh with 5 ms GtG response
- Dell U3423WE hub | 5 USB-A downstream ports
- Dell U3423WE image | 350 cd/m² brightness and 2000 : 1 contrast
Who Should Buy the Dell U3423WE
+ Best For
Two-machine desks
the KVM switch shares peripherals automatically
Multi-window work
3440 x 1440 fits two documents side by side
Meeting-heavy roles
10 W of built-in audio without extra hardware
Design review
98% DCI-P3 and 100% sRGB out of the box
× Not Ideal For
Gamers
76 Hz with a 5 ms response is not a gaming spec
HDR content
no HDR support is listed at all
Laptop charging
the USB-C upstream is data only
Dark-room film
2000:1 IPS contrast cannot match OLED
Display Performance
Refresh Rate
56 Hz - 76 Hz
Standard refresh range
Response Time
5 ms GtG
Manufacturer-published transition time
Brightness
350 cd/m²
Typical brightness as specified; peak figure not published
Contrast
2000 : 1
Standard panel black depth
Colour Gamut
100% sRGB
Standard game and web colour
Gaming Performance
Refresh Rate56 Hz - 76 HzMatch frame rate to the monitor’s useful range
Response Time5 ms (GtG)Published claim without independent testing
GPU Requirement3440 x 1440 pixels up to 76 HzEntry-to-mid-range GPU is generally sufficient
HDR & Brightness Reality
There is no HDR listed on this monitor at all - no DisplayHDR tier, no HDR10 line - and for a business panel that is the right call rather than an omission. Adding an HDR400 badge to a 350 cd/m2 screen would promise something the hardware cannot do. What the panel does offer is 2000:1 contrast, double the usual IPS figure, and 98% DCI-P3 colour. Those are the numbers that matter for the spreadsheets, documents and design reviews this monitor was built for.
Connectivity & Ports
HDMI2x HDMI 2.1Published port count and version
DisplayPort1x DisplayPort 1.4Primary high-refresh PC connection
USB-CYesSupports USB-C input
USB Hub5x USB-A downstreamPeripherals can run through the screen
Audio Out3.5 mm audio outExternal audio may still be preferred
Desk Fit & Ergonomics
Size / Footprint813.26 × 392.77 × 237.44 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 Adjust150 mm (5.91 in)Supports eye-level positioning
Swivel / Pivot±30 ° / No pivotSupports shared angles and portrait rotation
Real-World Use Cases
the KVM switch moves keyboard and mouse between systems
3440 x 1440 shows far more columns than 16:9
10 W of built-in audio, no headset required
98% DCI-P3 and 100% sRGB on a colour-consistent AH-IPS panel
Pros & Cons
Pros
- 56 Hz 76 Hz refresh range with 5 ms GtG response supports fast-paced use
- Built-in USB hub adds convenient peripheral connectivity
- Stand offers 150 mm (5.91 in) height adjustment, swivel
- 100% sRGB coverage is published for the panel
Cons
- 76 Hz with a 5 ms response not for gaming
- USB-C is data only, so no laptop charging
- No HDR support of any kind listed
- 2022 model at a still-premium price
Score & Ratings
7.2/10
Great
Model Information
8
| Specification | Value |
|---|---|
| Brand | Dell |
| Series | UltraSharp |
| Model | U3423WE |
| Model Alias | UltraSharp U3423WE |
| Full Product Name | Dell U3423WE |
| Model Year | 2022 |
| Available Colors | Platinum Silver |
| Warranty | 3-Year Advanced Exchange Service and Premium Panel Exchange |
Display & Panel
11
| Specification | Value | What It Means |
|---|---|---|
| Screen Size | 34.14 in | |
| Exact Diagonal | 867.16 mm (34.14 in) | |
| Radius of Curvature | 1900R | |
| Aspect Ratio | 2.389:1 | |
| Active Display Width | 800.05 mm (31.50 in) | |
| Active Display Height | 335.05 mm (13.19 in) | |
| Screen-to-Body Ratio | 91.8% | |
| Panel Type | AH-IPS | AH-IPS 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 | 0.233 mm (0.01 in) |
Picture Quality & Color
8
| Specification | Value | What It Means |
|---|---|---|
| Panel Bit Depth | 10 bits | |
| Display Colors | 1073.7 million colors (30 bits) | |
| Typical Brightness | 350 cd/m² | |
| Static Contrast Ratio | 2000 : 1 | |
| Horizontal Viewing Angle | 178 ° | |
| Vertical Viewing Angle | 178 ° | |
| sRGB Coverage | 100% | 100% indicates how much of that color space the panel can reproduce, which affects color accuracy for photo/video work. |
| DCI-P3 Coverage | 98% |
Refresh Rate, Response & Gaming
2
| Specification | Value |
|---|---|
| Refresh Rate Range | 56 Hz - 76 Hz |
| Minimum Response Time | 5 ms |
Ports & Connectivity
11
| Specification | Value |
|---|---|
| HDMI Ports | 2 |
| HDMI Version | 2.1 |
| DisplayPort Input | 1 |
| DisplayPort Version | 1.4 |
| USB-C Video Input | 1× USB-C |
| DisplayPort Alt Mode | Yes |
| HDCP Support | Yes |
| USB-C Input | Yes |
| USB-C Power Delivery | 90 W |
| USB-A Ports | 5 |
| Audio Output | Yes |
Audio, Camera, Network & Smart Features
5
| Specification | Value |
|---|---|
| Built-In Speakers | Yes |
| Speaker Configuration | 2 x 5 W |
| Total Speaker Output | 10 W |
| Built-In Camera | No |
| Ethernet | Yes |
Ergonomics & Stand
12
| Specification | Value | What It Means |
|---|---|---|
| VESA Mount | Yes | |
| VESA Size | 100 x 100 mm | |
| Removable Stand | Yes | |
| Height Adjustment | Yes | 150 mm (5.91 in) of travel allows the screen to be raised or lowered for a comfortable eye-level position. |
| Height Adjustment Range | 150 mm (5.91 in) | |
| Tilt Adjustment | Yes | |
| Forward Tilt | 5 ° | |
| Backward Tilt | 21 ° | |
| Swivel Adjustment | Yes | |
| Left Swivel | 30 ° | |
| Right Swivel | 30 ° | |
| Pivot Adjustment | No |
Dimensions, Weight & Design
7
| Specification | Value |
|---|---|
| Dimensions With Stand | 813.26 × 392.77 × 237.44 mm |
| Dimensions Without Stand | 813.26 × 359.05 × 57.5 mm |
| Weight With Stand | 11.44 kg (25.22 lbs) |
| Weight Without Stand | 7.72 kg (17.02 lbs) |
| Stand Width | 357.7 mm (14.08 in) |
| Stand Depth | 237.44 mm (9.35 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 |
| Average Power Consumption | 31 W |
| Maximum Power Consumption | 198 W |
| Sleep Consumption | 0.3 W |
| Off Consumption | 0.3 W |
| Annual Energy Consumption | 86.06 kWh |
| 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
3
| Specification | Value |
|---|---|
| Flicker-Free | Yes |
| Low Blue Light | Yes |
| Additional Monitor Features | ComfortView; Dell Display Manager; KVM Switch; Picture-by-Picture; Picture-in-Picture |
Certifications, Standards & Licenses
5
| Specification | Value |
|---|---|
| Energy Star | Yes |
| EPEAT | EPEAT Gold |
| TÜV Flicker-Free | TUV Rheinland Flicker Free Certified |
| TÜV Low Blue Light | TUV Rheinland Low Blue Light Certified |
| RoHS | Yes |
Included Accessories
3
| Specification | Value |
|---|---|
| HDMI Cable | Yes |
| DisplayPort Cable | Yes |
| USB Type-A to Type-B Cable | Yes |
Frequently Asked Questions
01 Is 76 Hz better than 60 Hz in daily use? +
Slightly. Scrolling and window movement look a little smoother, but it is nothing like the jump to 120 Hz. Treat it as a bonus rather than a reason to buy.
02 What is AH-IPS? +
LG Display's IPS variant, tuned for colour consistency and viewing angles. On a 34-inch curved panel that matters, because you are viewing the edges at an angle - colour shift would be obvious on a lesser panel type.
03 Does the USB-C port charge a laptop? +
No. It is listed as data only at 10 Gbps, so it drives the hub and KVM but not power. You will still need your laptop's own charger.
04 Should a work monitor have HDR anyway? +
Because Dell did not certify it, which is honest at 350 cd/m2. Many rivals would have added a DisplayHDR 400 badge that changes nothing. This is a work monitor and the spec sheet reflects that.
05 How does the KVM compare with the U4025QW? +
The U4025QW has Auto KVM that switches by itself and a much larger 5120 x 2160 panel. This one has a manual KVM on a smaller, cheaper 3440 x 1440 screen - same idea, less automation.
Reviews
DISPLAYINPUT · INDEPENDENT · SPEC-BASED · NO SPONSORED PLACEMENT
SHEET № U3423WE