Display
39.7 in, IPS, 5120 x 2160 pixels
39.7
Refresh Rate
48 Hz - 120 Hz
48 Hz
Brightness
450 cd/m²
450 cd
Contrast Ratio
2000 : 1
2000
Overview
Built around an IPS panel, the Dell U4025QW runs at 5120 x 2160 pixels with a 48 Hz - 120 Hz refresh range. Motion handling is rated at 5 ms GtG. Colour and light output come in at 450 cd/m² typical brightness, 2000 : 1 contrast and 100% sRGB coverage. Ports include 1x HDMI 2.1, 1x DisplayPort 1.4, 4x USB-A, 1x USB-B upstream. Independent research on this model adds one useful note: Panel type CORRECTION: IPS Black technology (LG-developed), NOT standard IPS — higher native contrast than typical IPS.
BrandDellPanel TypeIPSResolution5120 x 2160 pixelsRefresh Rate48 Hz - 120 Hz
Key Highlights
- Dell U4025QW speed | 48 Hz - 120 Hz refresh with 5 ms GtG response
- Dell U4025QW hub | 1 USB-B upstream and 4 USB-A downstream ports
- Dell U4025QW image | 450 cd/m² brightness and 2000 : 1 contrast
Who Should Buy the Dell U4025QW
+ Best For
Two-machine desks
Auto KVM moves keyboard and mouse between systems on its own
Developers and editors
5120 x 2160 fits a timeline or an IDE plus reference side by side
Multi-window work
one panel replaces a dual-monitor setup with no bezel in the middle
Bright offices
450 cd/m2 typical with an ambient light sensor
× Not Ideal For
Gamers
120 Hz with a 5 ms response and no gaming VRR features
Small desks
it is 946 mm wide and 12.22 kg with the stand
Portrait use
there is no pivot, which is expected at this size
Dark-room film
2000:1 IPS contrast lifts blacks compared with OLED
Display Performance
Refresh Rate
48 Hz - 120 Hz
Standard refresh range
Response Time
5 ms GtG
Manufacturer-published transition time
Brightness
450 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
HDR
DisplayHDR 600
Peak brightness and local dimming not separately published
Gaming Performance
Refresh Rate48 Hz - 120 HzMatch frame rate to the monitor’s useful range
Response Time5 ms (GtG)Published claim without independent testing
GPU Requirement5120 x 2160 pixels up to 120 HzEntry-to-mid-range GPU is generally sufficient
HDR & Brightness Reality
DisplayHDR 600 here is real rather than decorative: the panel already runs at 450 cd/m2 for normal work and peaks at 600, so switching an HDR film on does brighten highlights noticeably. The honest ceiling is contrast - at 2000:1 with a W-LED backlight, dark scenes will not reach the black depth of an OLED, and there is no zone count published for local dimming. For HDR video review on a work machine it is perfectly good; for grading HDR or watching films in a dark room, an OLED will look different in kind, not just degree.
Connectivity & Ports
HDMI1x HDMI 2.1Published port count and version
DisplayPort1x DisplayPort 1.4Primary high-refresh PC connection
USB-CNot publishedNo one-cable laptop or charging function
USB Hub1x USB-B upstream / 4x USB-A downstreamPeripherals can run through the screen
Audio Out3.5 mm audio outExternal audio may still be preferred
Desk Fit & Ergonomics
Size / Footprint946.6 × 457.8 × 248 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
Auto KVM moves keyboard and mouse between a laptop and a desktop automatically
5120 x 2160 puts a full timeline and preview on one screen
two full-width windows side by side with no bezel between them
the extra horizontal pixels show far more columns than a 16:9 panel
Pros & Cons
Pros
- 48 Hz 120 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
- 5 ms response and no gaming VRR not a gaming monitor
- 946 mm wide and 12.22 kg it needs a large desk
- 2000:1 contrast lifts blacks in dark scenes
- No pivot (expected at this size, but worth knowing)
Score & Ratings
8.6/10
Great
Model Information
8
| Specification | Value |
|---|---|
| Brand | Dell |
| Series | UltraSharp |
| Model | U4025QW |
| Model Alias | UltraSharp U4025QW |
| Full Product Name | Dell U4025QW |
| Model Year | 2024 |
| Available Colors | Black and Silver |
| Warranty | 3-Year Advanced Exchange Service (5-yr ProSupport upgrade available) |
Display & Panel
11
| Specification | Value | What It Means |
|---|---|---|
| Screen Size | 39.7 in | |
| Exact Diagonal | 1008.59 mm (39.71 in) | |
| Radius of Curvature | 2500R | |
| Aspect Ratio | 2.37:1 | |
| Active Display Width | 929.28 mm (36.59 in) | |
| Active Display Height | 392.04 mm (15.43 in) | |
| Screen-to-Body Ratio | 91.83% | |
| Panel Type | IPS | 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 | 5120 x 2160 pixels | |
| Pixel Density | 140 ppi | 140 ppi indicates how much scaling may be needed in the operating system for comfortable reading. |
| Pixel Pitch | 0.182 mm (0.01 in) |
Picture Quality & Color
10
| Specification | Value | What It Means |
|---|---|---|
| Panel Bit Depth | 10 bits | |
| FRC | Yes | |
| Display Colors | 1073.7 million colors (30 bits) | |
| Typical Brightness | 450 cd/m² | |
| Static Contrast Ratio | 2000 : 1 | |
| Horizontal Viewing Angle | 178 ° | |
| Vertical Viewing Angle | 178 ° | |
| HDR Support | Yes | |
| 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 | 99% |
Refresh Rate, Response & Gaming
3
| Specification | Value |
|---|---|
| Refresh Rate Range | 48 Hz - 120 Hz |
| Minimum Response Time | 5 ms |
| Adaptive-Sync | Yes |
Ports & Connectivity
12
| Specification | Value |
|---|---|
| HDMI Ports | 1 |
| HDMI Version | 2.1 |
| HDMI FRL | Yes |
| DisplayPort Input | 1 |
| DisplayPort Version | 1.4 |
| USB-C Video Input | 1× USB-C |
| DisplayPort Alt Mode | Yes |
| HDCP Support | Yes |
| HDCP Version | 2.2 |
| USB-A Ports | 4 |
| USB-B Upstream | 1 |
| Audio Output | Yes |
Audio, Camera, Network & Smart Features
4
| Specification | Value |
|---|---|
| Built-In Speakers | Yes |
| Speaker Configuration | 2 x 9 W |
| Total Speaker Output | 18 W |
| Built-In Camera | No |
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 | 946.6 × 457.8 × 248 mm |
| Dimensions Without Stand | 946.6 × 419.1 × 59.6 mm |
| Weight With Stand | 12.22 kg (26.94 lbs) |
| Weight Without Stand | 8.35 kg (18.41 lbs) |
| Stand Width | 385 mm (15.16 in) |
| Stand Depth | 247 mm (9.72 in) |
| Security Lock Slot | Yes |
Power & Operating Conditions
12
| 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 |
| Sleep Consumption | 0.5 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 | Ambient Light Sensor; Auto KVM; Dell Display Manager; IPS Black; Network KVM; OSD joystick; Picture-by-Picture; Picture-in-Picture |
Certifications, Standards & Licenses
4
| Specification | Value |
|---|---|
| Energy Star | Yes |
| EPEAT | EPEAT Gold |
| VESA DisplayHDR | DisplayHDR 600 |
| 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 What GPU do I need for 5120 x 2160? +
For desk work, almost anything modern with DisplayPort will drive it at 120 Hz. For gaming it is a different story - that is roughly 40% more pixels than 4K, so you would want a high-end card, and even then the 5 ms response holds it back.
02 Is the curve distracting for text work? +
The 2500R curve is gentle - much flatter than a 1800R gaming ultrawide. On a screen 946 mm wide it mainly keeps the far edges from angling away from you. Straight lines stay convincing enough for design work.
03 How does Auto KVM work? +
You connect two machines and one set of peripherals to the monitor. It then switches keyboard and mouse to whichever input you are viewing, automatically. It is the main reason to pick this over a plain ultrawide.
04 Does it replace two monitors? +
For most people, yes. 5120 x 2160 is effectively two 2560 x 2160 windows side by side, with no bezel in the middle. The catch is that you cannot angle half of it separately.
05 Are the speakers good enough for calls? +
✓ Yes. Two 9 W drivers, 18 W total, is well above the usual monitor speakers - fine for meetings and background audio, though not for music you care about.
Reviews
DISPLAYINPUT · INDEPENDENT · SPEC-BASED · NO SPONSORED PLACEMENT
SHEET № U4025QW