Dell U4025QW vs U5226KW: Which Monitor Is Better?

Tested using Methodology v2.1.1

Updated Feb 06, 2026 06:46 PM

This review is in Early access

Max Refresh Rate 120 Hz

Size 40"

Panel Type IPS

Native Resolution 5120 x 2160

Max Refresh Rate Lock Hz

Size Lock"

Panel Type Locked

Native Resolution Locked

Recommended in 8 articles:
Office
Ultrawide
Curved
5

Our Verdict

Dell U4025QW

Dell U5226KW

Full comparison details regarding individual product score sets can be found in the section below

Variants

U4025QW (40")

U5226KW (52")

Review

See Dell U4025QW Review

See Dell U5226KW Review

Check Price

40"

U4025QW

52"

U5226KW

40"

U4025QW

52"

U5226KW

40"

U4025QW

52"

U5226KW

40"

U4025QW

52"

U5226KW

40"

U4025QW

52"

U5226KW

Main Differences for

PC Gaming

Threshold

0.10

PC Gaming

6.3

0.0

No major differences between these monitors for pc gaming. See full list of tests below.

Full Comparison

PC Gaming

6.3

0.0

Console Gaming

5.8

0.0

Office

8.1

0.0

Editing

8.0

0.0

Brightness

7.7

0.0

Response Time

3.9

0.0

HDR Picture

6.2

0.0

SDR Picture

7.5

0.0

Color Accuracy

8.9

0.0

Design

Style

Design Picture

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Curved

Yes

Locked

Curve Radius

2500R

Locked

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Build Quality

8.0

N/A

Build Quality Picture

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Ergonomics

7.7

N/A

Ergonomics Picture

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Back Picture

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Height Adjustment

5.9" (15.0 cm)

Lock" (Lock cm)

Min Height To Top Of Panel

18.5" (46.9 cm)

Lock" (Lock cm)

Tilt Range

-20° to 5°

Locked

Rotate Portrait/Landscape

Locked

Swivel Range

-30° to 30°

Locked

Wall Mount

VESA 100x100

Locked

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Stand

Stand Picture

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Thickness Picture

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Base Width

15.4" (39.0 cm)

Lock" (Lock cm)

Base Depth

10.0" (25.5 cm)

Lock" (Lock cm)

Thickness (With Display)

8.1" (20.5 cm)

Lock" (Lock cm)

Weight (With Display)

25.8 lbs (11.7 kg)

Lock lbs (Lock kg)

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Display

Display Picture

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Size

40"

Lock"

Housing Width

37.8" (96.1 cm)

Lock" (Lock cm)

Housing Height

16.5" (41.9 cm)

Lock" (Lock cm)

Thickness (Without Stand)

4.1" (10.5 cm)

Lock" (Lock cm)

Weight (Without Stand)

18.5 lbs (8.4 kg)

Lock lbs (Lock kg)

Borders Size (Bezels)

0.4" (1.0 cm)

Lock" (Lock cm)

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Controls

Controls Picture

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In The Box

In The Box Picture

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Power Supply

Internal

Locked

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Picture Quality

Contrast

7.1

N/A

Checkerboard Picture

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Native Contrast

1,918 : 1

Lock : 1

Contrast With Local Dimming

2,011 : 1

N/A

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Local Dimming

2.0

N/A

Local Dimming Video

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Local Dimming

Yes

Locked

Backlight

Edge

Locked

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SDR Brightness

7.5

N/A

Real Scene

297 cd/m²

Lock cd/m²

Peak 2% Window

287 cd/m²

Lock cd/m²

Peak 10% Window

289 cd/m²

Lock cd/m²

Peak 25% Window

290 cd/m²

Lock cd/m²

Peak 50% Window

291 cd/m²

Lock cd/m²

Peak 100% Window

290 cd/m²

Lock cd/m²

Sustained 2% Window

287 cd/m²

Lock cd/m²

Sustained 10% Window

288 cd/m²

Lock cd/m²

Sustained 25% Window

290 cd/m²

Lock cd/m²

Sustained 50% Window

290 cd/m²

Lock cd/m²

Sustained 100% Window

290 cd/m²

Lock cd/m²

Automatic Brightness Limiting (ABL)

0.001

Lock

Minimum Brightness

26 cd/m²

Lock cd/m²

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HDR Brightness

7.8

N/A

EOTF

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VESA DisplayHDR Certification

DisplayHDR 600

Locked

Real Scene

619 cd/m²

N/A

Peak 2% Window

559 cd/m²

N/A

Peak 10% Window

588 cd/m²

N/A

Peak 25% Window

591 cd/m²

N/A

Peak 50% Window

597 cd/m²

N/A

Peak 100% Window

601 cd/m²

N/A

Sustained 2% Window

558 cd/m²

N/A

Sustained 10% Window

587 cd/m²

N/A

Sustained 25% Window

590 cd/m²

N/A

Sustained 50% Window

596 cd/m²

N/A

Sustained 100% Window

600 cd/m²

N/A

Automatic Brightness Limiting (ABL)

0.004

N/A

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Gray Uniformity

7.3

N/A

50% Uniformity Picture

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50% Std. Dev.

2.639%

Lock%

50% DSE

0.190%

Lock%

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Black Uniformity

6.7

N/A

Native Black Uniformity Picture

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Native Std. Dev.

1.056%

Lock%

Black Uniformity Picture With Local Dimming

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Std. Dev. w/ L.D.

4.309%

N/A

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Color Accuracy (Pre-Calibration)

9.1

N/A

Pre Calibration Picture

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Pre Gamma Curve Picture

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Pre Color Picture

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Picture Mode

Color Space (sRGB)

Locked

sRGB Gamut Area xy

100.7%

Lock%

White Balance dE (Avg.)

2.20

Lock

Color Temperature (Avg.)

6,650 K

Lock K

Gamma (Avg.)

2.15

Lock

Color dE (Avg.)

1.39

Lock

Contrast Setting

Lock

RGB Settings

Default

Locked

Gamma Setting

No Gamma Setting

Locked

Brightness Setting

Lock

Measured Brightness

211 cd/m²

Lock cd/m²

Brightness Locked

Locked

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Color Accuracy (Post-Calibration)

9.8

N/A

Post Calibration Picture

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Post Gamma Curve Picture

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Post Color Picture

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Picture Mode

Custom Color

Locked

sRGB Gamut Area xy

99.9%

Lock%

White Balance dE (Avg.)

0.61

Lock

Color Temperature (Avg.)

6,524 K

Lock K

Gamma (Avg.)

2.18

Lock

Color dE (Avg.)

0.35

Lock

Contrast Setting

Lock

RGB Settings

Gain (99,96,98), Offset (50,49,50)

Locked

Gamma Setting

No Gamma Setting

Locked

Brightness Setting

Lock

Measured Brightness

101 cd/m²

Lock cd/m²

ICC Profile

Download

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SDR Color Gamut

9.9

N/A

sRGB Color Gamut Picture

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sRGB Coverage xy

99.8%

Lock%

sRGB Picture Mode

Custom Color

Locked

Adobe RGB Color Gamut Picture

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Adobe RGB Coverage xy

95.6%

Lock%

Adobe RGB Picture Mode

Custom Color

Locked

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HDR Color Gamut

9.1

N/A

Wide Color Gamut

Yes

N/A

DCI-P3 Color Gamut Picture

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DCI-P3 Coverage xy

96.3%

N/A

DCI-P3 Picture Mode

DisplayHDR 600

N/A

Rec. 2020 Color Gamut Picture

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Rec. 2020 Coverage xy

77.8%

N/A

Rec. 2020 Picture Mode

DisplayHDR 600

N/A

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HDR Color Volume

8.2

N/A

DCI-P3 Color Volume ITP Picture

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1,000 cd/m² DCI-P3 Coverage ICtCp

68.1%

N/A

DCI-P3 Picture Mode

DisplayHDR 600

N/A

Rec. 2020 Color Volume ITP Picture

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10,000 cd/m² Rec. 2020 Coverage ICtCp

38.1%

N/A

Rec. 2020 Picture Mode

DisplayHDR 600

N/A

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Viewing Angle

7.6

N/A

Viewing Angle Video

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Chroma Graph

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Color Washout From Left

36°

Lock°

Color Washout From Right

33°

Lock°

Hue Graph

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Color Shift From Left

45°

Lock°

Color Shift From Right

47°

Lock°

Lightness Graph

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Brightness Loss From Left

42°

Lock°

Brightness Loss From Right

39°

Lock°

Black Level Raise From Left

70°

Lock°

Black Level Raise From Right

70°

Lock°

Gamma Shift From Left

45°

Lock°

Gamma Shift From Right

43°

Lock°

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Text Clarity

9.0

N/A

ClearType On

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ClearType Off

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Panel Type

IPS

Locked

Pixels

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Subpixel Layout

RGB

Locked

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Direct Reflections

6.6

N/A

Ring Light Picture

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Direct Reflections Graph

Preview Graph

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Peak Direct Reflection Intensity

29.6%

Lock%

Screen Finish

Matte

Locked

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Ambient Black Level Raise

8.8

N/A

Black Level Raise Picture

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Ambient Black Level Raise Graph

Preview Graph

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Black Luminance @ 0 lx

0.11 cd/m²

Lock cd/m²

Black Luminance @ 1000 lx

0.51 cd/m²

Lock cd/m²

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Total Reflected Light

0.5

N/A

Bright Room Off Picture

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Total Reflection Ring Light Picture

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Total Reflected Light Intensity

82,703% ⋅ pixel

Lock% ⋅ pixel

Diffraction Artifacts

Locked

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Gradient

9.8

N/A

Gradient Picture

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Color Depth

10 Bit

Lock Bit

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Motion

Refresh Rate

7.1

N/A

Native Refresh Rate

120 Hz

Lock Hz

Max Refresh Rate

120 Hz

Lock Hz

Max Refresh Rate Over DP

120 Hz

Lock Hz

Max Refresh Rate Over HDMI

120 Hz

Lock Hz

Max Refresh Rate Over DP @ 10-bit

120 Hz

Lock Hz

Max Refresh Rate Over HDMI @ 10-Bit

120 Hz

Lock Hz

DSC Toggle

Locked

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

Locked

FreeSync

Compatible (Tested)

Locked

G-SYNC

Compatible (Tested)

Locked

VRR Maximum

120 Hz

Lock Hz

VRR Minimum

< 20 Hz

Locked

VRR Supported Connectors

DisplayPort, HDMI

Locked

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VRR Motion Performance

5.2

N/A

Pursuit Photo VRR

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OD Mode CAD Comparison

Preview Graph

SAMPLE

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Recommended VRR OD Setting

Normal

Locked

Variable Overdrive Advertised

Locked

Avg. CAD

371

Lock

Best CAD

342

Lock

Worst CAD

430

Lock

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Refresh Rate Compliance

0.8

N/A

Fast GTG Sequence

Preview Graph

SAMPLE

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VRR Compliance

Preview Graph

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Compliance @ Max Hz

29%

Lock%

Compliance @ 120 FPS

29%

Lock%

Compliance @ 60 FPS

49%

Lock%

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CAD @ Max Refresh Rate

4.9

N/A

Pursuit Photo At Max Refresh

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CAD Heatmap At Max Refresh

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OD Transition Max Refresh Rate

OD fast

0 to 31

Cycle through frames

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Recommended Overdrive Setting

Normal

Locked

Avg. CAD

358

Lock

Best 10% CAD

218

Lock

Worst 10% CAD

595

Lock

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Response Time @ Max Refresh Rate

First Response Time

16.3 ms

Lock ms

Total Response Time

16.3 ms

Lock ms

Recommended Overdrive Setting

Normal

Locked

RGB Overshoot

0 RGB

Lock RGB

Worst 10% RGB Overshoot

0 RGB

Lock RGB

Worst 10% First Response Time

26.8 ms

Lock ms

Worst 10% Total Response Time

26.8 ms

Lock ms

Heatmap First Response

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Heatmap Total Response

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Heatmap RGB Overshoot

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CAD @ 120Hz

4.9

N/A

Pursuit Photo 120Hz

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CAD Heatmap 120Hz

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OD Transition 120Hz

OD fast

0 to 31

Cycle through frames

Get Insider Accessfor multiple image controls

Recommended Overdrive Setting

Normal

Locked

Avg. CAD

358

Lock

Best 10% CAD

218

Lock

Worst 10% CAD

595

Lock

Show Text

Response Time @ 120Hz

Worst 10% First Response Time

26.8 ms

Lock ms

RGB Overshoot

0 RGB

Lock RGB

Total Response Time

16.3 ms

Lock ms

First Response Time

16.3 ms

Lock ms

Recommended Overdrive Setting

Normal

Locked

Worst 10% Total Response Time

26.8 ms

Lock ms

Worst 10% RGB Overshoot

0 RGB

Lock RGB

120Hz First Response Heatmap

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120Hz Total Response Heatmap

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120Hz Heatmap RGB Overshoot

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Show Text

CAD @ 60Hz

4.6

N/A

Pursuit Photo 60Hz

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CAD Heatmap 60Hz

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OD Transition 60Hz

OD fast

0 to 31

Cycle through frames

Get Insider Accessfor multiple image controls

Recommended Overdrive Setting

Normal VRR Off

Locked

Avg. CAD

397

Lock

Best 10% CAD

248

Lock

Worst 10% CAD

578

Lock

Show Text

Response Time @ 60Hz

Recommended Overdrive Setting

Normal VRR Off

Locked

First Response Time

11.9 ms

Lock ms

Total Response Time

19.5 ms

Lock ms

RGB Overshoot

6 RGB

Lock RGB

Worst 10% Total Response Time

29.1 ms

Lock ms

Worst 10% First Response Time

19.1 ms

Lock ms

Worst 10% RGB Overshoot

16 RGB

Lock RGB

60Hz First Response Heatmap

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60Hz Total Response Heatmap

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60Hz RGB Overshoot Heatmap

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Show Text

Backlight Strobing (BFI)

Backlight Strobing Picture

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Backlight Strobing Frequency Picture

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Backlight Strobing (BFI)

No BFI

Locked

Maximum Frequency

N/A

Minimum Frequency

N/A

Longest Pulse Width Brightness

N/A

Shortest Pulse Width Brightness

N/A

Pulse Width Control

No BFI

Locked

Pulse Phase Control

No BFI

Locked

Pulse Amplitude Control

No BFI

Locked

VRR At The Same Time

No BFI

Locked

Show Text

VRR Flicker

9.2

N/A

VRR Flicker Video

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VRR Flicker Graph

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Dark Gray Flicker

0.4 RGB

Lock RGB

Middle Gray Flicker

1.1 RGB

Lock RGB

Light Gray Flicker

1.6 RGB

Lock RGB

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Image Flicker

N/A

Backlight Picture

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Flicker-Free

Yes

Locked

PWM Dimming Frequency

0 Hz

Locked

Show Text

Inputs

Input Lag

8.8

N/A

Native Resolution @ Max Hz

4.7 ms

Lock ms

Native Resolution @ 120Hz

4.7 ms

Lock ms

Native Resolution @ 60Hz

8.8 ms

Lock ms

Backlight Strobing (BFI)

N/A

Show Text

Resolution

8.6

N/A

Native Resolution

5120 x 2160

Locked

Aspect Ratio

21:9

Locked

Megapixels

11.1 MP

Lock MP

Pixel Density

140 PPI

Lock PPI

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PS5 Compatibility

4.5

N/A

PS5 Compatibility Photo

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PS5 Compatibility Table

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4k @ 120Hz

Locked

4k @ 60Hz

Yes

Locked

1440p @ 120Hz

Locked

1440p @ 60Hz

Yes

Locked

1080p @ 120Hz

Locked

1080p @ 60Hz

Yes

Locked

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Xbox Series X|S Compatibility

4.5

N/A

XSX Compatibility Photo

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XSX Compatibility Table

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4k @ 120Hz

Locked

4k @ 60Hz

Yes

Locked

1440p @ 120Hz

Locked

1440p @ 60Hz

Yes

Locked

1080p @ 120Hz

Locked

1080p @ 60Hz

Yes

Locked

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Inputs

Inputs 1

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Inputs 2

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DisplayPort

1 (DP 1.4)

Locked

DisplayPort Transmission Bandwidth

No DisplayPort 2.1

Locked

Mini DisplayPort

Locked

HDMI

1 (HDMI 2.1)

Locked

HDMI 2.1 Bandwidth

48Gbps (FRL 12x4)

Locked

Daisy Chaining

Thunderbolt

Locked

3.5mm Audio Out

Yes

Locked

Ethernet

Yes

Locked

HDR10

Yes

Locked

Dolby Vision

Locked

Show Text

USB

USB-A Ports

Locked

USB-A Rated Speed

10Gbps (USB 3.2 Gen 2)

Locked

USB-B Upstream Port

Locked

USB-C Ports

Locked

USB-C Upstream

Yes

Locked

USB-C Rated Speed

10Gbps (USB 3.2 Gen 2)

Locked

USB-C Power Delivery

140W

Locked

USB-C DisplayPort Alt Mode

Yes

Locked

Thunderbolt

Thunderbolt 4

Locked

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macOS Compatibility

macOS Screenshot

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Features

Additional Features

Speakers

Yes

Locked

RGB Illumination

Locked

Multiple Input Display

PIP + PBP

Locked

KVM Switch

Yes

Locked

Smart OS

Locked

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On-Screen Display (OSD)

OSD Picture

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Check Price

40"

U4025QW

52"

U5226KW

40"

U4025QW

52"

U5226KW

40"

U4025QW

52"

U5226KW

40"

U4025QW

52"

U5226KW

40"

U4025QW

52"

U5226KW