Preferred monitor store
Reviewed on Jan 25, 2019 , Eric Bousquet, Yannick Khong

Dell U4919DW
MONITOR REVIEW

Usage Ratings - Version 1.0

Test Benches:

  • 1.0: Fall 2017
7.5
Mixed Usage
Score components:
Size : 49 "
Resolution : 5120x1440
Refresh Rate : 60 Hz
LCD Type
What it is: Type of LCD technology used by the monitor.
When it matters: Different technologies have different viewing angle properties.
:
IPS
Variable Refresh Rate
What it is: Feature that allows the monitor to synchronize its refresh rate with the input device's output and reduces stuttering and screen tearing.
When it matters: Almost every usage, but is most noticeable in gaming where constant fluctuation in framerate cause distracting artifacts.
:
No

The Dell Ultrasharp U4919DW is a good 49" IPS monitor with wide viewing angles, and an excellent Dual QHD resolution. The high native resolution is excellent for multitasking, and offers a more immersive gaming experience, and like many Dell monitors, it has great accuracy out of the box. Unfortunately, it is limited to a 60 Hz refresh rate, and it doesn't look as good in a dark room. When displaying non-native resolutions, the input lag is very high, which is disappointing.

Test Results
Design 7.5
Picture Quality 7.0
Motion 7.1
Inputs 8.9
Pros
  • Lots of screen real-estate, great for multitasking
  • Image remains accurate when viewed at an angle
  • Excellent out of the box accuracy
Cons
  • High non-native input lag
  • Mediocre dark room performance

Check Price

7.5

Design

Score components: Subjectively assigned
Dell U4919DW Design Picture
Curved : Yes
Curve radius : 3800R
Weight (without stand)
What it is: The weight of the monitor when mounted. This is with the stand removed, and if necessary any VESA mounting bracket attached.
When it matters: When choosing a mount for a monitor/
:
24.7 lbs (11.2 kg)
Weight (with stand)
What it is: The weight of the monitor including the stand any any input covers.
:
36.8 lbs (16.7 kg)

The design of the Dell Ultrasharp 49 is very similar to the Dell U3818DW, but with a wide aspect ratio. The stand is solid and supports the monitor well, and it has a good height and tilt adjustment, but it can't swivel. Like most Dell monitors, the U4919DW has great build quality and shouldn't cause any issues. The overall design is very clean and professional, and looks great in any setting.

Stand
Dell U4919DW Stand picture
Width
What it is: The width of the stand.
When it matters: When using a small desk, for those who require a monitor with a small footprint.
:
15.0" (38.1 cm)
Depth
What it is: The depth of the stand.
When it matters: When using a small desk, for those who require a monitor with a small footprint.
:
13.8" (35.1 cm)

The stand is well built, solid, and doesn't take up too much space. It is quite thin, so you can still place small objects on it. Given the size of the monitor, it still wobbles a bit, but this isn't too distracting.

4.2 Ergonomics
What it is: How much the position of the screen can be adjusted to match the viewing preference of the user.
When it matters: All usages, but especially office and gaming use.
Score components:
  • 46% Height Adjustment
  • 18% Switch portrait/landscape
  • 18% Swivel Range
  • 18% Tilt Range
Dell U4919DW Ergonomics picture
Height Adjustment
What it is: The amount of vertical travel or adjustment of the display.
:
3.6" (9.1 cm)
Switch portrait/landscape : No
Swivel Range : N/A
Tilt Range : -20° to 5°

The U4919DW has a mediocre height adjustment, but a great tilt range, so it is easy to place it in a comfortable viewing position. Unfortunately, it doesn't swivel, and naturally it can't rotate to a portrait orientation.

Back
Dell U4919DW Back picture
Wall Mount : VESA 100x100

Like the majority of Dell monitors, the back is plain, with no extra design flair, and no bias lighting feature. There is only basic cable management, but it is good enough to keep your desk free from cable clutter.

Borders
Dell U4919DW Borders picture
Borders
What it is: The distance from the left edge of the display to the start of the image.
When it matters: When using multiple monitors side-by-side.
:
0.4" (1.0 cm)

The borders are quite thin compared to the overall size of the monitor, and there is no noticeable gap between the borders and the first pixels.

Thickness
Dell U4919DW Thickness picture
Thickness (with stand)
What it is: How far the front of the screen protrudes when placed as far back as possible against a wall.
When it matters: When the monitor is placed back against a wall.
:
8.1" (20.6 cm)
Thickness (without stand)
What it is: How far the front of the screen protrudes when the stand has been removed. For monitors which require a bracket to VESA mount this measurement includes the thickness of the bracket.
When it matters: When mounting a monitor with the stand removed.
:
4.1" (10.4 cm)

Due to the large size and gentle curve, the U4919DW is quite thick. The stand leans back a bit, but the base can still be placed flush with the wall behind it.

8.0 Build Quality
What it is: How well built and sturdy the monitor is, and how good the materials used to build it are.
When it matters: All usages.
Score components: Subjectively assigned
Dell U4919DW Build Quality picture

The Dell U4919DW has great build quality, very similar to the Dell U3818DW. The stand is very solid and well built, and you shouldn't have any issues with it.

The Dell Ultrasharp U4919DW delivers decent overall picture quality, similar to the Samsung CHG90 and Dell U3818DW. Like the Dell U3818DW, it has mediocre native contrast and disappointing black uniformity. It is brighter than the U3818DW, but has a slightly worse color gamut, and slightly worse viewing angles. Out of the box, the monitor has great accuracy, and the few minor imperfections are easily corrected with a few changes.

6.3 Contrast
What it is: Brightness difference between white and black. This is the main component of picture quality.
When it matters: Always, but especially when watching dark scenes.
Score components:
Dell U4919DW Checkerboard Picture
Native Contrast
What it is: Ratio of the white brightness divided by the blacks measured on our checkerboard test pattern with a white target of 100 cd/m².
When it matters: Dark scenes in a dark room.
Good value: > 3,000
Noticeable difference: 500
:
1184 : 1
Contrast with local dimming
What it is: Ratio of the white brightness divided by the blacks measured on our checkerboard test pattern with local dimming turned on (maximum) with a white target of 100 cd/m².
When it matters: Dark scenes in a dark room.
Good value: > 3,000
Noticeable difference: 500
:
N/A

The Dell U4919DW has a mediocre native contrast ratio, much worse than the CHG90. Blacks look gray in a dark room, similar to the U3818DW. There is a uniformity feature that can be enabled to improve overall screen uniformity; when activated, the contrast ratio drops to 690:1. Unfortunately, there is no local dimming feature to improve the contrast ratio.

0 Local Dimming
What it is: The lights behind the LCD layer adapt to the picture displayed, improving the contrast ratio.
When it matters: Dark scenes viewed in a dark room.
Score components: Subjectively assigned
Local Dimming
What it is: Whether it has a feature that controls the LEDs behind the LCD layer, to match the picture and darkens the dark portion of it.
When it matters: On LED TVs only. Dark scenes viewed in a dark room.
:
No
Backlight
What it is: Configuration of the lights of the backlight.
When it matters: Effectiveness of the local dimming.
Good value: Full-array/direct lighting is better for local dimming. As for the uniformity of the screen, it depends on the implementation. Some edge-lit monitors have more uniform blacks than some full-array monitors.
:
Edge

There is no local dimming feature on this monitor. The video is for reference only.

7.9 SDR Peak Brightness
What it is: How bright the screen can get. Measured with local dimming and with SDR content.
When it matters: Bright living rooms; bright objects; SDR content.
SDR Real Scene
What it is: The maximum luminosity the TV can obtain while playing a movie or while watching a TV show. Our Real Scene was selected to represent a more regular movie condition. All measurements are made with the TV set to be as bright as possible, but with a 6500k white. Measured with local dimming on, max backlight and with an SDR signal. Scene: here.
When it matters: When watching movies and TV shows in SDR.
:
338 cd/m²
SDR Peak 2% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 2% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright highlights, present on screen for a short time
:
352 cd/m²
SDR Peak 10% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 10% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright objects, present on screen for a short time
:
353 cd/m²
SDR Peak 25% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 25% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
:
353 cd/m²
SDR Peak 50% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 50% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
:
354 cd/m²
SDR Peak 100% Window
What it is: The maximum luminosity, even if only maintained for a short time, of a white square covering 100% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
:
354 cd/m²
SDR Sustained 2% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 2% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright highlights, persistent during a scene.
:
351 cd/m²
SDR Sustained 10% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 10% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: Bright objects, persistent during a scene.
:
352 cd/m²
SDR Sustained 25% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 25% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
:
353 cd/m²
SDR Sustained 50% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 50% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
:
353 cd/m²
SDR Sustained 100% Window
What it is: The lowest maximum luminosity (usually after it has stabilized) of a white square covering 100% of the screen, with the monitor set to be as bright as possible. Measured with local dimming and over SDR signal.
When it matters: When watching in a bright room.
:
353 cd/m²
SDR ABL
What it is: The standard deviation of the SDR sustained brightness, after linearizing for noticeable differences in luminosity
When it matters: Content with large bright areas, such as for PC or video game use, and sports such as hockey
:
0.000

Great peak brightness in SDR, brighter than the U3818DW. There should be no issues using the U4919DW in a bright office. When the uniformity feature is activated, the peak brightness decreases significantly.

0 HDR Peak Brightness
What it is: How bright the screen can get. Measured with local dimming and with HDR content.
When it matters: HDR content
HDR Real Scene : N/A
HDR Peak 2% Window : N/A
HDR Peak 10% Window : N/A
HDR Peak 25% Window : N/A
HDR Peak 50% Window : N/A
HDR Peak 100% Window : N/A
HDR Sustained 2% Window : N/A
HDR Sustained 10% Window : N/A
HDR Sustained 25% Window : N/A
HDR Sustained 50% Window : N/A
HDR Sustained 100% Window : N/A
HDR ABL : N/A

HDR is not supported on this monitor.

7.3 Horizontal Viewing Angle
What it is: Color accuracy when viewed from the side.
Dell U4919DW Horizontal Color Shift Picture
Color Shift from Left
What it is: Angle where the colors noticeable shift compared to when viewed from directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When sharing your monitor with people on your left
Good value: > 50°
Noticeable difference: 10°
:
37 °
Color Shift from Right
What it is: Angle where the colors noticeable shift compared to when viewed from directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When sharing your monitor with people on your right
Good value: > 50°
Noticeable difference: 10°
:
39 °
Dell U4919DW Horizontal Brightness Picture
Brightness from Left
What it is: Angle where the brightness drops to 50% of the brightness directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When sharing your monitor with people on your left.
Good value: > 50°
Noticeable difference: 10°
:
46 °
Brightness from Right
What it is: Angle where the brightness drops to 50% of the brightness directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When sharing your monitor with people on your right.
Good value: > 50°
Noticeable difference: 10°
:
47 °
Dell U4919DW Horizontal Black Level Picture
Black Level from Left
What it is: Angle where the black level drops to 50% of the black level directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When sharing your monitor with people on your right.
Good value: > 50°
Noticeable difference: 10°
:
75 °
Black Level from Right
What it is: Angle where the black level drops to 50% of the black level directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When sharing your monitor with people on your right.
Good value: > 50°
Noticeable difference: 10°
:
75 °
Curve Radius : 3800 R

Like most IPS monitors, the Dell U4919DW has decent horizontal viewing angles. When sharing something with someone sitting off-center, the image appears dimmer, and colors lose accuracy, but the blacks levels remain constant, unlike with VA monitors.

8.0 Vertical Viewing Angle
What it is: Color accuracy when viewed from the top or bottom.
Dell U4919DW Vertical Color Shift Picture
Color Shift from Below
What it is: Angle where the colors noticeable shift compared to when viewed from directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When looking at a monitor from below.
Good value: > 50°
Noticeable difference: 10°
:
27 °
Color Shift from Above
What it is: Angle where the colors noticeable shift compared to when viewed from directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When looking at a monitor when standing up.
Good value: > 50°
Noticeable difference: 10°
:
27 °
Dell U4919DW Vertical Brightness Picture
Brightness from Below
What it is: Angle where the brightness drops to 50% of the brightness directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When looking at a monitor from below.
Good value: > 50°
Noticeable difference: 10°
:
33 °
Brightness from Above
What it is: Angle where the brightness drops to 50% of the brightness directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When looking at a monitor while standing up.
Good value: > 50°
Noticeable difference: 10°
:
33 °
Dell U4919DW Vertical Black Level Picture
Black Level from Below
What it is: Angle where the black level drops to 50% of the black level directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When looking at a monitor from below.
Good value: > 50°
Noticeable difference: 10°
:
75 °
Black Level from Above
What it is: Angle where the black level drops to 50% of the black level directly in front of the monitor. 0 ° means directly facing the monitor. Measurements are up to a maximum of 75 °.
When it matters: When looking at a monitor while standing up.
Good value: > 50°
Noticeable difference: 10°
:
75 °

Great vertical viewing angles. When sharing something on screen with someone standing beside you, the image is only a bit darker, and colors lose some accuracy, but there shouldn't be any issues.

8.4 Gray Uniformity
What it is: Evenness of colors onscreen (not just gray).
When it matters: Solid colors. Sports, panning shots.
Score components:
Dell U4919DW 50% Uniformity Picture
50% Std. Dev.
What it is: Average squared difference of pixels when displaying a mid 50% gray.
When it matters: Solid colors. Sports, panning shots.
Good value: < 2.5%
Noticeable difference: 1%
:
3.628 %
50% DSE
What it is: Dirty Screen Effect. High-frequency variance of uniformity. Dark spots on the screen.
When it matters: Solid colors. Sports, panning shots.
Good value: < 0.165%
Noticeable difference: 0.025%
:
0.123 %
Dell U4919DW 5% Uniformity Picture
5% Std. Dev.
What it is: Average squared difference of pixels when displaying a mid 5% gray.
When it matters: Dark scenes.
Good value: < 1.15%
Noticeable difference: 1%
:
0.414 %
5% DSE
What it is: Dirty Screen Effect. High-frequency variance of uniformity. Dark spots on the screen.
When it matters: Dark scenes.
Good value: < 0.116%
:
0.048 %

The Dell Ultrasharp U4919DW has great gray uniformity, with very little dirty screen effect, which is great. There is a uniformity feature that can be enabled from the monitor's internal menus; we found that it doesn't improve the uniformity much, but causes a significant decrease in native contrast and brightness, so we don't recommend using it.

5.8 Black Uniformity
What it is: Evenness of blacks.
When it matters: Dark scenes viewed in a dark room.
Score components:
Dell U4919DW Native Black Uniformity Picture
Native Std. Dev.
What it is: Average of the squared difference of the blacks.
When it matters: Dark scenes viewed in a dark room.
Good value: <2%
Noticeable difference: 1%, but keep in mind that it varies a lot by unit, even of the same model; yours likely will not end up exactly like ours.
:
2.158 %
Std. Dev. w/ L.D.
What it is: Average of the squared difference of the blacks with Local Dimming enabled
When it matters: Dark scenes viewed in a dark room.
Good value: <2%
Noticeable difference: 1%, but keep in mind that it varies a lot by unit, even of the same model; yours likely will not end up exactly like ours.
:
N/A

The monitor has disappointing black uniformity, similar to the U3818DW. There isn't much noticeable flashlighting, which is good, but there are bright bands across most of the screen.

8.2 Pre Calibration
What it is: Monitor's color accuracy before a full calibration. The measurements are taken with out of the box 'factory setting'.
When it matters: All video on an uncalibrated TV. This represents most people's use cases.
Score components:
Dell U4919DW Pre Calibration Picture Dell U4919DW Pre Gamma Curve Picture Dell U4919DW Pre Color Picture
Picture Mode
What it is: The picture mode that was used to do the pre-calibration reading. We usually go for the picture mode that gives us the more control over all the picture quality setting.
:
Standard
Luminance
What it is: The luminance at which the pre-calibration reading was done. This represents the luminance of the monitor when it is at the factory default settings.
:
306 cd/m²
Luminance Settings
What it is: The luminance settings, often named 'Brightness' on monitors, usually range from 0 to 100.
:
75
Contrast Setting
What it is: The monitor contrast setting, usually ranging from 0 to 100.
:
75
RGB controls
What it is: This is the value for each color (red, green, and blue) used in the monitor internal RGB cuts/gains controls. If the monitor does not have an internal RGB cuts/gains controls, then the color temperature setting will be used instead, and the color temperature that gives us the best result will be used.
:
N/A
Color Temperature
What it is: The color temperature is a measure of the color of light. A colder color temperature (7000K) will look bluer and a warmer color temperature (4000K) will look yellower/redder. 6500K is the standard color for PC monitors and also for the sRGB color standard.
When it matters: When you care about color reproduction and accuracy.
Good value: 6500K
Noticeable difference: 400K
:
6778 K
White Balance dE
What it is: Average inaccuracy of shades of gray.
When it matters: Overall color temperature of all video.
Good value: < 3
Noticeable difference: 1
:
2.66
Color dE
What it is: Average inaccuracy of colors.
When it matters: All colors.
Good value: < 3
Noticeable difference: 1
:
2.02
Gamma
What it is: Brightness of shades of gray.
When it matters: Shadows.
Good value: Between 2.1 and 2.3 (our target is 2.2)
Noticeable difference: 0.1
:
2.26

The monitor has great accuracy out of the box. Both color and white balance dE are low enough that most people won't notice any inaccuracies. Gamma does not completely follow the target sRGB curve, and the color temperature is a bit cool. The 'Standard' Picture Mode is the most accurate out of the box, but does not allow you to adjust the RGB controls.

9.4 Post Calibration
What it is: Monitor's color accuracy after a full calibration with a spectrophotometer.
When it matters: All graphics and video content on a monitor that has been professionally calibrated.
Score components:
Dell U4919DW Post Calibration Picture Dell U4919DW Post Gamma Curve Picture Dell U4919DW Post Color Picture
Picture Mode
What it is: The picture mode that was used to do the calibration reading. We usually go for the picture mode that gives us the more control over all the picture quality setting.
:
Custom Color
Luminance
What it is: The luminance at which the calibration was executed. We aim for a luminance level of 100 cd/m².
:
100 cd/m²
Luminance Settings
What it is: The luminance settings, often named 'Brightness' on monitors, usually range from 0 to 100.
:
19
Contrast Setting
What it is: The monitor contrast setting, usually ranging from 0 to 100.
:
75
RGB Controls
What it is: This is the value for each color (red, green, and blue) used in the monitor internal RGB cuts/gains controls. If the monitor does not have an internal RGB cuts/gains controls, then the color temperature setting will be used instead, and the color temperature that gives us the best result will be used.
:
94-98-100
Color Temperature
What it is: The color temperature is a measure of the color of light. A colder color temperature (7000K) will look bluer and a warmer color temperature (4000K) will look yellower/redder. 6500K is the standard color for PC monitors and also for the sRGB color standard.
When it matters: When you care about color reproduction and accuracy.
Good value: 6500K
Noticeable difference: 400K
:
6431 K
White Balance dE
What it is: Average inaccuracy of shades of gray.
When it matters: Overall color temperature of all videos.
Good value: < 3
Noticeable difference: 1
:
0.98
Color dE
What it is: Average inaccuracy of colors.
When it matters: All colors.
Good value: < 3
Noticeable difference: 1
:
0.78
Gamma
What it is: Brightness of shades of gray.
When it matters: Shadows.
Good value: Between 2.1 and 2.3 (our target is 2.2)
Noticeable difference: 0.1
:
2.17

After calibration, the monitor has excellent accuracy. Any remaining color and white balance inaccuracies can't be seen without specialized equipment, and the color temperature is closer to the calibration target of 6500 K. Gamma follows the target curve almost perfectly.

You can download our ICC profile calibration here. This is provided for reference only and should not be used, as the calibration values vary per individual unit even for the same model due to manufacturing tolerances.

8.6 SDR Color Gamut
What it is: The palette of colors the monitor can display
When it matters: General content consumption or production
Score components:
Dell U4919DW Color Gamut s.RGB Picture
s.RGB xy
What it is: Coverage of the s.RGB colorspace on CIE 1931 xy.
When it matters: Almost all content. Includes websites, standard windows environment and SDR movies
Good value: > 95%
Noticeable difference: 5%
:
96.6 %
Dell U4919DW Color Gamut ARGB Picture
Adobe RGB xy
What it is: Coverage of the Adobe RGB colorspace on CIE 1931 xy.
When it matters: Professional photography.
Good value: > 90%
Noticeable difference: 5%
:
74.7 %

s.RGB Picture Mode: Custom Color (calibrated)
Adobe RGB Picture Mode: Custom Color

Excellent SDR color gamut. The U4919DW covers the s.RGB gamut almost perfectly, but can't reproduce the full range of greens. Coverage of the wider Adobe RGB color space is only decent, which isn't ideal for professional photo editing.

8.8 SDR Color Volume
What it is: How much of the SDR color spaces the monitor can reproduce
When it matters: General usage and SDR media creation
Score components:
Dell U4919DW s.RGB Color Volume ITP picture
s.RGB in ICtCp
What it is: How much of the s.RGB colorspace a monitor can display at different luminosity levels
When it matters: Most content, including web, SDR video games, and SDR media creation
:
95.9 %
Dell U4919DW Adobe RGB Color Volume ITP Picture
Adobe RGB in ICtCp
What it is: How much of the Adobe RGB colorspace a monitor can display at different luminosity levels, normalized to the monitor's peak brightness.
When it matters: Professional media creation
:
79.5 %

s.RGB Picture Mode: Custom Color
Adobe RGB Picture Mode: Custom Color

Excellent SDR color volume. The color volume is limited by the mediocre native contrast ratio, which prevents the monitor from producing dark saturated colors, and by the limited Adobe RGB color gamut.

0 HDR Color Gamut
What it is: The monitor's ability to reproduce HDR color spaces
When it matters: HDR content consumption or media creation
Score components:
Wide Color Gamut
What it is: Whether the monitor can support wider color gamuts
When it matters: HDR content and media creation
:
No
DCI P3 xy
What it is: Coverage of the DCI P3 colorspace on CIE 1931 xy
When it matters: When consuming or producing HDR content.
:
N/A
Rec. 2020 xy
What it is: Coverage of the Rec.2020 colorspace on CIE 1931 xy.
When it matters: When consuming or producing HDR content.
Good value: > 90%
Noticeable difference: 5%
:
N/A

HDR is not supported on this monitor.

0 HDR Color Volume
What it is: How much of the HDR color spaces a monitor can display at different luminosity levels.
When it matters: HDR content consumption and production. Includes streaming services, UHD Blu-rays and HDR games.
Score components:
DCI-P3 in ICtCp
What it is: How much of the DCI-P3 colorspace a monitor can display at different luminosity levels, normalized to the monitor's peak brightness output.
When it matters: HDR content.
Good value: 80%
Noticeable difference: 5%
:
N/A
Rec. 2020 in ICtCp
What it is: How much of the Rec. 2020 colorspace a monitor can display at different luminosity levels, normalized to the monitor's peak brightness output.
When it matters: HDR content.
Good value: 80 %
Noticeable difference: 5 %
:
N/A

HDR is not supported on this monitor.

10 Image Retention
What it is: How much a static image is retained on a monitor screen after a certain amount of time.
When it matters: When working or playing video games on your PC monitor.
Dell U4919DW Image Retention Picture
IR after 0 min recovery
What it is: Image retention measured right after the static image exposure, without recovery time.
When it matters: When changing use or right after changing the type of on screen content (i.e. stopping playing video game to watch a movie).
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0.00 %
IR after 2 min recovery
What it is: Image retention measured after a recovery time of 2 minutes.
When it matters: When changing use or right after changing the type of on screen content (i.e. stopping playing video game to watch a movie).
Good value: 0 is perfect
Noticeable difference: 0.015%
:
0.00 %
IR after 4 min recovery
What it is: Image retention measured after a recovery time of 4 minutes.
When it matters: When changing use or right after changing the type of on screen content (i.e. stopping playing video game to watch a movie).
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0.00 %
IR after 6 min recovery
What it is: Image retention measured after a recovery time of 6 minutes.
When it matters: When changing use or right after changing the type of on screen content (i.e. stopping playing video game to watch a movie).
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0.00 %
IR after 8 min recovery
What it is: Image retention measured after a recovery time of 8 minutes.
When it matters: When changing use or right after changing the type of on screen content (i.e. stopping playing video game to watch a movie).
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0.00 %
IR after 10 min recovery
What it is: Image retention measured after a recovery time of 10 minutes.
When it matters: When changing use or right after changing the type of on screen content (i.e. stopping playing video game to watch a movie).
Good value: 0 is perfect.
Noticeable difference: 0.015%
:
0.00 %

There are no signs of temporary image retention on the U4919DW, even immediately after displaying our high-contrast static test image for 10 minutes.

9.7 Gradient
What it is: How finely levels of color can be displayed.
When it matters: Details in shadows, sky and skin tones. Matters more for HDR content.
Score components: Subjectively assigned
Dell U4919DW Gradient Picture
Color Depth
What it is: Number of bits per pixel to represent a specific color. Note: we consider 8-bit with dithering to be equivalent to 10-bit, as long as the 10-bit gradient looks smooth.
When it matters: HDR content like HDR video games or HDR UHD movies. Won't matter for regular Blu-ray movies, SDR video game or desktop environment content displayed from a Windows PC. Those are limited to 8-bit color.
Good value: 10-bit.
Noticeable difference: 1 bit.
:
10 Bit

Outstanding gradient performance. There is no noticeable banding in most colors, which is great.

10 Color Bleed
What it is: How much the color from one area of the screen affects the color in another area of the screen.
When it matters: All usages, but especially media creation.
Score components:
Dell U4919DW Color bleed horizontal
Pixel row error
What it is: The amount of bleed that appears across the screen horizontally.
When it matters: General usage of a PC monitor, can appear when browsing the web or with media creation like graphics.
Good value: <0.2%
Noticeable difference: 0.1%
:
0.001 %
Dell U4919DW Color bleed vertical
Pixel column error
What it is: Amount of color bleeding that appears across the screen vertically.
When it matters: Most uses of a PC monitor. Can appear while browsing the web or when editing images or graphics.
Good value: <0.2%
Noticeable difference: 0.1%
:
0.002 %

There is no significant color bleed, which is great.

8.0 Reflections
What it is: How much light is reflected by the TV.
When it matters: Bright rooms.
Score components: Subjectively assigned
Dell U4919DW Average room Dell U4919DW Average room off picture Dell U4919DW Bright room off picture

The Dell U4919DW has great reflections handling. The curved screen tends to distort reflections a bit, which can be distracting in some occasions, but overall there shouldn't be any issues.

7.1

Motion

Score components:

The Dell U4919DW has decent motion handling. It has a great response time, with little overshoot and only a minor blur trail. It does not have the motion smearing issues seen on the U3818DW. The backlight is completely flicker-free, which is great. Unfortunately, the standard 60 Hz refresh rate may disappoint some, and it does not support any variable refresh rate technologies like FreeSync or G-SYNC.

8.2 Motion Blur
What it is: The performance of the pixel response time. Poor response time causes trails to follow moving objects. Response time is one of a few sources of motion blur.
When it matters: When there's fast movement on screen, such as during video games and sports.
Score components:
Dell U4919DW Motion Blur Picture Dell U4919DW Response Time Chart
80% Response Time
What it is: How quickly pixels can reach 80% of a full transition from one color to another.
When it matters: When there's fast movement on screen, such as during video games and sports.
Good value: < 8 ms
Noticeable difference: 4 ms
:
5.5 ms
100% Response Time
What it is: How quickly pixels can fully transition from one color to another.
When it matters: When there's fast movement on screen, such as during video games and sports.
Good value: < 20 ms
Noticeable difference: 10 ms
:
16.7 ms
Best Overdrive Setting
What it is: If the monitor has adjustable pixel overdrive settings, which one produces the best response time with minimal overshoot.
When it matters: When adjusting the monitor's settings to get the least possible motion blur.
:
Normal

Response Time Normal
Response Time Fast

The Dell U4919DW has a great response time, and the blur trail behind moving objects is very short. There are two selectable overdrive settings: 'Normal' and 'Fast'. We recommend the 'Normal' setting, as 'Fast' has more overshoot but isn't much faster. In either mode the overshoot is relatively minor, and shouldn't cause any issues. This is much better than the U3818DW, which had noticeable motion smearing.

7.5 Image Flicker
What it is: Luminosity pattern when displaying images
When it matters: Nearly all the time during PC monitor use, but especially during fast movement such as video games
Dell U4919DW Backlight Picture
Flicker-free : Yes
PWM Dimming Frequency
What it is: Flickering pattern at different luminosities.
When it matters: For people sensitive to flickering.
Good value: N/A or high frequencies (> 300 Hz). Frequencies that are multiples of 60Hz are better.
:
0 Hz
Black Frame Insertion (BFI)
What it is: Option to turn screen black between frames
When it matters: Reduces eye tracking blur in motion
Good value: Yes
:
N/A
BFI Maximum Frequency
What it is: Highest possible frequency of flickering pattern
When it matters: Reduces eye-tracking blur in motion
Good value: Matches the native refresh rate
Noticeable difference: 20 Hz
:
N/A
BFI Minimum Frequency
What it is: Lowest possible frequency of flickering pattern
When it matters: Reduces eye-tracking blur in motion
Good value: 60 Hz
Noticeable difference: 20 Hz
:
N/A

The monitor is completely flicker-free at all backlight settings, which is great. Unfortunately, there is no option to introduce flicker in order to reduce persistence blur.

6.7 Refresh Rate
What it is: How frequently the monitor can refresh and show new frames, and whether it can vary its refresh rate in real time using technologies like G-sync and FreeSync.
When it matters: Mostly for gaming, but does provide a little better motion during normal usage.
Native
What it is: The frequency at which the monitor is capable of displaying images every second
When it matters: General usage, but better results are most important for gaming
Good value: >100 Hz
Noticeable difference: 15 Hz
:
60 Hz
Factory Overclock
What it is: The frequency at which the monitor's can be boosted to using its internal menu.
When it matters: Gaming and other usages where high frame rate content is consumed.
Good value: >100
Noticeable difference: 15
:
N/A
Variable Refresh Rate
What it is: Feature that allows the monitor to synchronize its refresh rate with the input device's output and reduces stuttering and screen tearing.
When it matters: Almost every usage, but is most noticeable in gaming where constant fluctuation in framerate cause distracting artifacts.
:
No
G-SYNC Compatible
What it is: We test for FreeSync compatibility with an NVIDIA GTX1060. We check for any excess blur, screen blanking, or excess tearing, and confirm the variable refresh rate range.
When it matters: If you have an NVIDIA graphics card.
Good value: Yes
:
No
VRR Maximum
What it is: The maximum frequency covered by the Variable Refresh Rate feature of the monitor.
When it matters: Any time the VRR feature is enabled.
Good value: Matches Refresh rate
Noticeable difference: 10 Hz
:
N/A
VRR Minimum
What it is: The lowest frequency covered by the monitor's Variable Refresh Rate feature.
When it matters: When using the VRR feature of the monitor at lower frame rates.
Good value: 30 Hz
:
N/A
VRR Maximum With OC
What it is: The maximum frequency covered by the Variable Refresh Rate feature when the monitor's overclocking feature is used.
When it matters: When both the overclocking and VRR features are used.
Good value: Matching the overclocked refresh rate.
Noticeable difference: 10 hz
:
N/A
VRR Supported Connectors : N/A

The Dell U4919DW has a standard 60 Hz refresh rate, with no option for a factory overclock. It also doesn't support any variable refresh rate technology like FreeSync or G-SYNC.

8.9

Inputs

Score components:

The monitor has excellent low input lag when displaying its native resolution. The large screen and excellent Dual QHD resolution are excellent for multitasking, and it has a good assortment of inputs for recent devices, including USB-C with an excellent 90W power delivery mode.

8.7 Input Lag
What it is: Delay between input and onscreen reaction.
When it matters: General usage of the mouse and gaming.
Native Resolution
What it is: Lowest input lag possible at the center of the screen, when the monitor is displaying its native resolution at its native refresh rate.
When it matters: General usage and while playing video games.
Good value: < 15 ms
Noticeable difference: 5 ms
:
9.1 ms
Non-Native Resolution
What it is:

Lowest input lag possible at the center of the screen, when the monitor is displaying an alternative resolution at its native refresh rate. The non-native resolution tested depends on the native resolution of the monitor, following this pattern unless otherwise specified in the Input Lag text:

Native Resolution Non-Native Resolution Tested
4k UHD QHD
QHD FHD
FHD 1600x900
3440x1440 2560x1080
2560x1080 1920x1080
When it matters: General usage as well as gaming.
Good value: < 15 ms
Noticeable difference: 5 ms
:
40.7 ms
Native Resolution @ 60 Hz
What it is: Lowest input lag possible at the center of the screen, when the monitor is displaying its native resolution at a refresh rate of 60 Hz.
When it matters: General usage as well as gaming.
Good value: < 15 ms
Noticeable difference: 5 ms
:
9.1 ms
Variable Refresh Rate
What it is: Lowest input lag possible at the center of the screen, when the monitor is using its Variable Refresh Rate feature at its native resolution.
When it matters: General usage as well as gaming.
Good value: < 15 ms
Noticeable difference: 5 ms
:
N/A
HDR
What it is: Lowest input lag possible at the center of the screen, when the monitor is displaying an HDR signal at its native resolution and refresh rate.
When it matters: General usage as well as gaming.
Good value: < 15 ms
Noticeable difference: 5 ms
:
N/A
Black Frame Insertion (BFI)
What it is: Lowest input lag possible at the center of the screen, when BFI is enabled and the monitor is displaying a signal at the highest supported BFI refresh rate.
When it matters: General usage as well as gaming.
Good value: < 15 ms
Noticeable difference: 5 ms
:
N/A

The Dell U4919DW has excellent low input lag when displaying at its native resolution of 5120x1440. Unfortunately, when the monitor is sent a non-native resolution the input lag is very high.

9.3 Resolution and Size
What it is: The number of pixels the monitor can display, and the surface area of its screen.
When it matters: All usages, but especially for office and media editing.
Score components:
Native Resolution : 5120x1440
Aspect Ratio : 32:9
Megapixels : 7.4 MP
Pixel Density : 109 PPI
Screen Diagonal : 48.8 inches
Screen Area : 623 sq inches

The monitor has an outstanding native resolution of 5120x1440, which is the equivalent of two 1440p monitors placed side-by-side. This provides a huge amount of screen real-estate to work with, and is excellent for multitasking.

We have received multiple reports of Mac users being unable to select the full native resolution on the U4919DW. It appears to be a limitation with some Apple hardware.

Inputs
Total Inputs
DisplayPort : 1 (DP 1.4)
Mini DisplayPort : No
HDMI : 2 (HDMI 2.0)
DVI : No
VGA : No
DisplayPort Out : No
USB : 5 (USB 3.0)
USB C : 1 (USB, USB PD, DP Alt Mode)
Analog Audio Out 3.5mm : No
Microphone In 3.5mm : No
Digital Optical Audio Out : No
Analog Audio Out RCA : No

The Dell Ultrasharp 49 has a good selection of inputs, including two HDMI 2.0 ports, one DP port, and one USB-C port. The USB-C port supports DP Alt Mode, and DP power delivery with a maximum power delivery of 90 W, so you can easily keep your laptop charged while working, with only one cable.

Features

The Dell Ultrasharp 49 has very few additional features. Like the U3818DW, it has a unique set of connections and a picture-by-picture mode that allows you to use the monitor with two computers at once, with only one keyboard and mouse. There is also a Uniformity Compensation mode that is supposed to improve gray uniformity, but in practice doesn't improve uniformity much, and instead reduces the contrast and brightness.

Additional Features
What it is: Additional features found on the monitor
Score components:
Speakers
What it is: Whether or not the monitor features standalone speakers.
When it matters: When using your computer without headphones or a dedicated pair of speakers.
:
No
HDR10 : No

The Dell U4919DW has a few extra features, including:

  • Picture-by-Picture: You can display the input from two sources at once. With the included KVM functionality, this allows you to work on two computers at once, with only one keyboard and mouse.
  • Uniformity Compensation: A factory calibrated mode that is supposed to correct for any uniformity issues. As the U4919DW already has great uniformity, this mode doesn't improve uniformity in any significant way, but causes a reduction in brightness and native contrast.

On-Screen Display (OSD)
Controls
Dell U4919DW Controls picture

Standard Dell control scheme, but the buttons are small and provide very little tactile feedback.

In The Box
Dell U4919DW In The Box picture

  • Manuals
  • HDMI Cable
  • USB-C Cable
  • USB 3.0 Type B Cable
  • DisplayPort Cable

Differences between Sizes and Variants

We tested the 49" U4919DW, which is the only size available, but there are other Dell Ultrasharp monitors, some of which are listed below.

If someone comes across a different type of panel or if their Ultrasharp 49 doesn't correspond to our review, let us know and we will update the review. Note that some tests such as the gray uniformity may vary between individual units.

Model Size Resolution Refresh Rate Notes
U4919DW 49" 5120x1440 60 Hz USB-C
U3417W 34" 3440x1440 60 Hz DisplayPort Out, no USB-C
U3818DW 38" 3840x1600 60 Hz USB-C

The U4919DW we reviewed was manufactured in October 2018.

Compared to other Monitors

Dell U4919DW Group Shot Picture
Left: Dell U3818DW. Middle: Dell U4919DW. Right: Samsung CHG90.
Unlike our other photographs, this picture wasn't taken under a controlled environment, so do not draw conclusions from it.

The Dell U4919DW is an impressive Ultrawide monitor that is great for office use. It doesn't come cheap, but when you consider that it replaces two 1440p monitors it is an interesting model. See our recommendations for the best Ultrawide monitors and the best gaming monitors.

Samsung CHG90

The Samsung CHG90 and the Dell U4919DW each have their own benefits. The CHG90 has a faster refresh rate, and it supports FreeSync VRR, great for gamers. The CHG90 also looks better in a dark room, and it supports HDR. The U4919DW has better wide viewing angles, and a higher native resolution, which is better for multitasking.

Dell U3818DW

The Dell U3818DW and the Dell U4919DW are very similar. The larger screen on the U4919DW is easier for multitasking, and offers a more immersive gaming experience. The U3818DW has a better stand, with a better height adjustment, and it can swivel.

LG 43UD79

The Dell U4919DW is a bit better than the LG 43UD79. The stand on the Dell U4919DW has an adjustable height, and wider tilt range, whereas the LG 43UD79 has a small tilt adjustment and no height adjustment. The Dell is also completely flicker-free and a bit brighter, which is great.

Dell U3417W

The Dell U4919DW is slightly better than the Dell U3417W. The U4919DW has a larger screen and higher native resolution, which is great for multitasking. The U4919DW also has less input lag at the native resolution, and slightly better black uniformity. The U3417W has better ergonomics, thanks to a better height adjustment, and the stand can swivel.

Conclusion
SEE PRICE
Amazon.com

7.5Mixed Usage
Score components:
The Dell U4919DW is a good monitor for most uses. It has great wide viewing angles, good peak brightness, and an excellent color gamut. Unfortunately, it doesn't look as good in a dark room, and gamers may be disappointed by the 60 Hz refresh rate, and lack of variable refresh rate.
This is a great monitor for office use. It has wide viewing angles, and the high resolution, large screen is excellent for multitasking. Like the U3818DW, it allows you to work on two computers at once, great if you have a work and personal computer.
Overall, the U4919D is a good monitor for gaming. It has a great response time and low input lag at the native resolution, but the 60 Hz refresh rate may disappoint more serious gamers, and it doesn't support any variable refresh rate technologies.
Decent monitor for multimedia. The high resolution 32:9 screen is great for watching movies, and it has a fast response time, with little blur trail behind fast moving objects. Unfortunately, it doesn't look as good in a dark room.
Decent monitor for media creation. The large, wide format screen allows you to see more of your project at once. It also has excellent wide viewing angles, great for sharing your work with a nearby colleague.
The Dell U4919DW does not support HDR. For a decent HDR monitor, check out the Samsung CHG90.

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