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  1. Table of Contents
  2. Top
  3. Main Differences
  4. Design
    1. Style
    2. Stand
    3. Ergonomics
    4. Back
    5. Borders
    6. Thickness
    7. Build Quality
  5. Picture Quality
    1. Contrast
    2. Local Dimming
    3. SDR Peak Brightness
    4. HDR Peak Brightness
    5. Horizontal Viewing Angle
    6. Vertical Viewing Angle
    7. Gray Uniformity
    8. Black Uniformity
    9. Pre Calibration
    10. Post Calibration
    11. SDR Color Gamut
    12. SDR Color Volume
    13. HDR Color Gamut
    14. HDR Color Volume
    15. Image Retention
    16. Gradient
    17. Color Bleed
    18. Reflections
    19. Text Clarity
  6. Motion
    1. Response Time @ Max Refresh Rate
    2. Response Time @ 60Hz
    3. Image Flicker
    4. Black Frame Insertion (BFI)
    5. Refresh Rate
  7. Inputs
    1. Input Lag
    2. Resolution And Size
    3. Inputs
    4. Total Inputs
  8. Features
    1. Additional Features
    2. On-Screen Display (OSD)
    3. Controls
    4. In The Box
  9. Comments

Lenovo Q27q-10 vs Dell UltraSharp U2721DE

Side-by-Side Comparison

Products

Lenovo Q27q-10
Dell UltraSharp U2721DE

Tested using Methodology v1.1

Updated Jul 04, 2022 06:51 PM

SEE PRICE
Amazon.com

Tested using Methodology v1.1

Updated Dec 14, 2023 04:44 PM

SEE PRICE
Amazon.com
Lenovo Q27q-10 Picture
Dell UltraSharp U2721DE Picture

Variants

  • Q27q-10 (27")
  • UltraSharp U2721DE (27")

Our Verdict

Lenovo Q27q-10

Dell UltraSharp U2721DE

The Dell UltraSharp U2721DE is much better than the Lenovo Q27q-10. The U2721DE has much better ergonomics, it's brighter, and it can display a wider color gamut. The Dell has a lower refresh rate and it doesn't support any variable refresh rate technologies, but despite this, it has a better response time than the Lenovo, resulting in cleaner-looking motion.

0

Check Price

27"
UltraSharp U2721DE
SEE PRICE
Amazon.com
27"
UltraSharp U2721DE
SEE PRICE
Amazon.com
27"
UltraSharp U2721DE
SEE PRICE
Amazon.com
27"
UltraSharp U2721DE
SEE PRICE
Amazon.com

Main Differences for

Threshold 

0.10

Mixed Usage 

7.0
7.4

Ergonomics 
 

1.8
8.5

Full Comparison

Design

Style  

Design Picture  

Lenovo Q27q-10 Design Picture
Dell UltraSharp U2721DE Design Picture

Size  

27"
27"

Curved  

No
No

Curve Radius  

Not Curved
Not Curved

Weight (without stand) 
 

7.7 lbs (3.5 kg)
8.9 lbs (4.0 kg)

Weight (with stand) 
 

11.7 lbs (5.3 kg)
12.6 lbs (5.7 kg)

Show text

Stand  

Stand Picture  

Lenovo Q27q-10 Stand Picture
Dell UltraSharp U2721DE Stand Picture

Width 
 

9.3" (23.7 cm)
9.1" (23.0 cm)

Depth 
 

7.0" (17.8 cm)
7.1" (18.0 cm)

Show text

Ergonomics 
 

1.8
8.5

Ergonomics Picture  

Lenovo Q27q-10 Ergonomics Picture
Dell UltraSharp U2721DE Ergonomics Picture

Height Adjustment 
 

0.0" (0.0 cm)
5.1" (13.0 cm)

Switch Portrait/Landscape  

No
Yes, Both Ways

Swivel Range  

No swivel
-40° to 40°

Tilt Range  

-22.5° to 5°
-20° to 5°

Show text

Back  

Back Picture  

Lenovo Q27q-10 Back Picture
Dell UltraSharp U2721DE Back Picture

Wall Mount  

VESA 100x100
VESA 100x100

Show text

Borders  

Borders Picture  

Lenovo Q27q-10 Borders Picture
Dell UltraSharp U2721DE Borders Picture

Borders 
 

0.3" (0.9 cm)
0.2" (0.6 cm)

Show text

Thickness  

Thickness Picture  

Lenovo Q27q-10 Thickness Picture
Dell UltraSharp U2721DE Thickness Picture

Thickness (with stand) 
 

4.3" (11.0 cm)
5.0" (12.8 cm)

Thickness (without stand) 
 

1.5" (3.8 cm)
1.5" (3.8 cm)

Show text

Build Quality 
 

7.5
7.5

Build Quality Picture  

Lenovo Q27q-10 Build Quality Picture
Dell UltraSharp U2721DE Build Quality Picture

Show text

Picture Quality

Contrast 
 

6.0
6.0

Checkerboard Picture  

Lenovo Q27q-10 Checkerboard Picture
Dell UltraSharp U2721DE Checkerboard Picture

Native Contrast 
 

1,013 : 1
1,014 : 1

Contrast With Local Dimming 
 

N/A
N/A

Show text

Local Dimming 
 

0.0
0.0

Local Dimming Video  

Local Dimming 
 

No
No

Backlight 
 

Edge
Edge

Show text

SDR Peak Brightness 
 

7.2
7.7

SDR Real Scene 
 

271 cd/m²
314 cd/m²

SDR Peak 2% Window 
 

294 cd/m²
347 cd/m²

SDR Peak 10% Window 
 

295 cd/m²
348 cd/m²

SDR Peak 25% Window 
 

295 cd/m²
348 cd/m²

SDR Peak 50% Window 
 

295 cd/m²
349 cd/m²

SDR Peak 100% Window 
 

295 cd/m²
349 cd/m²

SDR Sustained 2% Window 
 

294 cd/m²
347 cd/m²

SDR Sustained 10% Window 
 

295 cd/m²
348 cd/m²

SDR Sustained 25% Window 
 

295 cd/m²
348 cd/m²

SDR Sustained 50% Window 
 

295 cd/m²
349 cd/m²

SDR Sustained 100% Window 
 

295 cd/m²
349 cd/m²

SDR ABL 
 

0.000
0.000

Show text

HDR Peak Brightness 
 

0.0
0.0

HDR Real Scene 
 

N/A
N/A

HDR Peak 2% Window 
 

N/A
N/A

HDR Peak 10% Window 
 

N/A
N/A

HDR Peak 25% Window 
 

N/A
N/A

HDR Peak 50% Window 
 

N/A
N/A

HDR Peak 100% Window 
 

N/A
N/A

HDR Sustained 2% Window 
 

N/A
N/A

HDR Sustained 10% Window 
 

N/A
N/A

HDR Sustained 25% Window 
 

N/A
N/A

HDR Sustained 50% Window 
 

N/A
N/A

HDR Sustained 100% Window 
 

N/A
N/A

HDR ABL 
 

N/A
N/A

Show text

Horizontal Viewing Angle 
 

7.9
7.4

Horizontal Viewing Angle Video  

Horizontal Chroma Graph  

Lenovo Q27q-10 Horizontal Chroma Graph
Dell UltraSharp U2721DE Horizontal Chroma Graph

Color Washout From Left 
 

46°
39°

Color Washout From Right 
 

46°
39°

Horizontal Hue Graph  

Lenovo Q27q-10 Horizontal Hue Graph
Dell UltraSharp U2721DE Horizontal Hue Graph

Color Shift From Left 
 

45°
48°

Color Shift From Right 
 

59°
47°

Horizontal Lightness Graph  

Lenovo Q27q-10 Horizontal Lightness Graph
Dell UltraSharp U2721DE Horizontal Lightness Graph

Brightness Loss From Left 
 

45°
45°

Brightness Loss From Right 
 

45°
46°

Black Level Raise From Left 
 

70°
70°

Black Level Raise From Right 
 

70°
41°

Gamma Shift From Left 
 

32°
39°

Gamma Shift From Right 
 

50°
38°

Show text

Vertical Viewing Angle 
 

7.1
7.6

Vertical Viewing Angle Video  

Vertical Chroma Graph  

Lenovo Q27q-10 Vertical Chroma Graph
Dell UltraSharp U2721DE Vertical Chroma Graph

Color Washout From Below 
 

29°
32°

Color Washout From Above 
 

29°
34°

Vertical Hue Graph  

Lenovo Q27q-10 Vertical Hue Graph
Dell UltraSharp U2721DE Vertical Hue Graph

Color Shift From Below 
 

50°
41°

Color Shift From Above 
 

48°
43°

Vertical Lightness Graph  

Lenovo Q27q-10 Vertical Lightness Graph
Dell UltraSharp U2721DE Vertical Lightness Graph

Brightness Loss From Below 
 

35°
34°

Brightness Loss From Above 
 

35°
36°

Black Level Raise From Below 
 

70°
70°

Black Level Raise From Above 
 

70°
70°

Gamma Shift From Below 
 

32°
44°

Gamma Shift From Above 
 

31°
63°

Show text

Gray Uniformity 
 

8.7
8.7

50% Uniformity Picture  

Lenovo Q27q-10 50% Uniformity Picture
Dell UltraSharp U2721DE 50% Uniformity Picture

50% Std. Dev. 
 

3.429%
2.436%

50% DSE 
 

0.099%
0.115%

5% Uniformity Picture  

Lenovo Q27q-10 5% Uniformity Picture
Dell UltraSharp U2721DE 5% Uniformity Picture

5% Std. Dev. 
 

0.382%
0.279%

5% DSE 
 

0.053%
0.041%

Show text

Black Uniformity 
 

6.2
7.1

Native Black Uniformity Picture  

Lenovo Q27q-10 Native Black Uniformity Picture
Dell UltraSharp U2721DE Native Black Uniformity Picture

Native Std. Dev. 
 

1.869%
1.219%

Black Uniformity Picture With Local Dimming  

Lenovo Q27q-10 Black Uniformity Picture With Local Dimming
Dell UltraSharp U2721DE Black Uniformity Picture With Local Dimming

Std. Dev. w/ L.D. 
 

N/A
N/A

Show text

Pre Calibration 
 

5.1
7.1

Pre Calibration Picture  

Lenovo Q27q-10 Pre Calibration Picture
Dell UltraSharp U2721DE Pre Calibration Picture

Pre Gamma Curve Picture  

Lenovo Q27q-10 Pre Gamma Curve Picture
Dell UltraSharp U2721DE Pre Gamma Curve Picture

Pre Color Picture  

Lenovo Q27q-10 Pre Color Picture
Dell UltraSharp U2721DE Pre Color Picture

Picture Mode 
 

Standard (sRGB)
Standard

Luminance 
 

218 cd/m²
103 cd/m²

Luminance Settings 
 

27
22

Contrast Setting 
 

85
78

RGB Controls 
 

100-100-100
100-100-100

Gamma Setting 
 

No Gamma Setting
No Gamma Setting

Color Temperature 
 

6,395 K
5,949 K

White Balance dE 
 

5.08
3.53

Color dE 
 

4.73
3.19

Gamma 
 

2.19
2.24

Show text

Post Calibration 
 

9.4
9.7

Post Calibration Picture  

Lenovo Q27q-10 Post Calibration Picture
Dell UltraSharp U2721DE Post Calibration Picture

Post Gamma Curve Picture  

Lenovo Q27q-10 Post Gamma Curve Picture
Dell UltraSharp U2721DE Post Gamma Curve Picture

Post Color Picture  

Lenovo Q27q-10 Post Color Picture
Dell UltraSharp U2721DE Post Color Picture

Picture Mode 
 

Standard (custom)
Custom Color

Luminance 
 

115 cd/m²
101 cd/m²

Luminance Settings 
 

0
23

Contrast Setting 
 

85
78

RGB Controls 
 

86-94-100
94-92-100

Gamma Setting 
 

No Gamma Setting
No Gamma Setting

Color Temperature 
 

6,453 K
6,489 K

White Balance dE 
 

0.42
0.40

Color dE 
 

1.20
0.52

Gamma 
 

2.18
2.17

Show text

SDR Color Gamut 
 

7.9
8.6

Color Gamut sRGB Picture  

Lenovo Q27q-10 Color Gamut sRGB Picture
Dell UltraSharp U2721DE Color Gamut sRGB Picture

sRGB xy 
 

88.8%
96.8%

Color Gamut ARGB Picture  

Lenovo Q27q-10 Color Gamut ARGB Picture
Dell UltraSharp U2721DE Color Gamut ARGB Picture

Adobe RGB xy 
 

69.2%
75.3%

sRGB Picture Mode 
 

Standard (custom)
Custom Color

Adobe RGB Picture Mode 
 

Standard (custom)
Custom Color

Show text

SDR Color Volume 
 

8.2
8.9

sRGB Color Volume ITP Picture  

Lenovo Q27q-10 sRGB Color Volume ITP Picture
Dell UltraSharp U2721DE sRGB Color Volume ITP Picture

sRGB In ICtCp 
 

89.2%
96.6%

Adobe RGB Color Volume ITP Picture  

Lenovo Q27q-10 Adobe RGB Color Volume ITP Picture
Dell UltraSharp U2721DE Adobe RGB Color Volume ITP Picture

Adobe RGB In ICtCp 
 

73.5%
81.4%

sRGB Picture Mode 
 

Standard (custom)
Custom Color

Adobe RGB Picture Mode 
 

Standard (custom)
Custom Color

Show text

HDR Color Gamut 
 

0.0
0.0

Wide Color Gamut 
 

N/A
N/A

Color Gamut DCI-P3 Picture  

Lenovo Q27q-10 Color Gamut DCI-P3 Picture
Dell UltraSharp U2721DE Color Gamut DCI-P3 Picture

DCI P3 xy 
 

N/A
N/A

Color Gamut Rec.2020 Picture  

Lenovo Q27q-10 Color Gamut Rec.2020 Picture
Dell UltraSharp U2721DE Color Gamut Rec.2020 Picture

Rec. 2020 xy 
 

N/A
N/A

DCI P3 Picture Mode 
 

No HDR
No HDR

Rec. 2020 Picture Mode 
 

No HDR
No HDR

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HDR Color Volume 
 

0.0
0.0

P3 Color Volume ITP Picture  

Lenovo Q27q-10 P3 Color Volume ITP Picture
Dell UltraSharp U2721DE P3 Color Volume ITP Picture

DCI-P3 In ICtCp 
 

N/A
N/A

2020 Color Volume ITP Picture  

Lenovo Q27q-10 2020 Color Volume ITP Picture
Dell UltraSharp U2721DE 2020 Color Volume ITP Picture

Rec. 2020 In ICtCp 
 

N/A
N/A

DCI P3 Picture Mode 
 

No HDR
No HDR

Rec. 2020 Picture Mode 
 

No HDR
No HDR

Show text

Image Retention 
 

10
10

Image Retention Picture  

Lenovo Q27q-10 Image Retention Picture
Dell UltraSharp U2721DE Image Retention Picture

IR After 0 Min Recovery 
 

0.00%
0.00%

IR After 2 Min Recovery 
 

0.00%
0.00%

IR After 4 Min Recovery 
 

0.00%
0.00%

IR After 6 Min Recovery 
 

0.00%
0.00%

IR After 8 Min Recovery 
 

0.00%
0.00%

IR After 10 Min Recovery 
 

0.00%
0.00%

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Gradient 
 

8.3
7.8

Gradient Picture  

Lenovo Q27q-10 Gradient Picture
Dell UltraSharp U2721DE Gradient Picture

Color Depth 
 

8 Bit
8 Bit

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Color Bleed 
 

10
10

Color Bleed Horizontal  

Lenovo Q27q-10 Color Bleed Horizontal
Dell UltraSharp U2721DE Color Bleed Horizontal

Pixel Row Error 
 

0.001%
0.000%

Color Bleed Vertical  

Lenovo Q27q-10 Color Bleed Vertical
Dell UltraSharp U2721DE Color Bleed Vertical

Pixel Column Error 
 

0.005%
0.002%

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Reflections 
 

8.1
7.6

Average Room  

Lenovo Q27q-10 Average Room
Dell UltraSharp U2721DE Average Room

Average Room Off Picture  

Lenovo Q27q-10 Average Room Off Picture
Dell UltraSharp U2721DE Average Room Off Picture

Bright Room Off Picture  

Lenovo Q27q-10 Bright Room Off Picture
Dell UltraSharp U2721DE Bright Room Off Picture

Screen Finish 
 

Matte
Matte

Total Reflections 
 

4.8%
6.5%

Indirect Reflections 
 

3.8%
5.7%

Calculated Direct Reflections 
 

1.0%
0.8%

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Text Clarity 
 

7.0
7.0

ClearType On  

Lenovo Q27q-10 ClearType On
Dell UltraSharp U2721DE ClearType On

Pixel Type 
 

IPS
IPS

ClearType Off  

Lenovo Q27q-10 ClearType Off
Dell UltraSharp U2721DE ClearType Off

Pixels  

Lenovo Q27q-10 Pixels
Dell UltraSharp U2721DE Pixels

Sub-Pixel Layout 
 

RGB
RGB

Show text

Motion

Response Time @ Max Refresh Rate 
 

6.4
7.1

Motion Blur Picture  

Lenovo Q27q-10 Motion Blur Picture
Dell UltraSharp U2721DE Motion Blur Picture

Response Time Table  

Lenovo Q27q-10 Response Time Table
Dell UltraSharp U2721DE Response Time Table

Best Overdrive Setting 
 

Normal
Normal

Rise / Fall Time 
 

6.5 ms
7.7 ms

Total Response Time 
 

22.2 ms
19.2 ms

Overshoot Error 
 

11.7%
4.5%

Dark Rise / Fall Time 
 

7.1 ms
8.4 ms

Dark Total Response Time 
 

22.7 ms
20.7 ms

Dark Overshoot Error 
 

12.8%
6.0%

Show text

Response Time @ 60Hz 
 

4.6
7.1

Motion Blur Picture  

Lenovo Q27q-10 Motion Blur Picture
Dell UltraSharp U2721DE Motion Blur Picture

Response Time Table  

Lenovo Q27q-10 Response Time Table
Dell UltraSharp U2721DE Response Time Table

Best Overdrive Setting 
 

Normal
Normal

Rise / Fall Time 
 

6.4 ms
7.7 ms

Total Response Time 
 

28.5 ms
19.2 ms

Overshoot Error 
 

17%
4.5%

Dark Rise / Fall Time 
 

7.0 ms
8.4 ms

Dark Total Response Time 
 

29.0 ms
20.7 ms

Dark Overshoot Error 
 

21.5%
6.0%

Show text

Image Flicker 
 

10
10

Backlight Picture  

Lenovo Q27q-10 Backlight Picture
Dell UltraSharp U2721DE Backlight Picture

Flicker-Free  

Yes
Yes

PWM Dimming Frequency 
 

0 Hz
0 Hz

Show text

Black Frame Insertion (BFI) 
 

0.0
0.0

Black Frame Insertion (BFI) 
 

No BFI
No BFI

BFI Picture  

Lenovo Q27q-10 BFI Picture
Dell UltraSharp U2721DE BFI Picture

BFI Frequency Picture  

Lenovo Q27q-10 BFI Frequency Picture
Dell UltraSharp U2721DE BFI Frequency Picture

BFI Maximum Frequency 
 

N/A
N/A

BFI Minimum Frequency 
 

N/A
N/A

Show text

Refresh Rate 
 

7.7
5.9

Variable Refresh Rate 
 

FreeSync
No VRR

Native 
 

75 Hz
60 Hz

Max Refresh Rate 
 

75 Hz
60 Hz

Variable Refresh Rate 
 

Yes
No

FreeSync 
 

Yes
No

G-SYNC 
 

Compatible (Tested)
No

VRR Maximum 
 

75 Hz
N/A

VRR Minimum 
 

48 Hz
No VRR

VRR Supported Connectors  

DisplayPort, HDMI
No VRR

Show text

Inputs

Input Lag 
 

9.2
9.0

Native Resolution 
 

6.6 ms
8.7 ms

Native Resolution @ 60Hz 
 

8.7 ms
8.7 ms

Variable Refresh Rate 
 

7.8 ms
N/A

Variable Refresh Rate @ 60Hz 
 

9.4 ms
N/A

10 Bit HDR 
 

N/A
N/A

Black Frame Insertion (BFI) 
 

N/A
N/A

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Resolution And Size 
 

8.3
8.3

Native Resolution  

2560 x 1440
2560 x 1440

Aspect Ratio  

16:9
16:9

Megapixels  

3.7 MP
3.7 MP

Pixel Density 
 

109 PPI
109 PPI

Screen Diagonal  

27.0"
27.0"

Screen Area  

310 in²
310 in²

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Inputs  

Inputs 1  

Lenovo Q27q-10 Inputs 1
Dell UltraSharp U2721DE Inputs 1

Inputs 2  

Lenovo Q27q-10 Inputs 2
Dell UltraSharp U2721DE Inputs 2

Total Inputs  

DisplayPort  

1 (DP 1.2)
1 (DP 1.4)

Mini DisplayPort  

No
No

HDMI  

1 (HDMI 1.4)
1 (HDMI 1.4)

DVI  

No
No

VGA  

No
No

DisplayPort Out  

No
1 (DP 1.4)

USB  

No
4 (USB 3.0)

USB C  

No
1 (USB, USB PD, DP Alt Mode)

Analog Audio Out 3.5mm  

1
1

Microphone In 3.5mm  

No
No

Digital Optical Audio Out  

No
No

Analog Audio Out RCA  

No
No

Power Supply  

External Brick
Internal

Show text

Features

Additional Features 
 

RGB Illumination 
 

No
No

Speakers 
 

Yes
No

HDR10  

No
No

Multiple Input Display 
 

No
No

Show text

On-Screen Display (OSD)  

OSD Picture  

Lenovo Q27q-10 OSD Picture
Dell UltraSharp U2721DE OSD Picture

Controls  

Controls Picture  

Lenovo Q27q-10 Controls Picture
Dell UltraSharp U2721DE Controls Picture

Show text

In The Box  

In The Box Picture  

Lenovo Q27q-10 In The Box Picture
Dell UltraSharp U2721DE In The Box Picture

Show text

Check Price

27"
UltraSharp U2721DE
SEE PRICE
Amazon.com
27"
UltraSharp U2721DE
SEE PRICE
Amazon.com
27"
UltraSharp U2721DE
SEE PRICE
Amazon.com
27"
UltraSharp U2721DE
SEE PRICE
Amazon.com

Lenovo Q27q-10

Dell UltraSharp U2721DE

Comments

  1. Comparison

Lenovo Q27q-10 vs Dell UltraSharp U2721DE: Main Discussion

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