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  1. Home
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LG 27UK650-W vs Dell S2721QS

Which Monitor Is Better?

    Top
    Main Differences
    Design
      StyleAccelerated Longevity TestBuild QualityErgonomicsStandDisplayControlsIn The BoxBackBordersThickness
    Picture Quality
      ContrastLocal DimmingSDR BrightnessHDR BrightnessHorizontal Viewing AngleVertical Viewing AngleGray UniformityBlack UniformityColor Accuracy (Pre-Calibration)Color Accuracy (Post-Calibration)SDR Color GamutHDR Color GamutHDR Color VolumeText ClarityReflectionsGradientSDR Color VolumeImage RetentionColor Bleed
    Motion
      Refresh RateVariable Refresh Rate (VRR)VRR Motion PerformanceRefresh Rate ComplianceCAD @ Max Refresh RateResponse Time @ Max Refresh RateCAD @ 120HzResponse Time @ 120HzCAD @ 60HzResponse Time @ 60HzBacklight Strobing (BFI)VRR FlickerImage FlickerResponse Time @ 60Hz
    Inputs
      Input LagResolutionPS5 CompatibilityXbox Series X|S CompatibilityInputs PhotosVideo And Audio PortsUSBmacOS Compatibility
    Features
      Additional FeaturesOn-Screen Display (OSD)ControlsIn The Box
    Comments

Products

LG 27UK650-W
Dell S2721QS

Tested using Methodology v1.1

Updated Jun 07, 2024 08:44 PM

SEE PRICE
Amazon.com

Tested using Methodology v2.0.1

Updated Sep 30, 2025 04:33 PM

SEE PRICE
Amazon.com
LG 27UK650-W Picture
Dell S2721QS Picture
Max Refresh Rate
60 Hz
Size
27"
Pixel Type
IPS
Native Resolution
3840 x 2160
Variable Refresh Rate
FreeSync
Max Refresh Rate
60 Hz
Size
27"
Pixel Type
IPS
Native Resolution
3840 x 2160
Variable Refresh Rate
Yes
  1. Recommended in 1 article:
  2. Dell

Our Verdict

LG 27UK650-W

Dell S2721QS

Overall, the Dell S2721QS is a bit better than the LG 27UK650-W. The Dell has better ergonomics, wider viewing angles, and better reflection handling. On the other hand, the LG has better out-of-the-box color accuracy.

0 

Variants

  • 27UK650-W (27")
  • S2721QS (27")

Review

See LG 27UK650-W Review
See Dell S2721QS Review
4 
7 

Check Price

27"
27UK650-W
SEE PRICE
Amazon.com
27"
S2721QS
SEE PRICE
Amazon.com
27"
27UK650-W
SEE PRICE
Walmart.com
27"
S2721QS
SEE PRICE
Walmart.com
27"
27UK650-W
SEARCH
B&H
27"
S2721QS
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B&H
27"
27UK650-W
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BestBuy.com
27"
S2721QS
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27"
S2721QS
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Dell
Read more

Main Differences for
Mixed Usage

Threshold 

0.10

Mixed Usage 
 

7.9
No major differences between these monitors for mixed usage. See full list of tests below.

Full Comparison

Design

Style 
 

Design Picture 
 

Compare High-Res
LG 27UK650-W Design Picture
Compare High-Res
Dell S2721QS Design Picture

Curved 
 

No
No

Curve Radius 
 

Not Curved
Not Curved

Size  

27"
27"

Weight (without stand) 
 

9.9 lbs (4.5 kg)
10.6 lbs (4.8 kg)

Weight (with stand) 
 

13.4 lbs (6.1 kg)
13.9 lbs (6.3 kg)
Show Text 

Accelerated Longevity Test 
 

Uniformity Pictures  

Longevity Graph  

Dell S2721QS Longevity Graph

Build Quality 
 

6.5
7.5

Build Quality Picture 
 

Compare High-Res
LG 27UK650-W Build Quality Picture
Compare High-Res
Dell S2721QS Build Quality Picture
Show Text 

Ergonomics 
 

5.9
8.8

Ergonomics Picture 
 

Compare High-Res
LG 27UK650-W Ergonomics Picture
Compare High-Res
Dell S2721QS Ergonomics Picture

Back Picture 
 

Compare High-Res
LG 27UK650-W Back Picture
Compare High-Res
Dell S2721QS Back Picture

Height Adjustment 
 

4.3" (10.9 cm)
4.3" (11.0 cm)

Min Height To Top Of Panel 
 

15.4" (39.0 cm)

Tilt Range 
 

-17.5° to 2.5°
-20° to 2.5°

Rotate Portrait/Landscape 
 

Yes, Clockwise
Yes, Both Ways

Swivel Range 
 

No swivel
-30° to 30°

Wall Mount 
 

VESA 100x100
VESA 100x100
Show Text 

Stand 
 

Stand Picture 
 

Compare High-Res
LG 27UK650-W Stand Picture
Compare High-Res
Dell S2721QS Stand Picture

Thickness Picture 
 

Compare High-Res
LG 27UK650-W Thickness Picture
Compare High-Res
Dell S2721QS Thickness Picture

Base Width 
 

17.9" (45.5 cm)
10.2" (25.9 cm)

Base Depth 
 

9.1" (23.1 cm)
6.9" (17.6 cm)

Thickness (With Display) 
 

5.6" (14.2 cm)
5.1" (13.0 cm)

Weight (With Display) 
 

13.4 lbs (6.1 kg)
13.9 lbs (6.3 kg)
Show Text 

Display 
 

Display Picture  

Dell S2721QS Display Picture

Size 
 

27"
27"

Housing Width 
 

24.1" (61.2 cm)

Housing Height 
 

14.3" (36.3 cm)

Thickness (Without Stand) 
 

1.7" (4.3 cm)
2.0" (5.2 cm)

Weight (Without Stand) 
 

9.9 lbs (4.5 kg)
10.6 lbs (4.8 kg)

Borders Size (Bezels)  
 

0.3" (0.8 cm)
0.3" (0.7 cm)

Controls 
 

Controls Picture 
 

Compare High-Res
LG 27UK650-W Controls Picture
Compare High-Res
Dell S2721QS Controls Picture
Show Text 

In The Box 
 

In The Box Picture 
 

Compare High-Res
LG 27UK650-W In The Box Picture
Compare High-Res
Dell S2721QS In The Box Picture

Power Supply 
 

External Brick
Internal
Show Text 

Back  

Back Picture 
 

Compare High-Res
LG 27UK650-W Back Picture
Compare High-Res
Dell S2721QS Back Picture

Wall Mount  

VESA 100x100
VESA 100x100
Show Text 

Borders  

Borders Picture  

LG 27UK650-W Borders Picture

Borders 
 

0.3" (0.8 cm)
0.3" (0.7 cm)
Show Text 

Thickness  

Thickness Picture 
 

Compare High-Res
LG 27UK650-W Thickness Picture
Compare High-Res
Dell S2721QS Thickness Picture

Thickness (with stand) 
 

5.6" (14.2 cm)
5.1" (13.0 cm)

Thickness (without stand) 
 

1.7" (4.3 cm)
2.0" (5.2 cm)
Show Text 
Picture Quality

Contrast 
 

6.3
6.3

Checkerboard Picture 
 

Compare High-Res
LG 27UK650-W Checkerboard Picture
Compare High-Res
Dell S2721QS Checkerboard Picture

Native Contrast 
 

1,196 : 1
1,221 : 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 
 

Direct
Edge
Show Text 

SDR Brightness 
 

8.0
8.0

Real Scene 
 

352 cd/m²
362 cd/m²

Peak 2% Window 
 

351 cd/m²
369 cd/m²

Peak 10% Window 
 

352 cd/m²
370 cd/m²

Peak 25% Window 
 

352 cd/m²
371 cd/m²

Peak 50% Window 
 

352 cd/m²
373 cd/m²

Peak 100% Window 
 

351 cd/m²
374 cd/m²

Sustained 2% Window 
 

350 cd/m²
368 cd/m²

Sustained 10% Window 
 

351 cd/m²
369 cd/m²

Sustained 25% Window 
 

351 cd/m²
371 cd/m²

Sustained 50% Window 
 

351 cd/m²
372 cd/m²

Sustained 100% Window 
 

350 cd/m²
373 cd/m²

Automatic Brightness Limiting (ABL) 
 

0.000
0.001

Minimum Brightness 
 

32 cd/m²
Show Text 

HDR Brightness 
 

6.6
6.6

EOTF  

Dell S2721QS EOTF

VESA DisplayHDR Certification 
 

No Certification

Real Scene 
 

385 cd/m²
370 cd/m²

Peak 2% Window 
 

360 cd/m²
387 cd/m²

Peak 10% Window 
 

361 cd/m²
386 cd/m²

Peak 25% Window 
 

361 cd/m²
386 cd/m²

Peak 50% Window 
 

361 cd/m²
385 cd/m²

Peak 100% Window 
 

377 cd/m²
385 cd/m²

Sustained 2% Window 
 

357 cd/m²
386 cd/m²

Sustained 10% Window 
 

359 cd/m²
386 cd/m²

Sustained 25% Window 
 

360 cd/m²
385 cd/m²

Sustained 50% Window 
 

360 cd/m²
385 cd/m²

Sustained 100% Window 
 

361 cd/m²
384 cd/m²

Automatic Brightness Limiting (ABL) 
 

0.001
0.000
Show Text 

Horizontal Viewing Angle 
 

8.1
8.1

Horizontal Viewing Angle Video  

Horizontal Chroma Graph 
 

Compare High-Res
LG 27UK650-W Horizontal Chroma Graph
Compare High-Res
Dell S2721QS Horizontal Chroma Graph

Color Washout From Left 
 

43°
40°

Color Washout From Right 
 

42°
44°

Horizontal Hue Graph 
 

Compare High-Res
LG 27UK650-W Horizontal Hue Graph
Compare High-Res
Dell S2721QS Horizontal Hue Graph

Color Shift From Left 
 

58°
58°

Color Shift From Right 
 

60°
62°

Horizontal Lightness Graph 
 

Compare High-Res
LG 27UK650-W Horizontal Lightness Graph
Compare High-Res
Dell S2721QS Horizontal Lightness Graph

Brightness Loss From Left 
 

48°
44°

Brightness Loss From Right 
 

48°
48°

Black Level Raise From Left 
 

70°
70°

Black Level Raise From Right 
 

70°
70°

Gamma Shift From Left 
 

42°
42°

Gamma Shift From Right 
 

41°
44°
Show Text 

Vertical Viewing Angle 
 

7.6
8.3

Vertical Viewing Angle Video  

Vertical Chroma Graph 
 

Compare High-Res
LG 27UK650-W Vertical Chroma Graph
Compare High-Res
Dell S2721QS Vertical Chroma Graph

Color Washout From Below 
 

34°
35°

Color Washout From Above 
 

36°
37°

Vertical Hue Graph 
 

Compare High-Res
LG 27UK650-W Vertical Hue Graph
Compare High-Res
Dell S2721QS Vertical Hue Graph

Color Shift From Below 
 

49°
61°

Color Shift From Above 
 

49°
62°

Vertical Lightness Graph 
 

Compare High-Res
LG 27UK650-W Vertical Lightness Graph
Compare High-Res
Dell S2721QS Vertical Lightness Graph

Brightness Loss From Below 
 

34°
38°

Brightness Loss From Above 
 

36°
38°

Black Level Raise From Below 
 

70°
70°

Black Level Raise From Above 
 

70°
70°

Gamma Shift From Below 
 

44°
60°

Gamma Shift From Above 
 

55°
67°
Show Text 

Gray Uniformity 
 

8.7
7.8

50% Uniformity Picture 
 

Compare High-Res
LG 27UK650-W 50% Uniformity Picture
Compare High-Res
Dell S2721QS 50% Uniformity Picture

50% Std. Dev. 
 

3.070%
4.171%

50% DSE 
 

0.109%
0.142%

5% Uniformity Picture  

LG 27UK650-W 5% Uniformity Picture

5% Std. Dev. 
 

0.352%

5% DSE 
 

0.070%
Show Text 

Black Uniformity 
 

6.0
7.1

Native Black Uniformity Picture 
 

Compare High-Res
LG 27UK650-W Native Black Uniformity Picture
Compare High-Res
Dell S2721QS Native Black Uniformity Picture

Native Std. Dev. 
 

2.002%
1.208%

Black Uniformity Picture With Local Dimming 
 

Compare High-Res
LG 27UK650-W Black Uniformity Picture With Local Dimming
Compare High-Res
Dell S2721QS Black Uniformity Picture With Local Dimming

Std. Dev. w/ L.D. 
 

N/A
N/A
Show Text 

Color Accuracy (Pre-Calibration) 
 

8.1
7.0

Pre Calibration Picture 
 

Compare High-Res
LG 27UK650-W Pre Calibration Picture
Compare High-Res
Dell S2721QS Pre Calibration Picture

Pre Gamma Curve Picture 
 

Compare High-Res
LG 27UK650-W Pre Gamma Curve Picture
Compare High-Res
Dell S2721QS Pre Gamma Curve Picture

Pre Color Picture 
 

Compare High-Res
LG 27UK650-W Pre Color Picture
Compare High-Res
Dell S2721QS Pre Color Picture

Picture Mode 
 

SMPTE-C
Custom Color

sRGB Gamut Area xy 
 

116.9%

White Balance dE (Avg.) 
 

2.17
3.02

Color Temperature (Avg.) 
 

6,746 K
6,926 K

Gamma (Avg.) 
 

2.16
2.39

Color dE (Avg.) 
 

2.65
3.15

Contrast Setting 
 

70
75

RGB Settings 
 

N/A
100-100-100

Gamma Setting 
 

No Gamma Setting
No Gamma Setting

Brightness Setting 
 

50
75

Measured Brightness 
 

227 cd/m²
334 cd/m²

Brightness Locked 
 

No
Show Text 

Color Accuracy (Post-Calibration) 
 

9.5
9.6

Post Calibration Picture 
 

Compare High-Res
LG 27UK650-W Post Calibration Picture
Compare High-Res
Dell S2721QS Post Calibration Picture

Post Gamma Curve Picture 
 

Compare High-Res
LG 27UK650-W Post Gamma Curve Picture
Compare High-Res
Dell S2721QS Post Gamma Curve Picture

Post Color Picture 
 

Compare High-Res
LG 27UK650-W Post Color Picture
Compare High-Res
Dell S2721QS Post Color Picture

Picture Mode 
 

Custom
Custom Color

sRGB Gamut Area xy 
 

102.5%

White Balance dE (Avg.) 
 

0.71
0.59

Color Temperature (Avg.) 
 

6,435 K
6,535 K

Gamma (Avg.) 
 

2.18
2.17

Color dE (Avg.) 
 

0.68
0.57

Contrast Setting 
 

71
71

RGB Settings 
 

46-50-48
100-97-97

Gamma Setting 
 

Mode 4
No Gamma Setting

Brightness Setting 
 

17
20

Measured Brightness 
 

102 cd/m²
99 cd/m²

ICC Profile 
 

Download
Show Text 

SDR Color Gamut 
 

8.8
9.4

sRGB Color Gamut Picture 
 

Compare High-Res
LG 27UK650-W sRGB Color Gamut Picture
Compare High-Res
Dell S2721QS sRGB Color Gamut Picture

sRGB Coverage xy 
 

98.5%
100.0%

sRGB Picture Mode 
 

Custom
Custom Color

Adobe RGB Color Gamut Picture 
 

Compare High-Res
LG 27UK650-W Adobe RGB Color Gamut Picture
Compare High-Res
Dell S2721QS Adobe RGB Color Gamut Picture

Adobe RGB Coverage xy 
 

76.4%
80.5%

Adobe RGB Picture Mode 
 

Photo
Custom Color
Show Text 

HDR Color Gamut 
 

6.9
7.2

Wide Color Gamut 
 

No
Yes

DCI-P3 Color Gamut Picture 
 

Compare High-Res
LG 27UK650-W DCI-P3 Color Gamut Picture
Compare High-Res
Dell S2721QS DCI-P3 Color Gamut Picture

DCI-P3 Coverage xy 
 

85.2%

DCI-P3 Picture Mode 
 

HDR Standard
Desktop

Rec. 2020 Color Gamut Picture 
 

Compare High-Res
LG 27UK650-W Rec. 2020 Color Gamut Picture
Compare High-Res
Dell S2721QS Rec. 2020 Color Gamut Picture

Rec. 2020 Coverage xy 
 

57.5%
61.1%

Rec. 2020 Picture Mode 
 

HDR Standard
Desktop

DCI P3 xy 
 

78.8%
Show Text 

HDR Color Volume 
 

5.9
6.7

DCI-P3 Color Volume ITP Picture 
 

Compare High-Res
LG 27UK650-W DCI-P3 Color Volume ITP Picture
Compare High-Res
Dell S2721QS DCI-P3 Color Volume ITP Picture

1,000 cd/m² DCI-P3 Coverage ICtCp 
 

68.4%
56.3%

DCI-P3 Picture Mode 
 

HDR Standard
Desktop

Rec. 2020 Color Volume ITP Picture 
 

Compare High-Res
LG 27UK650-W Rec. 2020 Color Volume ITP Picture
Compare High-Res
Dell S2721QS Rec. 2020 Color Volume ITP Picture

10,000 cd/m² Rec. 2020 Coverage ICtCp 
 

49.1%
24.1%

Rec. 2020 Picture Mode 
 

HDR Standard
Desktop
Show Text 

Text Clarity 
 

9.5
9.0

ClearType On 
 

Compare High-Res
LG 27UK650-W ClearType On
Compare High-Res
Dell S2721QS ClearType On

ClearType Off 
 

Compare High-Res
LG 27UK650-W ClearType Off
Compare High-Res
Dell S2721QS ClearType Off

Pixel Type 
 

IPS
IPS

Pixels 
 

Compare High-Res
LG 27UK650-W Pixels
Compare High-Res
Dell S2721QS Pixels

Subpixel Layout 
 

RGB
RGB
Show Text 

Reflections 
 

7.3
7.8

Average Room 
 

Compare High-Res
LG 27UK650-W Average Room
Compare High-Res
Dell S2721QS Average Room

Average Room Off Picture 
 

Compare High-Res
LG 27UK650-W Average Room Off Picture
Compare High-Res
Dell S2721QS Average Room Off Picture

Bright Room Off Picture 
 

Compare High-Res
LG 27UK650-W Bright Room Off Picture
Compare High-Res
Dell S2721QS Bright Room Off Picture

Screen Finish 
 

Matte
Matte

Total Reflections 
 

5.6%
4.5%

Indirect Reflections 
 

3.0%
2.5%

Calculated Direct Reflections 
 

2.6%
2.0%
Show Text 

Gradient 
 

9.9
9.8

Gradient Picture 
 

Compare High-Res
LG 27UK650-W Gradient Picture
Compare High-Res
Dell S2721QS Gradient Picture

Color Depth 
 

10 Bit
10 Bit
Show Text 

SDR Color Volume 
 

9.0

sRGB Color Volume ITP Picture  

LG 27UK650-W sRGB Color Volume ITP Picture

sRGB In ICtCp 
 

98.9%

Adobe RGB Color Volume ITP Picture  

LG 27UK650-W Adobe RGB Color Volume ITP Picture

Adobe RGB In ICtCp 
 

81.2%

sRGB Picture Mode 
 

Custom

Adobe RGB Picture Mode 
 

Photo
Show Text 

Image Retention 
 

9.3

Image Retention Picture  

LG 27UK650-W Image Retention Picture

IR After 0 Min Recovery 
 

0.26%

IR After 2 Min Recovery 
 

0.00%

IR After 4 Min Recovery 
 

0.00%

IR After 6 Min Recovery 
 

0.00%

IR After 8 Min Recovery 
 

0.00%

IR After 10 Min Recovery 
 

0.00%
Show Text 

Color Bleed 
 

10

Color Bleed Horizontal  

LG 27UK650-W Color Bleed Horizontal

Pixel Row Error 
 

0.000%

Color Bleed Vertical  

LG 27UK650-W Color Bleed Vertical

Pixel Column Error 
 

0.000%
Show Text 
Motion

Refresh Rate 
 

6.0

Native Refresh Rate 
 

60 Hz
60 Hz

Max Refresh Rate 
 

60 Hz
60 Hz

Max Refresh Rate Over DP 
 

60 Hz

Max Refresh Rate Over HDMI 
 

60 Hz

Max Refresh Rate Over DP @ 10-bit 
 

60 Hz

Max Refresh Rate Over HDMI @ 10-Bit 
 

30 Hz
Show Text 

Variable Refresh Rate (VRR) 
 

Variable Refresh Rate 
 

FreeSync
Yes

FreeSync 
 

Yes
Yes

G-SYNC 
 

Partially Compatible
Compatible (Tested)

VRR Maximum 
 

60 Hz
60 Hz

VRR Minimum 
 

40 Hz
40 Hz

VRR Supported Connectors 
 

DisplayPort, HDMI
DisplayPort

Native 
 

60 Hz
60 Hz

Max Refresh Rate 
 

60 Hz
60 Hz

Variable Refresh Rate 
 

Yes
Show Text 

VRR Motion Performance 
 

5.3

Pursuit Photo VRR  

Dell S2721QS Pursuit Photo VRR

OD Mode CAD Comparison  

See details

Recommended VRR OD Setting 
 

Normal

Variable Overdrive Advertised 
 

No

Avg. CAD 
 

373

Best CAD 
 

373

Worst CAD 
 

373
Show Text 

Refresh Rate Compliance 
 

3.9

Fast GTG Sequence  

See details

VRR Compliance  

See details

Compliance @ Max Hz 
 

59%

Compliance @ 120 FPS 
 

N/A

Compliance @ 60 FPS 
 

59%
Show Text 

CAD @ Max Refresh Rate 
 

4.8

Pursuit Photo At Max Refresh 
 

Compare High-Res
LG 27UK650-W Pursuit Photo At Max Refresh
Compare High-Res
Dell S2721QS Pursuit Photo At Max Refresh

CAD Heatmap At Max Refresh 
 

Compare High-Res
LG 27UK650-W CAD Heatmap At Max Refresh
Compare High-Res
Dell S2721QS CAD Heatmap At Max Refresh

OD Transition Max Refresh Rate 
 

od-transition-max-refresh-rate-extreme-0-31
OD extreme
0 to 31

Recommended Overdrive Setting 
 

Normal

Avg. CAD 
 

373

Best 10% CAD 
 

215

Worst 10% CAD 
 

583
Show Text 

Response Time @ Max Refresh Rate 
 

First Response Time 
 

6.8 ms
15.2 ms

Total Response Time 
 

13.5 ms
15.2 ms

Recommended Overdrive Setting 
 

Normal
Normal

RGB Overshoot 
 

1.3%
0 RGB

Worst 10% RGB Overshoot 
 

2.8%
0 RGB

Worst 10% First Response Time 
 

7.4 ms
25.0 ms

Worst 10% Total Response Time 
 

14.7 ms
25.0 ms

Heatmap First Response  

Dell S2721QS Heatmap First Response

Heatmap Total Response  

Dell S2721QS Heatmap Total Response

Heatmap RGB Overshoot  

Dell S2721QS Heatmap RGB Overshoot

Motion Blur Picture 
 

Compare High-Res
LG 27UK650-W Motion Blur Picture
Compare High-Res
Dell S2721QS Motion Blur Picture

Response Time Table 
 

Compare High-Res
LG 27UK650-W Response Time Table
Compare High-Res
Dell S2721QS Response Time Table
Show Text 

CAD @ 120Hz 
 

0.0

Pursuit Photo 120Hz  

Dell S2721QS Pursuit Photo 120Hz

CAD Heatmap 120Hz  

Dell S2721QS CAD Heatmap 120Hz

OD Transition 120Hz 
 

od-transition-120--0-31
-
0 to 31

Recommended Overdrive Setting 
 

No 120Hz Refresh Rate

Avg. CAD 
 

N/A

Best 10% CAD 
 

N/A

Worst 10% CAD 
 

N/A
Show Text 

Response Time @ 120Hz 
 

Worst 10% First Response Time 
 

N/A

RGB Overshoot 
 

N/A

Total Response Time 
 

N/A

First Response Time 
 

N/A

Recommended Overdrive Setting 
 

No 120Hz Refresh Rate

Worst 10% Total Response Time 
 

N/A

Worst 10% RGB Overshoot 
 

N/A

120Hz First Response Heatmap  

Dell S2721QS 120Hz First Response Heatmap

120Hz Total Response Heatmap  

Dell S2721QS 120Hz Total Response Heatmap

120Hz Heatmap RGB Overshoot  

Dell S2721QS 120Hz Heatmap RGB Overshoot
Show Text 

CAD @ 60Hz 
 

4.8

Pursuit Photo 60Hz 
 

Compare High-Res
LG 27UK650-W Pursuit Photo 60Hz
Compare High-Res
Dell S2721QS Pursuit Photo 60Hz

CAD Heatmap 60Hz  

Dell S2721QS CAD Heatmap 60Hz

OD Transition 60Hz 
 

od-transition-60-extreme-0-31
OD extreme
0 to 31

Recommended Overdrive Setting 
 

Normal

Avg. CAD 
 

373

Best 10% CAD 
 

215

Worst 10% CAD 
 

583
Show Text 

Response Time @ 60Hz 
 

Recommended Overdrive Setting 
 

Normal
Normal

First Response Time 
 

6.8 ms
15.2 ms

Total Response Time 
 

13.5 ms
15.2 ms

RGB Overshoot 
 

1.3%
0 RGB

Worst 10% Total Response Time 
 

14.7 ms
25.0 ms

Worst 10% First Response Time 
 

7.4 ms
25.0 ms

Worst 10% RGB Overshoot 
 

2.8%
0 RGB

60Hz First Response Heatmap  

Dell S2721QS 60Hz First Response Heatmap

60Hz Total Response Heatmap  

Dell S2721QS 60Hz Total Response Heatmap

60Hz RGB Overshoot Heatmap  

Dell S2721QS 60Hz RGB Overshoot Heatmap
Show Text 

Backlight Strobing (BFI) 
 

Backlight Strobing Picture 
 

Compare High-Res
LG 27UK650-W Backlight Strobing Picture
Compare High-Res
Dell S2721QS Backlight Strobing Picture

Backlight Strobing Frequency Picture 
 

Compare High-Res
LG 27UK650-W Backlight Strobing Frequency Picture
Compare High-Res
Dell S2721QS Backlight Strobing Frequency Picture

Backlight Strobing (BFI) 
 

No BFI
No BFI

Maximum Frequency 
 

N/A
N/A

Minimum Frequency 
 

N/A
N/A

Longest Pulse Width Brightness 
 

N/A

Shortest Pulse Width Brightness 
 

N/A

Pulse Width Control 
 

No BFI

Pulse Phase Control 
 

No BFI

Pulse Amplitude Control 
 

No BFI

VRR At The Same Time 
 

No BFI
Show Text 

VRR Flicker 
 

9.4

VRR Flicker Video  

VRR Flicker Graph  

Dell S2721QS VRR Flicker Graph

Dark Gray Flicker 
 

0.5 RGB

Middle Gray Flicker 
 

0.3 RGB

Light Gray Flicker 
 

0.1 RGB
Show Text 

Image Flicker 
 

10
10

Backlight Picture 
 

Compare High-Res
LG 27UK650-W Backlight Picture
Compare High-Res
Dell S2721QS Backlight Picture

Flicker-Free 
 

Yes
Yes

PWM Dimming Frequency 
 

0 Hz
0 Hz
Show Text 

Response Time @ 60Hz 
 

8.3

Motion Blur Picture  

LG 27UK650-W Motion Blur Picture

Response Time Table 
 

Compare High-Res
LG 27UK650-W Response Time Table
Compare High-Res
Dell S2721QS Response Time Table

Best Overdrive Setting 
 

Normal
Normal

Rise / Fall Time 
 

6.8 ms
15.2 ms

Total Response Time 
 

13.5 ms
15.2 ms

Overshoot Error 
 

1.3%
0 RGB

Dark Rise / Fall Time 
 

7.4 ms
25.0 ms

Dark Total Response Time 
 

14.7 ms
25.0 ms

Dark Overshoot Error 
 

2.8%
0 RGB
Show Text 
Inputs

Input Lag 
 

9.0
8.3

Native Resolution @ Max Hz 
 

8.8 ms
8.7 ms

Native Resolution @ 120Hz 
 

N/A

Native Resolution @ 60Hz 
 

8.8 ms
8.7 ms

Variable Refresh Rate 
 

9.2 ms

Variable Refresh Rate @ 60Hz 
 

9.4 ms

10 Bit HDR 
 

8.9 ms

Backlight Strobing (BFI) 
 

N/A
N/A
Show Text 

Resolution 
 

9.2
8.8

Native Resolution 
 

3840 x 2160
3840 x 2160

Aspect Ratio 
 

16:9
16:9

Megapixels 
 

8.3 MP
8.3 MP

Pixel Density 
 

164 PPI
163 PPI

Screen Diagonal  

26.9"

Screen Area  

310 in²
Show Text 

PS5 Compatibility 
 

2.3

PS5 Compatibility Photo  

Dell S2721QS PS5 Compatibility Photo

PS5 Compatibility Table  

Dell S2721QS PS5 Compatibility Table

4k @ 120Hz 
 

No

4k @ 60Hz 
 

Yes

1440p @ 120Hz 
 

No

1440p @ 60Hz 
 

Yes

1080p @ 120Hz 
 

No

1080p @ 60Hz 
 

Yes
Show Text 

Xbox Series X|S Compatibility 
 

3.9

XSX Compatibility Photo  

Dell S2721QS XSX Compatibility Photo

XSX Compatibility Table  

Dell S2721QS XSX Compatibility Table

4k @ 120Hz 
 

No

4k @ 60Hz 
 

Yes

1440p @ 120Hz 
 

No

1440p @ 60Hz 
 

Yes

1080p @ 120Hz 
 

No

1080p @ 60Hz 
 

Yes
Show Text 

Inputs Photos  

Inputs 1 
 

Compare High-Res
LG 27UK650-W Inputs 1
Compare High-Res
Dell S2721QS Inputs 1

Inputs 2 
 

Compare High-Res
LG 27UK650-W Inputs 2
Compare High-Res
Dell S2721QS Inputs 2

Video And Audio Ports 
 

DisplayPort 
 

1 (DP 1.2)
1 (DP 1.2)

DisplayPort Transmission Bandwidth 
 

No DisplayPort 2.1

Mini DisplayPort 
 

No
No

HDMI 
 

2 (HDMI 2.0)
2 (HDMI 2.0)

HDMI 2.1 Bandwidth 
 

No HDMI 2.1

DVI 
 

No
No

VGA 
 

No
No

Daisy Chaining 
 

No

3.5mm Audio Out 
 

1
1

3.5mm Audio In 
 

No

3.5mm Microphone In 
 

No
No

DisplayPort Out  

No

USB  

No
0

USB C  

No
0

Digital Optical Audio Out  

No

Analog Audio Out RCA  

No

Power Supply  

External Brick
Internal
Show Text 

USB 
 

USB-A Ports 
 

No
0

USB-A Rated Speed 
 

No USB-A Ports

USB-B Upstream Port 
 

No

USB-C Ports 
 

No
0

USB-C Upstream 
 

No USB-C Ports

USB-C Rated Speed 
 

No USB-C Ports

USB-C Power Delivery 
 

No USB-C Ports

USB-C DisplayPort Alt Mode 
 

No USB-C Ports

Thunderbolt 
 

No
Show Text 

macOS Compatibility 
 

macOS Screenshot  

Dell S2721QS macOS Screenshot
Show Text 
Features

Additional Features 
 

HDR10 
 

Yes
Yes

Speakers 
 

No
Yes

RGB Illumination 
 

No
No

Multiple Input Display 
 

No
PIP + PBP

KVM Switch 
 

No
Show Text 

On-Screen Display (OSD) 
 

OSD Picture 
 

Compare High-Res
LG 27UK650-W OSD Picture
Compare High-Res
Dell S2721QS OSD Picture

Controls  

Controls Picture 
 

Compare High-Res
LG 27UK650-W Controls Picture
Compare High-Res
Dell S2721QS Controls Picture
Show Text 

In The Box  

In The Box Picture 
 

Compare High-Res
LG 27UK650-W In The Box Picture
Compare High-Res
Dell S2721QS In The Box Picture
Show Text 

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LG 27UK650-W

Dell S2721QS

Comments

  1. Comparison
 • Posted 1 year ago

LG 27UK650-W vs Dell S2721QS: Main Discussion

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