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  1. Table of Contents
  2. Top
  3. Main Differences
  4. Design
    1. Style
    2. Accelerated Longevity Test
    3. Build Quality
    4. Ergonomics
    5. Stand
    6. Display
    7. Controls
    8. In The Box
  5. Picture Quality
    1. Contrast
    2. Local Dimming
    3. SDR Brightness
    4. HDR Brightness
    5. Horizontal Viewing Angle
    6. Vertical Viewing Angle
    7. Gray Uniformity
    8. Black Uniformity
    9. Color Accuracy (Pre-Calibration)
    10. Color Accuracy (Post-Calibration)
    11. SDR Color Gamut
    12. HDR Color Gamut
    13. HDR Color Volume
    14. Text Clarity
    15. Reflections
    16. Gradient
    17. SDR Color Volume
  6. Motion
    1. Refresh Rate
    2. Variable Refresh Rate (VRR)
    3. VRR Motion Performance
    4. Refresh Rate Compliance
    5. Response Time @ 60Hz
    6. CAD @ Max Refresh Rate
    7. Response Time @ Max Refresh Rate
    8. CAD @ 120Hz
    9. Response Time @ 120Hz
    10. CAD @ 60Hz
    11. Response Time @ 60Hz
    12. Backlight Strobing (BFI)
    13. VRR Flicker
    14. Image Flicker
  7. Inputs
    1. Input Lag
    2. Resolution
    3. PS5 Compatibility
    4. Xbox Series X|S Compatibility
    5. Inputs Photos
    6. Video And Audio Ports
    7. USB
    8. macOS Compatibility
  8. Features
    1. Additional Features
    2. On-Screen Display (OSD)
  9. Comments

Dell S2721DGF vs Samsung Odyssey G5/G55C S27CG55

Side-by-Side Comparison

Products

Dell S2721DGF
Samsung Odyssey G5/G55C S27CG55

Tested using Methodology v1.2

Updated May 09, 2024 07:49 PM

SEE PRICE
Amazon.com

Tested using Methodology v2.0

Updated Aug 05, 2024 08:24 PM

SEE PRICE
Amazon.com
Dell S2721DGF Picture
Samsung Odyssey G5/G55C S27CG55 Picture

Variants

  • S2721DGF (27")
  • LS27CG552ENXZA (27")

Our Verdict

Dell S2721DGF

Samsung Odyssey G5/G55C S27CG55

The Dell S2721DGF and the Samsung Odyssey G5/G55C S27CG55 are entry-level gaming monitors, but because of their different panel types, they have a few differences. The Dell has better overall motion handling, so it's better for gaming, as fast-moving objects are sharper. The Dell is also better for co-op gaming as it has wider viewing angles, and it's the superior choice if you need to use it in a well-lit room, thanks to its higher brightness and better reflection handling. However, the Samsung is better if you need to use it in a dark room as blacks appear deeper than on the Dell.

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27"
LS27CG552ENXZA
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Notice: Two or more of the products selected have been tested with different test methodologies, so some of the results below aren't directly comparable. Learn how our test benches and scoring system work, and read more about the latest changes to our monitors test methodology.

Main Differences for

Threshold 

0.10

Mixed Usage 

7.7
No major differences between these monitors for mixed usage. See full list of tests below.

Full Comparison

Design

Style 
 

Design Picture  

Dell S2721DGF Design Picture
Samsung Odyssey G5/G55C S27CG55 Design Picture

Curved 
 

No
Yes

Curve Radius 
 

Not Curved
1000R

Show text

Accelerated Longevity Test 
 

Uniformity Pictures  

Longevity Graph  

Dell S2721DGF Longevity Graph

Build Quality 
 

8.0
7.0

Build Quality Picture  

Dell S2721DGF Build Quality Picture
Samsung Odyssey G5/G55C S27CG55 Build Quality Picture

Show text

Ergonomics 
 

9.2
1.7

Ergonomics Picture  

Dell S2721DGF Ergonomics Picture
Samsung Odyssey G5/G55C S27CG55 Ergonomics Picture

Back Picture  

Dell S2721DGF Back Picture
Samsung Odyssey G5/G55C S27CG55 Back Picture

Height Adjustment 
 

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

Min Height To Top Of Panel 
 

N/A

Tilt Range 
 

-20° to 5°
-17.5° to 2.5°

Rotate Portrait/Landscape 
 

Yes, Both Ways
No

Swivel Range 
 

-45° to 45°
No swivel

Wall Mount 
 

VESA 100x100
VESA 75x75

Show text

Stand 
 

Stand Picture  

Dell S2721DGF Stand Picture
Samsung Odyssey G5/G55C S27CG55 Stand Picture

Thickness Picture  

Dell S2721DGF Thickness Picture
Samsung Odyssey G5/G55C S27CG55 Thickness Picture

Base Width 
 

10.9" (27.6 cm)
21.9" (55.5 cm)

Base Depth 
 

7.9" (20.0 cm)
11.2" (28.5 cm)

Thickness (With Display) 
 

6.3" (16.0 cm)
9.3" (23.5 cm)

Weight (With Display) 
 

14.6 lbs (6.6 kg)
9.3 lbs (4.2 kg)

Show text

Display 
 

Display Picture  

Dell S2721DGF Display Picture
Samsung Odyssey G5/G55C S27CG55 Display Picture

Size 
 

27"
27"

Housing Width 
 

24.1" (61.2 cm)
24.2" (61.5 cm)

Housing Height 
 

14.2" (36.1 cm)
15.0" (38.0 cm)

Thickness (Without Stand) 
 

2.6" (6.5 cm)
4.7" (12.0 cm)

Weight (Without Stand) 
 

9.9 lbs (4.5 kg)
8.4 lbs (3.8 kg)

Borders Size (Bezels)  
 

0.3" (0.7 cm)
0.4" (1.0 cm)

Controls 
 

Controls Picture  

Dell S2721DGF Controls Picture
Samsung Odyssey G5/G55C S27CG55 Controls Picture

Show text

In The Box 
 

In The Box Picture  

Dell S2721DGF In The Box Picture
Samsung Odyssey G5/G55C S27CG55 In The Box Picture

Power Supply 
 

Internal
External Brick

Show text

Picture Quality

Contrast 
 

5.8
7.8

Checkerboard Picture  

Dell S2721DGF Checkerboard Picture
Samsung Odyssey G5/G55C S27CG55 Checkerboard Picture

Native Contrast 
 

882 : 1
2,922 : 1

Contrast With Local Dimming 
 

971 : 1
N/A

Show text

Local Dimming 
 

1.0
0.0

Local Dimming Video  

Local Dimming 
 

Yes
No

Backlight 
 

Edge
Edge

Show text

SDR Brightness 
 

8.0
7.8

Real Scene 
 

341 cd/m²
319 cd/m²

Peak 2% Window 
 

364 cd/m²
334 cd/m²

Peak 10% Window 
 

367 cd/m²
335 cd/m²

Peak 25% Window 
 

368 cd/m²
335 cd/m²

Peak 50% Window 
 

368 cd/m²
335 cd/m²

Peak 100% Window 
 

368 cd/m²
336 cd/m²

Sustained 2% Window 
 

364 cd/m²
334 cd/m²

Sustained 10% Window 
 

367 cd/m²
335 cd/m²

Sustained 25% Window 
 

368 cd/m²
335 cd/m²

Sustained 50% Window 
 

368 cd/m²
335 cd/m²

Sustained 100% Window 
 

368 cd/m²
335 cd/m²

Automatic Brightness Limiting (ABL) 
 

0.001
0.000

Minimum Brightness 
 

35 cd/m²
38 cd/m²

Show text

HDR Brightness 
 

6.6
6.3

EOTF  

Dell S2721DGF EOTF
Samsung Odyssey G5/G55C S27CG55 EOTF

VESA DisplayHDR Certification 
 

DisplayHDR 400 - 1.0/1.1
No Certification

Real Scene 
 

328 cd/m²
327 cd/m²

Peak 2% Window 
 

481 cd/m²
342 cd/m²

Peak 10% Window 
 

485 cd/m²
342 cd/m²

Peak 25% Window 
 

486 cd/m²
342 cd/m²

Peak 50% Window 
 

487 cd/m²
342 cd/m²

Peak 100% Window 
 

487 cd/m²
342 cd/m²

Sustained 2% Window 
 

480 cd/m²
342 cd/m²

Sustained 10% Window 
 

484 cd/m²
342 cd/m²

Sustained 25% Window 
 

484 cd/m²
342 cd/m²

Sustained 50% Window 
 

486 cd/m²
342 cd/m²

Sustained 100% Window 
 

486 cd/m²
342 cd/m²

Automatic Brightness Limiting (ABL) 
 

0.003
0.000

Show text

Horizontal Viewing Angle 
 

8.5
5.3

Horizontal Viewing Angle Video  

Horizontal Chroma Graph  

Dell S2721DGF Horizontal Chroma Graph
Samsung Odyssey G5/G55C S27CG55 Horizontal Chroma Graph

Color Washout From Left 
 

46°
30°

Color Washout From Right 
 

47°
26°

Horizontal Hue Graph  

Dell S2721DGF Horizontal Hue Graph
Samsung Odyssey G5/G55C S27CG55 Horizontal Hue Graph

Color Shift From Left 
 

52°
40°

Color Shift From Right 
 

55°
36°

Horizontal Lightness Graph  

Dell S2721DGF Horizontal Lightness Graph
Samsung Odyssey G5/G55C S27CG55 Horizontal Lightness Graph

Brightness Loss From Left 
 

48°
31°

Brightness Loss From Right 
 

49°
28°

Black Level Raise From Left 
 

70°
14°

Black Level Raise From Right 
 

70°
11°

Gamma Shift From Left 
 

60°
15°

Gamma Shift From Right 
 

61°
12°

Show text

Vertical Viewing Angle 
 

6.2
4.9

Vertical Viewing Angle Video  

Vertical Chroma Graph  

Dell S2721DGF Vertical Chroma Graph
Samsung Odyssey G5/G55C S27CG55 Vertical Chroma Graph

Color Washout From Below 
 

32°
25°

Color Washout From Above 
 

33°
25°

Vertical Hue Graph  

Dell S2721DGF Vertical Hue Graph
Samsung Odyssey G5/G55C S27CG55 Vertical Hue Graph

Color Shift From Below 
 

31°
26°

Color Shift From Above 
 

34°
26°

Vertical Lightness Graph  

Dell S2721DGF Vertical Lightness Graph
Samsung Odyssey G5/G55C S27CG55 Vertical Lightness Graph

Brightness Loss From Below 
 

36°
29°

Brightness Loss From Above 
 

37°
29°

Black Level Raise From Below 
 

32°

Black Level Raise From Above 
 

22°

Gamma Shift From Below 
 

30°
14°

Gamma Shift From Above 
 

30°
13°

Show text

Gray Uniformity 
 

8.0
8.4

50% Uniformity Picture  

Dell S2721DGF 50% Uniformity Picture
Samsung Odyssey G5/G55C S27CG55 50% Uniformity Picture

50% Std. Dev. 
 

3.975%
1.735%

50% DSE 
 

0.132%
0.141%

Show text

Black Uniformity 
 

3.9
3.9

Native Black Uniformity Picture  

Dell S2721DGF Native Black Uniformity Picture
Samsung Odyssey G5/G55C S27CG55 Native Black Uniformity Picture

Native Std. Dev. 
 

2.946%
3.384%

Black Uniformity Picture With Local Dimming  

Dell S2721DGF Black Uniformity Picture With Local Dimming
Samsung Odyssey G5/G55C S27CG55 Black Uniformity Picture With Local Dimming

Std. Dev. w/ L.D. 
 

7.261%
N/A

Show text

Color Accuracy (Pre-Calibration) 
 

5.9
8.1

Pre Calibration Picture  

Dell S2721DGF Pre Calibration Picture
Samsung Odyssey G5/G55C S27CG55 Pre Calibration Picture

Pre Gamma Curve Picture  

Dell S2721DGF Pre Gamma Curve Picture
Samsung Odyssey G5/G55C S27CG55 Pre Gamma Curve Picture

Pre Color Picture  

Dell S2721DGF Pre Color Picture
Samsung Odyssey G5/G55C S27CG55 Pre Color Picture

Picture Mode 
 

Standard
Original

sRGB Gamut Area xy 
 

137.7%
101.2%

White Balance dE (Avg.) 
 

3.43
4.39

Color Temperature (Avg.) 
 

6,929 K
7,393 K

Gamma (Avg.) 
 

2.13
2.13

Color dE (Avg.) 
 

3.55
3.02

Contrast Setting 
 

75
50

RGB Settings 
 

Default
0-0-0

Gamma Setting 
 

No Gamma Setting
0

Brightness Setting 
 

75
50

Measured Brightness 
 

223 cd/m²
371 cd/m²

Brightness Locked 
 

No
No

Show text

Color Accuracy (Post-Calibration) 
 

9.8
9.3

Post Calibration Picture  

Dell S2721DGF Post Calibration Picture
Samsung Odyssey G5/G55C S27CG55 Post Calibration Picture

Post Gamma Curve Picture  

Dell S2721DGF Post Gamma Curve Picture
Samsung Odyssey G5/G55C S27CG55 Post Gamma Curve Picture

Post Color Picture  

Dell S2721DGF Post Color Picture
Samsung Odyssey G5/G55C S27CG55 Post Color Picture

Picture Mode 
 

Custom Color
Original

sRGB Gamut Area xy 
 

100.7%
99.4%

White Balance dE (Avg.) 
 

0.54
0.48

Color Temperature (Avg.) 
 

6,504 K
6,510 K

Gamma (Avg.) 
 

2.17
2.18

Color dE (Avg.) 
 

0.34
2.25

Contrast Setting 
 

73
48

RGB Settings 
 

100-96-97
7-3-(-13)

Gamma Setting 
 

No Gamma Setting
0

Brightness Setting 
 

30
9

Measured Brightness 
 

99 cd/m²
99 cd/m²

ICC Profile 
 

Show text

SDR Color Gamut 
 

9.4
9.1

sRGB Color Gamut Picture  

Dell S2721DGF sRGB Color Gamut Picture
Samsung Odyssey G5/G55C S27CG55 sRGB Color Gamut Picture

sRGB Coverage xy 
 

99.6%
99.1%

sRGB Picture Mode 
 

Custom Color
Original

Adobe RGB Color Gamut Picture  

Dell S2721DGF Adobe RGB Color Gamut Picture
Samsung Odyssey G5/G55C S27CG55 Adobe RGB Color Gamut Picture

Adobe RGB Coverage xy 
 

84.5%
76.5%

Adobe RGB Picture Mode 
 

Custom Color
Original

Show text

HDR Color Gamut 
 

9.1
6.1

Wide Color Gamut 
 

Yes
No

DCI-P3 Color Gamut Picture  

Dell S2721DGF DCI-P3 Color Gamut Picture
Samsung Odyssey G5/G55C S27CG55 DCI-P3 Color Gamut Picture

DCI-P3 Coverage xy 
 

97.2%
76.5%

DCI-P3 Picture Mode 
 

Desktop
Graphics

Rec. 2020 Color Gamut Picture  

Dell S2721DGF Rec. 2020 Color Gamut Picture
Samsung Odyssey G5/G55C S27CG55 Rec. 2020 Color Gamut Picture

Rec. 2020 Coverage xy 
 

72.8%
54.8%

Rec. 2020 Picture Mode 
 

Desktop
Graphics

Show text

HDR Color Volume 
 

8.8
6.1

DCI-P3 Color Volume ITP Picture  

Dell S2721DGF DCI-P3 Color Volume ITP Picture
Samsung Odyssey G5/G55C S27CG55 DCI-P3 Color Volume ITP Picture

1,000 cd/m² DCI-P3 Coverage ICtCp 
 

89.8%
46.3%

DCI-P3 Picture Mode 
 

Desktop
Graphics

Rec. 2020 Color Volume ITP Picture  

Dell S2721DGF Rec. 2020 Color Volume ITP Picture
Samsung Odyssey G5/G55C S27CG55 Rec. 2020 Color Volume ITP Picture

10,000 cd/m² Rec. 2020 Coverage ICtCp 
 

71.0%
19.9%

Rec. 2020 Picture Mode 
 

Desktop
Graphics

Show text

Text Clarity 
 

7.5
7.5

ClearType On  

Dell S2721DGF ClearType On
Samsung Odyssey G5/G55C S27CG55 ClearType On

ClearType Off  

Dell S2721DGF ClearType Off
Samsung Odyssey G5/G55C S27CG55 ClearType Off

Pixel Type 
 

IPS
VA

Pixels  

Dell S2721DGF Pixels
Samsung Odyssey G5/G55C S27CG55 Pixels

Subpixel Layout 
 

RGB
RGB

Show text

Reflections 
 

8.1
7.2

Average Room  

Dell S2721DGF Average Room
Samsung Odyssey G5/G55C S27CG55 Average Room

Average Room Off Picture  

Dell S2721DGF Average Room Off Picture
Samsung Odyssey G5/G55C S27CG55 Average Room Off Picture

Bright Room Off Picture  

Dell S2721DGF Bright Room Off Picture
Samsung Odyssey G5/G55C S27CG55 Bright Room Off Picture

Screen Finish 
 

Matte
Semi-Gloss

Total Reflections 
 

4.4%
5.8%

Indirect Reflections 
 

3.0%
3.2%

Calculated Direct Reflections 
 

1.5%
2.6%

Show text

Gradient 
 

9.7
9.8

Gradient Picture  

Dell S2721DGF Gradient Picture
Samsung Odyssey G5/G55C S27CG55 Gradient Picture

Color Depth 
 

10 Bit
10 Bit

Show text

SDR Color Volume 
 

9.6

sRGB Color Volume ITP Picture  

Dell S2721DGF sRGB Color Volume ITP Picture

sRGB In ICtCp 
 

97.5%

sRGB Picture Mode 
 

Custom Color

Adobe RGB Color Volume ITP Picture  

Dell S2721DGF Adobe RGB Color Volume ITP Picture

Adobe RGB In ICtCp 
 

89.5%

Adobe RGB Picture Mode 
 

Custom Color

Show text

Motion

Refresh Rate 
 

8.5
7.5

Native Refresh Rate 
 

165 Hz
165 Hz

Max Refresh Rate 
 

165 Hz
165 Hz

Max Refresh Rate Over DP 
 

165 Hz
165 Hz

Max Refresh Rate Over HDMI 
 

144 Hz
144 Hz

Max Refresh Rate Over DP @ 10-bit 
 

165 Hz
120 Hz

Max Refresh Rate Over HDMI @ 10-Bit 
 

60 Hz
60 Hz

Show text

Variable Refresh Rate (VRR) 
 

Variable Refresh Rate 
 

Yes
Yes

FreeSync 
 

Yes
Yes

G-SYNC 
 

Compatible (NVIDIA Certified)
Compatible (Tested)

VRR Maximum 
 

165 Hz
165 Hz

VRR Minimum 
 

< 20 Hz
< 20 Hz

VRR Supported Connectors 
 

DisplayPort, HDMI
DisplayPort, HDMI

Show text

VRR Motion Performance 
 

3.7

Pursuit Photo VRR  

Samsung Odyssey G5/G55C S27CG55 Pursuit Photo VRR

OD Mode CAD Comparison  

See details on graph tool

Recommended VRR OD Setting 
 

Adaptive-Sync

Variable Overdrive Advertised 
 

No

Avg. CAD 
 

491

Best CAD 
 

460

Worst CAD 
 

542

Show text

Refresh Rate Compliance 
 

4.8

Fast GTG Sequence  

See details on graph tool

VRR Compliance  

See details on graph tool

Compliance @ Max Hz 
 

31%

Compliance @ 120 FPS 
 

40%

Compliance @ 60 FPS 
 

58%

Show text

Response Time @ 60Hz 
 

8.0

Motion Blur Picture  

Dell S2721DGF Motion Blur Picture

Response Time Table  

Dell S2721DGF Response Time Table
Samsung Odyssey G5/G55C S27CG55 Response Time Table

Recommended Overdrive Setting 
 

Fast
Extreme

Rise / Fall Time 
 

4.8 ms
12.6 ms

Total Response Time 
 

11.6 ms
13.8 ms

Overshoot Error 
 

1.0%
2 RGB

Worst 3 Rise / Fall Time 
 

6.5 ms
29.6 ms

Worst 3 Total Response Time 
 

20.2 ms
29.6 ms

Worst 3 Overshoot Error 
 

5.3%
13 RGB

Show text

CAD @ Max Refresh Rate 
 

5.3

Pursuit Photo At Max Refresh  

Dell S2721DGF Pursuit Photo At Max Refresh
Samsung Odyssey G5/G55C S27CG55 Pursuit Photo At Max Refresh

CAD Heatmap At Max Refresh  

Dell S2721DGF CAD Heatmap At Max Refresh
Samsung Odyssey G5/G55C S27CG55 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 
 

Extreme

Avg. CAD 
 

295

Best 10% CAD 
 

91

Worst 10% CAD 
 

680

Show text

Response Time @ Max Refresh Rate 
 

First Response Time 
 

3.5 ms
13.2 ms

Total Response Time 
 

6.3 ms
14.4 ms

Recommended Overdrive Setting 
 

Extreme
Extreme

Motion Blur Picture  

Dell S2721DGF Motion Blur Picture
Samsung Odyssey G5/G55C S27CG55 Motion Blur Picture

RGB Overshoot 
 

1.9%
2 RGB

Worst 10% RGB Overshoot 
 

14.7%
14 RGB

Worst 10% First Response Time 
 

4.2 ms
33.0 ms

Worst 10% Total Response Time 
 

10.6 ms
33.0 ms

Heatmap First Response  

Samsung Odyssey G5/G55C S27CG55 Heatmap First Response

Heatmap Total Response  

Samsung Odyssey G5/G55C S27CG55 Heatmap Total Response

Heatmap RGB Overshoot  

Samsung Odyssey G5/G55C S27CG55 Heatmap RGB Overshoot

Response Time Table  

Dell S2721DGF Response Time Table
Samsung Odyssey G5/G55C S27CG55 Response Time Table

Show text

CAD @ 120Hz 
 

5.3

Pursuit Photo 120Hz  

Dell S2721DGF Pursuit Photo 120Hz
Samsung Odyssey G5/G55C S27CG55 Pursuit Photo 120Hz

CAD Heatmap 120Hz  

Dell S2721DGF CAD Heatmap 120Hz
Samsung Odyssey G5/G55C S27CG55 CAD Heatmap 120Hz

OD Transition 120Hz 
 

od-transition-120-extreme-0-31
OD extreme
0 to 31

Recommended Overdrive Setting 
 

Extreme

Avg. CAD 
 

299

Best 10% CAD 
 

90

Worst 10% CAD 
 

688

Show text

Response Time @ 120Hz 
 

Worst 10% First Response Time 
 

5.4 ms
33.6 ms

RGB Overshoot 
 

0.6%
2 RGB

Total Response Time 
 

7.4 ms
14.5 ms

First Response Time 
 

4.2 ms
13.4 ms

Recommended Overdrive Setting 
 

Super Fast
Extreme

Worst 10% Total Response Time 
 

10.8 ms
33.6 ms

Worst 10% RGB Overshoot 
 

4.8%
13 RGB

120Hz First Response Heatmap  

Samsung Odyssey G5/G55C S27CG55 120Hz First Response Heatmap

120Hz Total Response Heatmap  

Samsung Odyssey G5/G55C S27CG55 120Hz Total Response Heatmap

120Hz Heatmap RGB Overshoot  

Samsung Odyssey G5/G55C S27CG55 120Hz Heatmap RGB Overshoot

Motion Blur Picture  

Dell S2721DGF Motion Blur Picture
Samsung Odyssey G5/G55C S27CG55 Motion Blur Picture

Response Time Table  

Dell S2721DGF Response Time Table
Samsung Odyssey G5/G55C S27CG55 Response Time Table

Show text

CAD @ 60Hz 
 

5.4

Pursuit Photo 60Hz  

Dell S2721DGF Pursuit Photo 60Hz
Samsung Odyssey G5/G55C S27CG55 Pursuit Photo 60Hz

CAD Heatmap 60Hz  

Samsung Odyssey G5/G55C S27CG55 CAD Heatmap 60Hz

OD Transition 60Hz 
 

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

Recommended Overdrive Setting 
 

Extreme

Avg. CAD 
 

290

Best 10% CAD 
 

89

Worst 10% CAD 
 

653

Show text

Response Time @ 60Hz 
 

Recommended Overdrive Setting 
 

Fast
Extreme

First Response Time 
 

4.8 ms
12.6 ms

Total Response Time 
 

11.6 ms
13.8 ms

RGB Overshoot 
 

1.0%
2 RGB

Worst 10% Total Response Time 
 

20.2 ms
29.6 ms

Worst 10% First Response Time 
 

6.5 ms
29.6 ms

Worst 10% RGB Overshoot 
 

5.3%
13 RGB

60Hz First Response Heatmap  

Samsung Odyssey G5/G55C S27CG55 60Hz First Response Heatmap

60Hz Total Response Heatmap  

Samsung Odyssey G5/G55C S27CG55 60Hz Total Response Heatmap

60Hz RGB Overshoot Heatmap  

Samsung Odyssey G5/G55C S27CG55 60Hz RGB Overshoot Heatmap

Show text

Backlight Strobing (BFI) 
 

Backlight Strobing Picture  

Dell S2721DGF Backlight Strobing Picture
Samsung Odyssey G5/G55C S27CG55 Backlight Strobing Picture

Backlight Strobing Frequency Picture  

Dell S2721DGF Backlight Strobing Frequency Picture
Samsung Odyssey G5/G55C S27CG55 Backlight Strobing Frequency Picture

Backlight Strobing (BFI) 
 

No BFI
Yes

Maximum Frequency 
 

N/A
165 Hz

Minimum Frequency 
 

N/A
165 Hz

Longest Pulse Width Brightness 
 

N/A
120 cd/m²

Shortest Pulse Width Brightness 
 

N/A
120 cd/m²

Pulse Width Control 
 

No BFI
No

Pulse Phase Control 
 

No BFI
No

Pulse Amplitude Control 
 

No BFI
No

VRR At The Same Time 
 

No BFI
No

Show text

VRR Flicker 
 

4.0

VRR Flicker Video  

VRR Flicker Graph  

Samsung Odyssey G5/G55C S27CG55 VRR Flicker Graph

Dark Gray Flicker 
 

3.3 RGB

Middle Gray Flicker 
 

4.0 RGB

Light Gray Flicker 
 

2.9 RGB

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Image Flicker 
 

10
10

Backlight Picture  

Dell S2721DGF Backlight Picture
Samsung Odyssey G5/G55C S27CG55 Backlight Picture

Flicker-Free 
 

Yes
Yes

PWM Dimming Frequency 
 

>1000 Hz
0 Hz

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Inputs

Input Lag 
 

9.0
7.6

Native Resolution @ Max Hz 
 

3.7 ms
12.9 ms

Native Resolution @ 120Hz 
 

4.8 ms
5.0 ms

Native Resolution @ 60Hz 
 

11.1 ms
25.4 ms

Backlight Strobing (BFI) 
 

N/A
16.0 ms

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Resolution 
 

8.0
7.5

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

Measured Screen Diagonal 
 

27.0"

Screen Area 
 

310 in²

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PS5 Compatibility 
 

5.0
4.9

PS5 Compatibility Photo  

Dell S2721DGF PS5 Compatibility Photo
Samsung Odyssey G5/G55C S27CG55 PS5 Compatibility Photo

PS5 Compatibility Table  

Samsung Odyssey G5/G55C S27CG55 PS5 Compatibility Table

4k @ 120Hz 
 

No
No

4k @ 60Hz 
 

No
Yes

1440p @ 120Hz 
 

Yes
Yes

1440p @ 60Hz 
 

Yes
Yes

1080p @ 120Hz 
 

Yes
Yes

1080p @ 60Hz 
 

Yes
Yes

HDR 
 

Yes

VRR 
 

No

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Xbox Series X|S Compatibility 
 

5.8
6.6

XSX Compatibility Photo  

Dell S2721DGF XSX Compatibility Photo
Samsung Odyssey G5/G55C S27CG55 XSX Compatibility Photo

XSX Compatibility Table  

Samsung Odyssey G5/G55C S27CG55 XSX Compatibility Table

4k @ 120Hz 
 

No
No

4k @ 60Hz 
 

No
Yes

1440p @ 120Hz 
 

Yes
Yes

1440p @ 60Hz 
 

Yes
Yes

1080p @ 120Hz 
 

Yes
Yes

1080p @ 60Hz 
 

Yes
Yes

HDR 
 

No

VRR 
 

Yes

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Inputs Photos  

Inputs 1  

Dell S2721DGF Inputs 1
Samsung Odyssey G5/G55C S27CG55 Inputs 1

Inputs 2  

Dell S2721DGF Inputs 2
Samsung Odyssey G5/G55C S27CG55 Inputs 2

Video And Audio Ports 
 

DisplayPort 
 

1 (DP 1.4)
1 (DP 1.2)

Mini DisplayPort 
 

No
No

HDMI 
 

2 (HDMI 2.0)
1 (HDMI 2.0)

HDMI 2.1 Rated Speed 
 

No HDMI 2.1
No HDMI 2.1

DVI 
 

No
No

VGA 
 

No
No

Daisy Chaining 
 

No
No

3.5mm Audio Out 
 

2
1

HDR10 
 

Yes
Yes

3.5mm Audio In 
 

No
No

3.5mm Microphone In 
 

No
No

USB 
 

USB-A Ports 
 

4
1 (Service Port Only)

USB-A Rated Speed 
 

5Gbps (USB 3.2 Gen 1)
480Mbps (USB 2.0)

USB-B Upstream Port 
 

Yes
No

USB-C Ports 
 

0
0

USB-C Upstream 
 

No USB-C Ports
No USB-C Ports

USB-C Rated Speed 
 

No USB-C Ports
No USB-C Ports

USB-C Power Delivery 
 

No USB-C Ports
No USB-C Ports

USB-C DisplayPort Alt Mode 
 

No USB-C Ports
No USB-C Ports

Thunderbolt 
 

No
No

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macOS Compatibility 
 

macOS Screenshot  

Dell S2721DGF macOS Screenshot
Samsung Odyssey G5/G55C S27CG55 macOS Screenshot

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Features

Additional Features 
 

Speakers 
 

No
No

RGB Illumination 
 

Fixed (On/Off)
No

Multiple Input Display 
 

No
No

KVM Switch 
 

No
No

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On-Screen Display (OSD) 
 

OSD Picture  

Dell S2721DGF OSD Picture
Samsung Odyssey G5/G55C S27CG55 OSD Picture

Check Price

 
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