Products
Dell S2721DGF
Samsung Odyssey G55T C27G55T
Tested using Methodology v1.2
Updated Aug 28, 2025 04:57 PM
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Amazon.com
Tested using Methodology v1.2
Updated Jun 13, 2025 08:56 PM
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Amazon.com
Max Refresh Rate
165 Hz
Size
27"
Pixel Type
IPS
Variable Refresh Rate
Yes
HDR10
Yes
Native Resolution
2560 x 1440
Max Refresh Rate
144 Hz
Size
27"
Pixel Type
VA
Variable Refresh Rate
Yes
HDR10
Yes
Native Resolution
2560 x 1440
Our Verdict
Dell S2721DGF
Samsung Odyssey G55T C27G55T
The Dell S2721DGF is much better than the Samsung Odyssey G55T C27G55T overall. The Dell has better gaming performance due to its higher refresh rate, faster response time, and lower input lag. It also has wider viewing angles, higher peak brightness, and significantly better ergonomics. However, the Samsung's VA panel has a better contrast ratio, and it has a Black Frame Insertion feature to improve motion clarity.
Variants
- S2721DGF (27")
- LC27G55TQWNXZA (27")
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27"
S2721DGF
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27"
LC27G55TQWNXZA
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Amazon.com
27"
S2721DGF
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Walmart.com
27"
LC27G55TQWNXZA
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27"
S2721DGF
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27"
LC27G55TQWNXZA
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27"
S2721DGF
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LC27G55TQWNXZA
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27"
LC27G55TQWNXZA
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Main Differences for
Mixed Usage
Mixed Usage
Threshold
Mixed Usage
7.7
6.7
Ergonomics
9.2
1.7
Image Flicker
10
2.0
Response Time @ Max Refresh Rate
9.0
4.7
Horizontal Viewing Angle
8.5
5.4
Full Comparison
Design
Style
Design Picture
Curved
No
Yes
Curve Radius
Not Curved
1000R
Accelerated Longevity Test
Uniformity Pictures
Longevity Graph
Build Quality
8.0
7.0
Build Quality Picture
Ergonomics
9.2
1.7
Ergonomics Picture
Back Picture
Height Adjustment
5.1" (13.0 cm)
0.0" (0.0 cm)
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
Stand
Stand Picture
Thickness Picture
Base Width
10.9" (27.6 cm)
21.7" (55.0 cm)
Base Depth
7.9" (20.0 cm)
10.8" (27.5 cm)
Thickness (With Display)
6.3" (16.0 cm)
9.4" (24.0 cm)
Weight (With Display)
14.6 lbs (6.6 kg)
9.9 lbs (4.5 kg)
Display
Display Picture
Size
27"
27"
Housing Width
24.1" (61.2 cm)
24.2" (61.4 cm)
Housing Height
14.2" (36.1 cm)
15.1" (38.3 cm)
Thickness (Without Stand)
2.6" (6.5 cm)
4.7" (12.0 cm)
Weight (Without Stand)
9.9 lbs (4.5 kg)
9.7 lbs (4.4 kg)
Borders Size (Bezels)
0.3" (0.7 cm)
0.5" (1.2 cm)
Controls
Controls Picture
In The Box
In The Box Picture
Power Supply
Internal
External Brick
Picture Quality
Contrast
5.8
7.9
Checkerboard Picture
Native Contrast
882 : 1
2,997 : 1
Contrast With Local Dimming
971 : 1
N/A
Local Dimming
1.0
0.0
Local Dimming Video
Local Dimming
Yes
No
Backlight
Edge
Edge
SDR Brightness
8.0
7.2
Real Scene
341 cd/m²
285 cd/m²
Peak 2% Window
364 cd/m²
150 cd/m²
Peak 10% Window
367 cd/m²
281 cd/m²
Peak 25% Window
368 cd/m²
281 cd/m²
Peak 50% Window
368 cd/m²
281 cd/m²
Peak 100% Window
368 cd/m²
281 cd/m²
Sustained 2% Window
364 cd/m²
150 cd/m²
Sustained 10% Window
367 cd/m²
281 cd/m²
Sustained 25% Window
368 cd/m²
281 cd/m²
Sustained 50% Window
368 cd/m²
281 cd/m²
Sustained 100% Window
368 cd/m²
281 cd/m²
Automatic Brightness Limiting (ABL)
0.001
0.044
Minimum Brightness
35 cd/m²
37 cd/m²
HDR Brightness
6.6
5.9
EOTF
VESA DisplayHDR Certification
DisplayHDR 400 - 1.0/1.1
No Certification
Real Scene
328 cd/m²
298 cd/m²
Peak 2% Window
481 cd/m²
159 cd/m²
Peak 10% Window
485 cd/m²
297 cd/m²
Peak 25% Window
486 cd/m²
297 cd/m²
Peak 50% Window
487 cd/m²
297 cd/m²
Peak 100% Window
487 cd/m²
297 cd/m²
Sustained 2% Window
480 cd/m²
158 cd/m²
Sustained 10% Window
484 cd/m²
296 cd/m²
Sustained 25% Window
484 cd/m²
297 cd/m²
Sustained 50% Window
486 cd/m²
297 cd/m²
Sustained 100% Window
486 cd/m²
297 cd/m²
Automatic Brightness Limiting (ABL)
0.003
0.043
Horizontal Viewing Angle
8.5
5.4
Horizontal Viewing Angle Video
Horizontal Chroma Graph
Color Washout From Left
46°
29°
Color Washout From Right
47°
29°
Horizontal Hue Graph
Color Shift From Left
52°
39°
Color Shift From Right
55°
42°
Horizontal Lightness Graph
Brightness Loss From Left
48°
30°
Brightness Loss From Right
49°
30°
Black Level Raise From Left
70°
12°
Black Level Raise From Right
70°
14°
Gamma Shift From Left
60°
12°
Gamma Shift From Right
61°
15°
Vertical Viewing Angle
6.2
4.9
Vertical Viewing Angle Video
Vertical Chroma Graph
Color Washout From Below
32°
25°
Color Washout From Above
33°
26°
Vertical Hue Graph
Color Shift From Below
31°
25°
Color Shift From Above
34°
29°
Vertical Lightness Graph
Brightness Loss From Below
36°
28°
Brightness Loss From Above
37°
29°
Black Level Raise From Below
32°
6°
Black Level Raise From Above
22°
9°
Gamma Shift From Below
30°
12°
Gamma Shift From Above
30°
15°
Gray Uniformity
8.0
8.7
50% Uniformity Picture
50% Std. Dev.
3.975%
1.852%
50% DSE
0.132%
0.119%
Black Uniformity
3.9
3.5
Native Black Uniformity Picture
Native Std. Dev.
2.946%
3.691%
Black Uniformity Picture With Local Dimming
Std. Dev. w/ L.D.
7.261%
N/A
Color Accuracy (Pre-Calibration)
5.9
9.0
Pre Calibration Picture
Pre Gamma Curve Picture
Pre Color Picture
Picture Mode
Standard
Custom
sRGB Gamut Area xy
137.7%
101.1%
White Balance dE (Avg.)
3.43
1.74
Color Temperature (Avg.)
6,929 K
6,747 K
Gamma (Avg.)
2.13
2.08
Color dE (Avg.)
3.55
2.16
Contrast Setting
75
75
RGB Settings
Default
50-50-50
Gamma Setting
No Gamma Setting
Mode 1
Brightness Setting
75
55
Measured Brightness
223 cd/m²
191 cd/m²
Brightness Locked
No
No
Color Accuracy (Post-Calibration)
9.8
9.3
Post Calibration Picture
Post Gamma Curve Picture
Post Color Picture
Picture Mode
Custom Color
Custom
sRGB Gamut Area xy
100.7%
95.0%
White Balance dE (Avg.)
0.54
0.51
Color Temperature (Avg.)
6,504 K
6,472 K
Gamma (Avg.)
2.17
2.19
Color dE (Avg.)
0.34
0.84
Contrast Setting
73
75
RGB Settings
100-96-97
52-49-48
Gamma Setting
No Gamma Setting
Mode 1
Brightness Setting
30
26
Measured Brightness
99 cd/m²
100 cd/m²
SDR Color Gamut
9.4
8.5
sRGB Color Gamut Picture
sRGB Coverage xy
99.6%
95.5%
sRGB Picture Mode
Custom Color
Custom
Adobe RGB Color Gamut Picture
Adobe RGB Coverage xy
84.5%
73.2%
Adobe RGB Picture Mode
Custom Color
Custom
SDR Color Volume
9.6
7.7
sRGB Color Volume ITP Picture
sRGB In ICtCp
97.5%
79.7%
sRGB Picture Mode
Custom Color
Custom
Adobe RGB Color Volume ITP Picture
Adobe RGB In ICtCp
89.5%
67.4%
Adobe RGB Picture Mode
Custom Color
Custom
HDR Color Gamut
9.1
5.9
Wide Color Gamut
Yes
No
DCI-P3 Color Gamut Picture
DCI-P3 Coverage xy
97.2%
74.7%
DCI-P3 Picture Mode
Desktop
Custom
Rec. 2020 Color Gamut Picture
Rec. 2020 Coverage xy
72.8%
51.9%
Rec. 2020 Picture Mode
Desktop
Custom
HDR Color Volume
8.8
5.4
DCI-P3 Color Volume ITP Picture
DCI-P3 In ICtCp
89.8%
55.3%
DCI-P3 Picture Mode
Desktop
Custom
Rec. 2020 Color Volume ITP Picture
Rec. 2020 In ICtCp
71.0%
42.2%
Rec. 2020 Picture Mode
Desktop
Custom
Reflections
8.1
7.8
Average Room
Average Room Off Picture
Bright Room Off Picture
Screen Finish
Matte
Matte
Total Reflections
4.4%
5.2%
Indirect Reflections
3.0%
3.6%
Calculated Direct Reflections
1.5%
1.5%
Text Clarity
7.5
7.0
ClearType On
ClearType Off
Pixel Type
IPS
VA
Pixels
Subpixel Layout
RGB
RGB
Gradient
9.7
9.8
Gradient Picture
Color Depth
10 Bit
10 Bit
Motion
Refresh Rate
8.5
8.3
Native Refresh Rate
165 Hz
144 Hz
Max Refresh Rate
165 Hz
144 Hz
Max Refresh Rate Over DP
165 Hz
144 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
Variable Refresh Rate (VRR)
FreeSync
Yes
Yes
G-SYNC
Compatible (NVIDIA Certified)
Compatible (Tested)
VRR Maximum
165 Hz
144 Hz
VRR Minimum
< 20 Hz
< 20 Hz
VRR Supported Connectors
DisplayPort, HDMI
DisplayPort, HDMI
Variable Refresh Rate
Yes
Yes
Response Time @ Max Refresh Rate
9.0
4.7
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
Extreme
FreeSync On
Rise / Fall Time
3.5 ms
11.6 ms
Total Response Time
6.3 ms
21.9 ms
Overshoot Error
1.9%
0.0%
Worst 3 Rise / Fall Time
4.2 ms
23.2 ms
Worst 3 Total Response Time
10.6 ms
38.6 ms
Worst 3 Overshoot Error
14.7%
0.0%
Response Time @ 120Hz
8.8
4.5
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
Super Fast
FreeSync On
Rise / Fall Time
4.2 ms
12.3 ms
Total Response Time
7.4 ms
22.9 ms
Overshoot Error
0.6%
0.0%
Worst 3 Rise / Fall Time
5.4 ms
23.3 ms
Worst 3 Total Response Time
10.8 ms
38.7 ms
Worst 3 Overshoot Error
4.8%
0.0%
Response Time @ 60Hz
8.0
2.6
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
Fast
FreeSync On
Rise / Fall Time
4.8 ms
18.2 ms
Total Response Time
11.6 ms
33.3 ms
Overshoot Error
1.0%
0.0%
Worst 3 Rise / Fall Time
6.5 ms
28.3 ms
Worst 3 Total Response Time
20.2 ms
49.7 ms
Worst 3 Overshoot Error
5.3%
0.0%
Backlight Strobing (BFI)
Backlight Strobing Picture
Backlight Strobing Frequency Picture
Backlight Strobing (BFI)
No BFI
Yes
Maximum Frequency
N/A
144 Hz
Minimum Frequency
N/A
144 Hz
Longest Pulse Width Brightness
N/A
147 cd/m²
Shortest Pulse Width Brightness
N/A
147 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
Image Flicker
10
2.0
Backlight Picture
Flicker-Free
Yes
No
PWM Dimming Frequency
>1000 Hz
144 Hz
Inputs
Input Lag
9.0
8.8
Native Resolution @ Max Hz
3.7 ms
4.5 ms
Native Resolution @ 120Hz
4.8 ms
5.2 ms
Native Resolution @ 60Hz
11.1 ms
9.2 ms
Backlight Strobing (BFI)
N/A
4.4 ms
Resolution And Size
8.0
8.0
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"
27.0"
Screen Area
310 in²
310 in²
PS5 Compatibility
5.0
7.0
PS5 Compatibility Photo
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
Yes
VRR
No
No
Xbox Series X|S Compatibility
5.8
9.2
XSX Compatibility Photo
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
Yes
VRR
Yes
Yes
Inputs Photos
Inputs 1
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
macOS Compatibility
macOS Screenshot
Features
Additional Features
Speakers
No
Yes
RGB Illumination
Fixed (On/Off)
No
Multiple Input Display
No
No
KVM Switch
No
No
On-Screen Display (OSD)
OSD Picture
Check Price
27"
S2721DGF
SEE PRICE
Amazon.com
27"
LC27G55TQWNXZA
SEE PRICE
Amazon.com
27"
S2721DGF
SEE PRICE
Walmart.com
27"
LC27G55TQWNXZA
SEE PRICE
BestBuy.com
27"
S2721DGF
SEARCH
B&H
27"
LC27G55TQWNXZA
SEE PRICE
Walmart.com
27"
S2721DGF
SEARCH
BestBuy.com
27"
LC27G55TQWNXZA
SEARCH
B&H
27"
LC27G55TQWNXZA
SEARCH
Samsung.com
Dell S2721DGF
Samsung Odyssey G55T C27G55T
Comments
Dell S2721DGF vs Samsung Odyssey G55T C27G55T: Main Discussion
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