Products
Samsung C27RG5
Dell S2721DGF
Tested using Methodology v1.1
Updated Jun 07, 2024 06:14 PM
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Amazon.com
Tested using Methodology v1.2
Updated Aug 28, 2025 04:57 PM
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Amazon.com
Max Refresh Rate
240 Hz
Size
27"
Pixel Type
VA
Variable Refresh Rate
Adaptive Sync
HDR10
No
Native Resolution
1920 x 1080
Max Refresh Rate
165 Hz
Size
27"
Pixel Type
IPS
Variable Refresh Rate
Yes
HDR10
Yes
Native Resolution
2560 x 1440
Our Verdict
Samsung C27RG5
Dell S2721DGF
The Dell S2721DGF is much better than the Samsung C27RG5. The Dell has a much faster response time, so motion in games looks much better, with almost no noticeable blur behind fast-moving objects. The Dell also has much better ergonomics and a higher resolution screen.
Variants
- C27RG5 (27")
- S2721DGF (27")
Check Price
27"
C27RG5
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Amazon.com
27"
S2721DGF
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Amazon.com
27"
C27RG5
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BestBuy.com
27"
S2721DGF
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Walmart.com
27"
C27RG5
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Walmart.com
27"
S2721DGF
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B&H
27"
C27RG5
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B&H
27"
S2721DGF
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27"
C27RG5
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Samsung.com
27"
S2721DGF
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Dell
Main Differences for
Mixed Usage
Mixed Usage
Threshold
Mixed Usage
6.7
7.7
Ergonomics
1.1
9.2
Response Time @ Max Refresh Rate
3.3
9.0
Horizontal Viewing Angle
6.0
8.5
Resolution And Size
7.1
8.0
Black Uniformity
7.1
3.9
HDR Color Gamut
0.0
9.1
HDR Color Volume
0.0
8.8
Contrast
8.0
5.8
Response Time @ 60Hz
3.5
8.0
Full Comparison
Design
Style
Design Picture
Curved
Yes
No
Curve Radius
1500R
Not Curved
Size
27"
27"
Weight (without stand)
8.4 lbs (3.8 kg)
9.9 lbs (4.5 kg)
Weight (with stand)
10.1 lbs (4.6 kg)
14.6 lbs (6.6 kg)
Accelerated Longevity Test
Uniformity Pictures
Longevity Graph
Build Quality
6.5
8.0
Build Quality Picture
Ergonomics
1.1
9.2
Ergonomics Picture
Back Picture
Height Adjustment
0.0" (0.0 cm)
5.1" (13.0 cm)
Tilt Range
-15° to 2.5°
-20° to 5°
Rotate Portrait/Landscape
No
Yes, Both Ways
Swivel Range
No swivel
-45° to 45°
Wall Mount
VESA 75x75
VESA 100x100
Stand
Stand Picture
Thickness Picture
Base Width
18.5" (47.1 cm)
10.9" (27.6 cm)
Base Depth
9.8" (24.9 cm)
7.9" (20.0 cm)
Thickness (With Display)
8.6" (21.9 cm)
6.3" (16.0 cm)
Weight (With Display)
10.1 lbs (4.6 kg)
14.6 lbs (6.6 kg)
Display
Display Picture
Size
27"
27"
Housing Width
24.1" (61.2 cm)
Housing Height
14.2" (36.1 cm)
Thickness (Without Stand)
3.4" (8.6 cm)
2.6" (6.5 cm)
Weight (Without Stand)
8.4 lbs (3.8 kg)
9.9 lbs (4.5 kg)
Borders Size (Bezels)
0.4" (0.9 cm)
0.3" (0.7 cm)
Controls
Controls Picture
In The Box
In The Box Picture
Power Supply
External Brick
Internal
Back
Back Picture
Wall Mount
VESA 75x75
VESA 100x100
Borders
Borders Picture
Borders
0.4" (0.9 cm)
0.3" (0.7 cm)
Thickness
Thickness Picture
Thickness (with stand)
8.6" (21.9 cm)
6.3" (16.0 cm)
Thickness (without stand)
3.4" (8.6 cm)
2.6" (6.5 cm)
Picture Quality
Contrast
8.0
5.8
Checkerboard Picture
Native Contrast
3,305 : 1
882 : 1
Contrast With Local Dimming
N/A
971 : 1
Local Dimming
0.0
1.0
Local Dimming Video
Local Dimming
No
Yes
Backlight
Edge
Edge
SDR Brightness
7.5
8.0
Real Scene
302 cd/m²
341 cd/m²
Peak 2% Window
299 cd/m²
364 cd/m²
Peak 10% Window
299 cd/m²
367 cd/m²
Peak 25% Window
300 cd/m²
368 cd/m²
Peak 50% Window
299 cd/m²
368 cd/m²
Peak 100% Window
299 cd/m²
368 cd/m²
Sustained 2% Window
299 cd/m²
364 cd/m²
Sustained 10% Window
299 cd/m²
367 cd/m²
Sustained 25% Window
299 cd/m²
368 cd/m²
Sustained 50% Window
299 cd/m²
368 cd/m²
Sustained 100% Window
299 cd/m²
368 cd/m²
Automatic Brightness Limiting (ABL)
0.000
0.001
Minimum Brightness
35 cd/m²
HDR Brightness
0.0
6.6
EOTF
VESA DisplayHDR Certification
DisplayHDR 400 - 1.0/1.1
Real Scene
N/A
328 cd/m²
Peak 2% Window
N/A
481 cd/m²
Peak 10% Window
N/A
485 cd/m²
Peak 25% Window
N/A
486 cd/m²
Peak 50% Window
N/A
487 cd/m²
Peak 100% Window
N/A
487 cd/m²
Sustained 2% Window
N/A
480 cd/m²
Sustained 10% Window
N/A
484 cd/m²
Sustained 25% Window
N/A
484 cd/m²
Sustained 50% Window
N/A
486 cd/m²
Sustained 100% Window
N/A
486 cd/m²
Automatic Brightness Limiting (ABL)
N/A
0.003
Horizontal Viewing Angle
6.0
8.5
Horizontal Viewing Angle Video
Horizontal Chroma Graph
Color Washout From Left
29°
46°
Color Washout From Right
31°
47°
Horizontal Hue Graph
Color Shift From Left
54°
52°
Color Shift From Right
56°
55°
Horizontal Lightness Graph
Brightness Loss From Left
34°
48°
Brightness Loss From Right
35°
49°
Black Level Raise From Left
12°
70°
Black Level Raise From Right
13°
70°
Gamma Shift From Left
20°
60°
Gamma Shift From Right
21°
61°
Vertical Viewing Angle
5.7
6.2
Vertical Viewing Angle Video
Vertical Chroma Graph
Color Washout From Below
28°
32°
Color Washout From Above
27°
33°
Vertical Hue Graph
Color Shift From Below
51°
31°
Color Shift From Above
55°
34°
Vertical Lightness Graph
Brightness Loss From Below
31°
36°
Brightness Loss From Above
30°
37°
Black Level Raise From Below
11°
32°
Black Level Raise From Above
9°
22°
Gamma Shift From Below
18°
30°
Gamma Shift From Above
19°
30°
Gray Uniformity
8.7
8.0
50% Uniformity Picture
50% Std. Dev.
3.218%
3.975%
50% DSE
0.097%
0.132%
5% Uniformity Picture
5% Std. Dev.
0.539%
5% DSE
0.060%
Black Uniformity
7.1
3.9
Native Black Uniformity Picture
Native Std. Dev.
1.276%
2.946%
Black Uniformity Picture With Local Dimming
Std. Dev. w/ L.D.
N/A
7.261%
Color Accuracy (Pre-Calibration)
7.5
5.9
Pre Calibration Picture
Pre Gamma Curve Picture
Pre Color Picture
Picture Mode
Custom
Standard
sRGB Gamut Area xy
137.7%
White Balance dE (Avg.)
3.26
3.43
Color Temperature (Avg.)
6,289 K
6,929 K
Gamma (Avg.)
2.09
2.13
Color dE (Avg.)
2.67
3.55
Contrast Setting
75
75
RGB Settings
50-50-50
Default
Gamma Setting
Mode 1
No Gamma Setting
Brightness Setting
100
75
Measured Brightness
312 cd/m²
223 cd/m²
Brightness Locked
No
Color Accuracy (Post-Calibration)
9.5
9.8
Post Calibration Picture
Post Gamma Curve Picture
Post Color Picture
Picture Mode
Custom
Custom Color
sRGB Gamut Area xy
100.7%
White Balance dE (Avg.)
0.51
0.54
Color Temperature (Avg.)
6,486 K
6,504 K
Gamma (Avg.)
2.18
2.17
Color dE (Avg.)
0.78
0.34
Contrast Setting
70
73
RGB Settings
47-53-52
100-96-97
Gamma Setting
Mode 1
No Gamma Setting
Brightness Setting
19
30
Measured Brightness
100 cd/m²
99 cd/m²
ICC Profile
SDR Color Gamut
8.6
9.4
sRGB Color Gamut Picture
sRGB Coverage xy
95.2%
99.6%
sRGB Picture Mode
Custom
Custom Color
Adobe RGB Color Gamut Picture
Adobe RGB Coverage xy
76.4%
84.5%
Adobe RGB Picture Mode
Custom
Custom Color
SDR Color Volume
9.0
9.6
sRGB Color Volume ITP Picture
sRGB In ICtCp
97.3%
97.5%
sRGB Picture Mode
Custom
Custom Color
Adobe RGB Color Volume ITP Picture
Adobe RGB In ICtCp
82.0%
89.5%
Adobe RGB Picture Mode
Custom
Custom Color
HDR Color Gamut
0.0
9.1
Wide Color Gamut
N/A
Yes
DCI-P3 Color Gamut Picture
DCI-P3 Coverage xy
97.2%
DCI-P3 Picture Mode
No HDR
Desktop
Rec. 2020 Color Gamut Picture
Rec. 2020 Coverage xy
N/A
72.8%
Rec. 2020 Picture Mode
No HDR
Desktop
DCI P3 xy
N/A
HDR Color Volume
0.0
8.8
DCI-P3 Color Volume ITP Picture
DCI-P3 In ICtCp
N/A
89.8%
DCI-P3 Picture Mode
No HDR
Desktop
Rec. 2020 Color Volume ITP Picture
Rec. 2020 In ICtCp
N/A
71.0%
Rec. 2020 Picture Mode
No HDR
Desktop
Image Retention
9.0
Image Retention Picture
IR After 0 Min Recovery
0.37%
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%
Reflections
7.5
8.1
Average Room
Average Room Off Picture
Bright Room Off Picture
Screen Finish
Matte
Matte
Total Reflections
5.4%
4.4%
Indirect Reflections
3.2%
3.0%
Calculated Direct Reflections
2.2%
1.5%
Text Clarity
6.5
7.5
ClearType On
ClearType Off
Pixel Type
VA
IPS
Pixels
Subpixel Layout
RGB
RGB
Gradient
7.9
9.7
Gradient Picture
Color Depth
8 Bit
10 Bit
Color Bleed
10
Color Bleed Horizontal
Pixel Row Error
0.001%
Color Bleed Vertical
Pixel Column Error
0.002%
Motion
Refresh Rate
8.5
Native Refresh Rate
240 Hz
165 Hz
Max Refresh Rate
240 Hz
165 Hz
Max Refresh Rate Over DP
165 Hz
Max Refresh Rate Over HDMI
144 Hz
Max Refresh Rate Over DP @ 10-bit
165 Hz
Max Refresh Rate Over HDMI @ 10-Bit
60 Hz
Variable Refresh Rate (VRR)
FreeSync
Compatible (Tested)
Yes
G-SYNC
Compatible (NVIDIA Certified)
Compatible (NVIDIA Certified)
VRR Maximum
240 Hz
165 Hz
VRR Minimum
< 20 Hz
< 20 Hz
VRR Supported Connectors
DisplayPort
DisplayPort, HDMI
Variable Refresh Rate
Adaptive Sync
Yes
Native
240 Hz
165 Hz
Max Refresh Rate
240 Hz
165 Hz
Variable Refresh Rate
Yes
Response Time @ Max Refresh Rate
3.3
9.0
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
Adaptive Sync
Extreme
Rise / Fall Time
13.7 ms
3.5 ms
Total Response Time
34.5 ms
6.3 ms
Overshoot Error
0.1%
1.9%
Worst 3 Rise / Fall Time
25.3 ms
4.2 ms
Worst 3 Total Response Time
44.3 ms
10.6 ms
Worst 3 Overshoot Error
0.0%
14.7%
Response Time @ 120Hz
8.8
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
Super Fast
Rise / Fall Time
4.2 ms
Total Response Time
7.4 ms
Overshoot Error
0.6%
Worst 3 Rise / Fall Time
5.4 ms
Worst 3 Total Response Time
10.8 ms
Worst 3 Overshoot Error
4.8%
Response Time @ 60Hz
3.5
8.0
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
Adaptive Sync
Fast
Rise / Fall Time
13.3 ms
4.8 ms
Total Response Time
33.8 ms
11.6 ms
Overshoot Error
0.1%
1.0%
Worst 3 Rise / Fall Time
24.6 ms
6.5 ms
Worst 3 Total Response Time
42.5 ms
20.2 ms
Worst 3 Overshoot Error
0.0%
5.3%
Backlight Strobing (BFI)
Backlight Strobing Picture
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
Image Flicker
10
10
Backlight Picture
Flicker-Free
Yes
Yes
PWM Dimming Frequency
>1000 Hz
>1000 Hz
Inputs
Input Lag
9.5
9.0
Native Resolution @ Max Hz
3.3 ms
3.7 ms
Native Resolution @ 120Hz
4.8 ms
Native Resolution @ 60Hz
21.7 ms
11.1 ms
Variable Refresh Rate
4.6 ms
Variable Refresh Rate @ 60Hz
21.5 ms
10 Bit HDR
N/A
Backlight Strobing (BFI)
N/A
N/A
Resolution And Size
7.1
8.0
Native Resolution
1920 x 1080
2560 x 1440
Aspect Ratio
16:9
16:9
Megapixels
2.1 MP
3.7 MP
Pixel Density
82 PPI
109 PPI
Measured Screen Diagonal
27.0"
27.0"
Screen Area
310 in²
310 in²
PS5 Compatibility
5.0
PS5 Compatibility Photo
4k @ 120Hz
No
4k @ 60Hz
No
1440p @ 120Hz
Yes
1440p @ 60Hz
Yes
1080p @ 120Hz
Yes
1080p @ 60Hz
Yes
HDR
Yes
VRR
No
Xbox Series X|S Compatibility
5.8
XSX Compatibility Photo
4k @ 120Hz
No
4k @ 60Hz
No
1440p @ 120Hz
Yes
1440p @ 60Hz
Yes
1080p @ 120Hz
Yes
1080p @ 60Hz
Yes
HDR
No
VRR
Yes
Inputs Photos
Inputs 1
Inputs 2
Video And Audio Ports
DisplayPort
1 (DP 1.2)
1 (DP 1.4)
Mini DisplayPort
No
No
HDMI
2 (HDMI 2.0)
2 (HDMI 2.0)
HDMI 2.1 Rated Speed
No HDMI 2.1
DVI
No
No
VGA
No
No
Daisy Chaining
No
3.5mm Audio Out
1
2
HDR10
No
Yes
3.5mm Audio In
No
3.5mm Microphone In
No
No
DisplayPort Out
No
USB
1 (USB 2.0)
4
USB C
No
0
Digital Optical Audio Out
No
Analog Audio Out RCA
No
Power Supply
External Brick
Internal
USB
USB-A Ports
1 (USB 2.0)
4
USB-A Rated Speed
5Gbps (USB 3.2 Gen 1)
USB-B Upstream Port
Yes
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
macOS Compatibility
macOS Screenshot
Features
Additional Features
Speakers
No
No
RGB Illumination
No
Fixed (On/Off)
Multiple Input Display
No
No
KVM Switch
No
HDR10
No
Yes
On-Screen Display (OSD)
OSD Picture
Controls
Controls Picture
In The Box
In The Box Picture
Check Price
27"
C27RG5
SEE PRICE
Amazon.com
27"
S2721DGF
SEE PRICE
Amazon.com
27"
C27RG5
SEE PRICE
BestBuy.com
27"
S2721DGF
SEE PRICE
Walmart.com
27"
C27RG5
SEE PRICE
Walmart.com
27"
S2721DGF
SEARCH
B&H
27"
C27RG5
SEARCH
B&H
27"
S2721DGF
SEARCH
BestBuy.com
27"
C27RG5
SEARCH
Samsung.com
27"
S2721DGF
SEARCH
Dell
Samsung C27RG5
Dell S2721DGF
Comments
Samsung C27RG5 vs Dell S2721DGF: Main Discussion
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