Products
Dell Alienware AW2720HF
Samsung Odyssey G4/G40B S27BG40
Tested using Methodology v1.1
Updated Jun 07, 2024 07:16 PM
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Amazon.com
Tested using Methodology v1.2
Updated Aug 28, 2025 04:58 PM
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Max Refresh Rate
240 Hz
Size
27"
Pixel Type
IPS
Variable Refresh Rate
FreeSync
HDR10
No
Native Resolution
1920 x 1080
Max Refresh Rate
240 Hz
Size
27"
Pixel Type
IPS
Variable Refresh Rate
Yes
HDR10
Yes
Native Resolution
1920 x 1080
Our Verdict
Dell Alienware AW2720HF
Samsung Odyssey G4/G40B S27BG40
The Dell Alienware AW2720HF and the Samsung Odyssey G4/G40B S27BG40 are both 240Hz monitors with a 1080p resolution, but the Dell is better overall. The main difference is that the Dell has a faster response time with high-frame-rate signals, so motion looks smoother. The Dell also has a USB hub, which is great if you want to connect your peripherals. On the other hand, the Samsung is better for well-lit rooms as it gets a bit brighter and has slightly better reflection handling.
Variants
- Alienware AW2720HF (27")
- LS27BG402ENXGO (27")
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27"
Alienware AW2720HF
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27"
LS27BG402ENXGO
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27"
Alienware AW2720HF
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27"
LS27BG402ENXGO
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27"
Alienware AW2720HF
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27"
LS27BG402ENXGO
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27"
Alienware AW2720HF
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27"
LS27BG402ENXGO
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Samsung.com
27"
LS27BG402ENXGO
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Main Differences for
Mixed Usage
Mixed Usage
Threshold
Mixed Usage
7.5
7.3
Resolution And Size
7.1
6.5
Full Comparison
Design
Style
Design Picture
Curved
No
No
Curve Radius
Not Curved
Not Curved
Size
27"
27"
Weight (without stand)
10.1 lbs (4.6 kg)
7.8 lbs (3.5 kg)
Weight (with stand)
18.2 lbs (8.2 kg)
11.7 lbs (5.3 kg)
Accelerated Longevity Test
Uniformity Pictures
Longevity Graph
Build Quality
8.5
7.0
Build Quality Picture
Ergonomics
8.3
8.6
Ergonomics Picture
Back Picture
Height Adjustment
4.9" (12.5 cm)
4.7" (12.0 cm)
Tilt Range
-20° to 5°
-22.5° to 2.5°
Rotate Portrait/Landscape
Yes, Both Ways
Yes, Both Ways
Swivel Range
-30° to 30°
-15° to 15°
Wall Mount
VESA 100x100
VESA 100x100
Stand
Stand Picture
Thickness Picture
Base Width
18.3" (46.4 cm)
17.8" (45.1 cm)
Base Depth
10.0" (25.3 cm)
9.1" (23.0 cm)
Thickness (With Display)
8.9" (22.5 cm)
6.7" (17.1 cm)
Weight (With Display)
18.2 lbs (8.2 kg)
11.7 lbs (5.3 kg)
Display
Display Picture
Size
27"
27"
Housing Width
24.3" (61.7 cm)
Housing Height
14.9" (37.8 cm)
Thickness (Without Stand)
3.0" (7.6 cm)
2.2" (5.7 cm)
Weight (Without Stand)
10.1 lbs (4.6 kg)
7.8 lbs (3.5 kg)
Borders Size (Bezels)
0.3" (0.7 cm)
0.4" (0.9 cm)
Controls
Controls Picture
In The Box
In The Box Picture
Power Supply
Internal
External Brick
Back
Back Picture
Wall Mount
VESA 100x100
VESA 100x100
Borders
Borders Picture
Borders
0.3" (0.7 cm)
0.4" (0.9 cm)
Thickness
Thickness Picture
Thickness (with stand)
8.9" (22.5 cm)
6.7" (17.1 cm)
Thickness (without stand)
3.0" (7.6 cm)
2.2" (5.7 cm)
Picture Quality
Contrast
5.8
6.0
Checkerboard Picture
Native Contrast
877 : 1
1,006 : 1
Contrast With Local Dimming
N/A
N/A
Local Dimming
0.0
0.0
Local Dimming Video
Local Dimming
No
No
Backlight
Edge
Edge
SDR Brightness
7.8
8.0
Real Scene
326 cd/m²
356 cd/m²
Peak 2% Window
333 cd/m²
357 cd/m²
Peak 10% Window
335 cd/m²
361 cd/m²
Peak 25% Window
335 cd/m²
362 cd/m²
Peak 50% Window
335 cd/m²
362 cd/m²
Peak 100% Window
335 cd/m²
362 cd/m²
Sustained 2% Window
333 cd/m²
357 cd/m²
Sustained 10% Window
335 cd/m²
361 cd/m²
Sustained 25% Window
335 cd/m²
362 cd/m²
Sustained 50% Window
335 cd/m²
362 cd/m²
Sustained 100% Window
335 cd/m²
362 cd/m²
Automatic Brightness Limiting (ABL)
0.000
0.001
Minimum Brightness
57 cd/m²
HDR Brightness
0.0
6.6
EOTF
VESA DisplayHDR Certification
No Certification
Real Scene
N/A
386 cd/m²
Peak 2% Window
N/A
389 cd/m²
Peak 10% Window
N/A
393 cd/m²
Peak 25% Window
N/A
393 cd/m²
Peak 50% Window
N/A
394 cd/m²
Peak 100% Window
N/A
394 cd/m²
Sustained 2% Window
N/A
388 cd/m²
Sustained 10% Window
N/A
392 cd/m²
Sustained 25% Window
N/A
392 cd/m²
Sustained 50% Window
N/A
393 cd/m²
Sustained 100% Window
N/A
393 cd/m²
Automatic Brightness Limiting (ABL)
N/A
0.001
Horizontal Viewing Angle
8.4
8.3
Horizontal Viewing Angle Video
Horizontal Chroma Graph
Color Washout From Left
45°
45°
Color Washout From Right
47°
44°
Horizontal Hue Graph
Color Shift From Left
50°
49°
Color Shift From Right
53°
52°
Horizontal Lightness Graph
Brightness Loss From Left
47°
47°
Brightness Loss From Right
50°
47°
Black Level Raise From Left
70°
70°
Black Level Raise From Right
70°
70°
Gamma Shift From Left
55°
57°
Gamma Shift From Right
58°
56°
Vertical Viewing Angle
6.3
6.2
Vertical Viewing Angle Video
Vertical Chroma Graph
Color Washout From Below
29°
31°
Color Washout From Above
35°
31°
Vertical Hue Graph
Color Shift From Below
21°
22°
Color Shift From Above
37°
35°
Vertical Lightness Graph
Brightness Loss From Below
35°
37°
Brightness Loss From Above
39°
36°
Black Level Raise From Below
20°
21°
Black Level Raise From Above
52°
47°
Gamma Shift From Below
27°
30°
Gamma Shift From Above
35°
32°
Gray Uniformity
8.8
8.1
50% Uniformity Picture
50% Std. Dev.
2.697%
3.133%
50% DSE
0.104%
0.138%
5% Uniformity Picture
5% Std. Dev.
0.155%
5% DSE
0.035%
Black Uniformity
2.4
2.7
Native Black Uniformity Picture
Native Std. Dev.
4.406%
4.228%
Black Uniformity Picture With Local Dimming
Std. Dev. w/ L.D.
N/A
N/A
Color Accuracy (Pre-Calibration)
7.3
7.7
Pre Calibration Picture
Pre Gamma Curve Picture
Pre Color Picture
Picture Mode
RPG
sRGB
sRGB Gamut Area xy
104.1%
White Balance dE (Avg.)
2.48
5.14
Color Temperature (Avg.)
6,224 K
7,739 K
Gamma (Avg.)
2.39
2.18
Color dE (Avg.)
3.85
3.19
Contrast Setting
75
N/A
RGB Settings
100-100-100
Default
Gamma Setting
No Gamma Setting
Mode 1
Brightness Setting
24
100
Measured Brightness
103 cd/m²
392 cd/m²
Brightness Locked
No
Color Accuracy (Post-Calibration)
9.6
9.7
Post Calibration Picture
Post Gamma Curve Picture
Post Color Picture
Picture Mode
Custom Color
Custom
sRGB Gamut Area xy
101.2%
White Balance dE (Avg.)
0.53
0.65
Color Temperature (Avg.)
6,542 K
6,477 K
Gamma (Avg.)
2.17
2.17
Color dE (Avg.)
0.53
0.40
Contrast Setting
73
70
RGB Settings
95-99-100
55-52-44
Gamma Setting
No Gamma Setting
Mode 1
Brightness Setting
29
14
Measured Brightness
101 cd/m²
99 cd/m²
ICC Profile
SDR Color Gamut
8.7
9.3
sRGB Color Gamut Picture
sRGB Coverage xy
97.2%
99.9%
sRGB Picture Mode
Custom Color
Custom
Adobe RGB Color Gamut Picture
Adobe RGB Coverage xy
76.5%
78.3%
Adobe RGB Picture Mode
Custom Color
Custom
SDR Color Volume
8.9
9.4
sRGB Color Volume ITP Picture
sRGB In ICtCp
96.1%
97.1%
sRGB Picture Mode
Custom Color
Custom
Adobe RGB Color Volume ITP Picture
Adobe RGB In ICtCp
82.1%
82.8%
Adobe RGB Picture Mode
Custom Color
Custom
HDR Color Gamut
0.0
6.8
Wide Color Gamut
N/A
No
DCI-P3 Color Gamut Picture
DCI-P3 Coverage xy
82.3%
DCI-P3 Picture Mode
No HDR
Custom
Rec. 2020 Color Gamut Picture
Rec. 2020 Coverage xy
N/A
59.4%
Rec. 2020 Picture Mode
No HDR
Custom
DCI P3 xy
N/A
HDR Color Volume
0.0
6.2
DCI-P3 Color Volume ITP Picture
DCI-P3 In ICtCp
N/A
63.0%
DCI-P3 Picture Mode
No HDR
Custom
Rec. 2020 Color Volume ITP Picture
Rec. 2020 In ICtCp
N/A
53.2%
Rec. 2020 Picture Mode
No HDR
Custom
Image Retention
10
Image Retention Picture
IR After 0 Min Recovery
0.00%
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
8.0
8.3
Average Room
Average Room Off Picture
Bright Room Off Picture
Screen Finish
Matte
Matte
Total Reflections
5.2%
4.4%
Indirect Reflections
4.3%
3.7%
Calculated Direct Reflections
0.9%
0.7%
Text Clarity
7.0
7.0
ClearType On
ClearType Off
Pixel Type
IPS
IPS
Pixels
Subpixel Layout
RGB
RGB
Gradient
8.0
9.5
Gradient Picture
Color Depth
8 Bit
10 Bit
Color Bleed
9.9
Color Bleed Horizontal
Pixel Row Error
0.000%
Color Bleed Vertical
Pixel Column Error
0.021%
Motion
Refresh Rate
9.0
Native Refresh Rate
240 Hz
240 Hz
Max Refresh Rate
240 Hz
240 Hz
Max Refresh Rate Over DP
240 Hz
Max Refresh Rate Over HDMI
240 Hz
Max Refresh Rate Over DP @ 10-bit
240 Hz
Max Refresh Rate Over HDMI @ 10-Bit
120 Hz
Variable Refresh Rate (VRR)
FreeSync
Yes
Yes
G-SYNC
Compatible (NVIDIA Certified)
Compatible (NVIDIA Certified)
VRR Maximum
240 Hz
240 Hz
VRR Minimum
< 20 Hz
< 20 Hz
VRR Supported Connectors
DisplayPort, HDMI
DisplayPort, HDMI
Variable Refresh Rate
FreeSync
Yes
Native
240 Hz
240 Hz
Max Refresh Rate
240 Hz
240 Hz
Variable Refresh Rate
Yes
Response Time @ Max Refresh Rate
9.7
7.9
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
Fast
Adaptive Sync
Rise / Fall Time
3.0 ms
6.0 ms
Total Response Time
5.8 ms
10.7 ms
Overshoot Error
0.8%
0.0%
Worst 3 Rise / Fall Time
3.1 ms
8.9 ms
Worst 3 Total Response Time
7.1 ms
15.2 ms
Worst 3 Overshoot Error
1.0%
0.0%
Response Time @ 120Hz
7.7
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
Adaptive Sync
Rise / Fall Time
6.2 ms
Total Response Time
11.3 ms
Overshoot Error
0.0%
Worst 3 Rise / Fall Time
9.0 ms
Worst 3 Total Response Time
16.5 ms
Worst 3 Overshoot Error
0.0%
Response Time @ 60Hz
7.9
7.4
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
Fast
Adaptive Sync
Rise / Fall Time
3.9 ms
6.1 ms
Total Response Time
17.3 ms
14.4 ms
Overshoot Error
6.8%
0.0%
Worst 3 Rise / Fall Time
4.1 ms
9.0 ms
Worst 3 Total Response Time
21.0 ms
18.0 ms
Worst 3 Overshoot Error
9.2%
0.0%
Backlight Strobing (BFI)
Backlight Strobing Picture
Backlight Strobing Frequency Picture
Backlight Strobing (BFI)
No BFI
Yes
Maximum Frequency
N/A
240 Hz
Minimum Frequency
N/A
240 Hz
Longest Pulse Width Brightness
271 cd/m²
Shortest Pulse Width Brightness
271 cd/m²
Pulse Width Control
No
Pulse Phase Control
No
Pulse Amplitude Control
No
VRR At The Same Time
No
Image Flicker
10
10
Backlight Picture
Flicker-Free
Yes
Yes
PWM Dimming Frequency
0 Hz
0 Hz
Inputs
Input Lag
9.6
9.0
Native Resolution @ Max Hz
2.8 ms
2.9 ms
Native Resolution @ 120Hz
6.4 ms
Native Resolution @ 60Hz
14.3 ms
14.6 ms
Variable Refresh Rate
3.0 ms
Variable Refresh Rate @ 60Hz
15.1 ms
10 Bit HDR
N/A
Backlight Strobing (BFI)
N/A
3.0 ms
Resolution And Size
7.1
6.5
Native Resolution
1920 x 1080
1920 x 1080
Aspect Ratio
16:9
16:9
Megapixels
2.1 MP
2.1 MP
Pixel Density
82 PPI
81 PPI
Measured Screen Diagonal
27.0"
27.0"
Screen Area
310 in²
313 in²
PS5 Compatibility
5.0
PS5 Compatibility Photo
4k @ 120Hz
No
4k @ 60Hz
No
1440p @ 120Hz
No
1440p @ 60Hz
No
1080p @ 120Hz
Yes
1080p @ 60Hz
Yes
HDR
Yes
VRR
No
Xbox Series X|S Compatibility
5.0
XSX Compatibility Photo
4k @ 120Hz
No
4k @ 60Hz
No
1440p @ 120Hz
No
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 1.2)
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
1
HDR10
No
Yes
3.5mm Audio In
No
3.5mm Microphone In
No
No
DisplayPort Out
No
USB
4 (USB 3.0)
1 (Service Port Only)
USB C
No
0
Digital Optical Audio Out
No
Analog Audio Out RCA
No
Power Supply
Internal
External Brick
USB
USB-A Ports
4 (USB 3.0)
1 (Service Port Only)
USB-A Rated Speed
480Mbps (USB 2.0)
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
macOS Compatibility
macOS Screenshot
Features
Additional Features
Speakers
No
No
RGB Illumination
Controllable
No
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"
Alienware AW2720HF
SEE PRICE
Amazon.com
27"
LS27BG402ENXGO
SEE PRICE
BestBuy.com
27"
Alienware AW2720HF
SEE PRICE
BestBuy.com
27"
LS27BG402ENXGO
SEARCH
Amazon.com
27"
Alienware AW2720HF
SEARCH
B&H
27"
LS27BG402ENXGO
SEARCH
B&H
27"
Alienware AW2720HF
SEARCH
Walmart.com
27"
LS27BG402ENXGO
SEARCH
Samsung.com
27"
LS27BG402ENXGO
SEARCH
Walmart.com
Dell Alienware AW2720HF
Samsung Odyssey G4/G40B S27BG40
Comments
Dell Alienware AW2720HF vs Samsung Odyssey G4/G40B S27BG40: Main Discussion
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