Products
ASUS ROG Strix XG27ACS
Samsung Odyssey G50D S27DG50
Tested using Methodology v2.1
Updated Aug 25, 2025 03:31 PM
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Tested using Methodology v2.1
Updated Jul 14, 2025 04:17 PM
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Max Refresh Rate
180 Hz
Size
27"
Pixel Type
IPS
Native Resolution
2560 x 1440
Max Refresh Rate
180 Hz
Size
27"
Pixel Type
IPS
Native Resolution
2560 x 1440
Our Verdict
ASUS ROG Strix XG27ACS
Samsung Odyssey G50D S27DG50
The ASUS ROG Strix XG27ACS and the Samsung Odyssey G50D S27DG50 are both entry-level 1440p gaming monitors. They have similar specs, including their 180Hz refresh rates, but the ASUS is slightly better for gaming. It has better motion handling and a backlight strobing feature to reduce persistence blur. Overall, however, the two monitors are very similar.
Variants
- ROG Strix XG27ACS (27")
- ROG Strix XG27ACS-W (27")
- LS27DG500ENXZA (27")
Check Price
27"
ROG Strix XG27ACS
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27"
LS27DG500ENXZA
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27"
ROG Strix XG27ACS-W
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27"
LS27DG500ENXZA
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27"
LS27DG500ENXZA
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Samsung.com
27"
LS27DG500ENXZA
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B&H
27"
LS27DG500ENXZA
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Main Differences for
PC Gaming
PC Gaming
Threshold
PC Gaming
7.3
7.1
VRR Motion Performance
8.2
7.2
Full Comparison
Design
Style
Design Picture
Curved
No
No
Curve Radius
Not Curved
Not Curved
Accelerated Longevity Test
Uniformity Pictures
Longevity Graph
Build Quality
8.0
7.0
Build Quality Picture
Ergonomics
9.0
9.3
Ergonomics Picture
Back Picture
Height Adjustment
4.6" (11.8 cm)
4.7" (12.0 cm)
Min Height To Top Of Panel
15.2" (38.6 cm)
16.6" (42.2 cm)
Tilt Range
-20° to 2.5°
-25° to 2.5°
Rotate Portrait/Landscape
Yes, Both Ways
Yes, Both Ways
Swivel Range
-45° to 45°
-30° to 30°
Wall Mount
VESA 100x100
VESA 100x100
Stand
Stand Picture
Thickness Picture
Base Width
10.7" (27.3 cm)
11.7" (29.7 cm)
Base Depth
8.6" (21.9 cm)
9.8" (25.0 cm)
Thickness (With Display)
6.7" (17.0 cm)
7.3" (18.5 cm)
Weight (With Display)
14.6 lbs (6.6 kg)
14.3 lbs (6.5 kg)
Display
Display Picture
Size
27"
27"
Housing Width
24.2" (61.5 cm)
24.2" (61.4 cm)
Housing Height
14.4" (36.7 cm)
14.5" (36.9 cm)
Thickness (Without Stand)
2.2" (5.5 cm)
1.6" (4.0 cm)
Weight (Without Stand)
8.7 lbs (3.9 kg)
7.4 lbs (3.4 kg)
Borders Size (Bezels)
0.3" (0.9 cm)
0.3" (0.8 cm)
Controls
Controls Picture
In The Box
In The Box Picture
Power Supply
Internal
External Brick
Picture Quality
Contrast
6.2
6.3
Checkerboard Picture
Native Contrast
1,155 : 1
1,221 : 1
Contrast With Local Dimming
N/A
1,239 : 1
Local Dimming
0.0
2.5
Local Dimming Video
Local Dimming
No
Yes
Backlight
Edge
Edge
SDR Brightness
8.2
8.3
Real Scene
392 cd/m²
404 cd/m²
Peak 2% Window
412 cd/m²
429 cd/m²
Peak 10% Window
414 cd/m²
428 cd/m²
Peak 25% Window
414 cd/m²
428 cd/m²
Peak 50% Window
414 cd/m²
427 cd/m²
Peak 100% Window
414 cd/m²
427 cd/m²
Sustained 2% Window
411 cd/m²
428 cd/m²
Sustained 10% Window
413 cd/m²
427 cd/m²
Sustained 25% Window
413 cd/m²
427 cd/m²
Sustained 50% Window
414 cd/m²
426 cd/m²
Sustained 100% Window
414 cd/m²
426 cd/m²
Automatic Brightness Limiting (ABL)
0.000
0.000
Minimum Brightness
36 cd/m²
58 cd/m²
HDR Brightness
6.9
6.9
EOTF
VESA DisplayHDR Certification
DisplayHDR 400 - 1.0/1.1
DisplayHDR 400 - 1.0/1.1
Real Scene
414 cd/m²
415 cd/m²
Peak 2% Window
436 cd/m²
431 cd/m²
Peak 10% Window
439 cd/m²
431 cd/m²
Peak 25% Window
439 cd/m²
432 cd/m²
Peak 50% Window
439 cd/m²
431 cd/m²
Peak 100% Window
439 cd/m²
432 cd/m²
Sustained 2% Window
436 cd/m²
430 cd/m²
Sustained 10% Window
438 cd/m²
431 cd/m²
Sustained 25% Window
438 cd/m²
431 cd/m²
Sustained 50% Window
438 cd/m²
431 cd/m²
Sustained 100% Window
438 cd/m²
432 cd/m²
Automatic Brightness Limiting (ABL)
0.000
0.000
Horizontal Viewing Angle
8.0
7.6
Horizontal Viewing Angle Video
Horizontal Chroma Graph
Color Washout From Left
32°
34°
Color Washout From Right
31°
39°
Horizontal Hue Graph
Color Shift From Left
53°
47°
Color Shift From Right
56°
57°
Horizontal Lightness Graph
Brightness Loss From Left
44°
40°
Brightness Loss From Right
38°
44°
Black Level Raise From Left
70°
70°
Black Level Raise From Right
70°
70°
Gamma Shift From Left
60°
37°
Gamma Shift From Right
58°
37°
Vertical Viewing Angle
6.5
7.7
Vertical Viewing Angle Video
Vertical Chroma Graph
Color Washout From Below
25°
36°
Color Washout From Above
27°
35°
Vertical Hue Graph
Color Shift From Below
28°
46°
Color Shift From Above
35°
54°
Vertical Lightness Graph
Brightness Loss From Below
28°
38°
Brightness Loss From Above
31°
38°
Black Level Raise From Below
70°
70°
Black Level Raise From Above
70°
70°
Gamma Shift From Below
26°
47°
Gamma Shift From Above
27°
49°
Gray Uniformity
7.7
7.1
50% Uniformity Picture
50% Std. Dev.
3.733%
5.117%
50% DSE
0.149%
0.169%
Black Uniformity
6.8
6.3
Native Black Uniformity Picture
Native Std. Dev.
1.479%
1.645%
Black Uniformity Picture With Local Dimming
Std. Dev. w/ L.D.
N/A
2.407%
Color Accuracy (Pre-Calibration)
9.3
8.5
Pre Calibration Picture
Pre Gamma Curve Picture
Pre Color Picture
Picture Mode
sRGB Mode
Custom
sRGB Gamut Area xy
101.5%
101.1%
White Balance dE (Avg.)
1.80
2.92
Color Temperature (Avg.)
6,422 K
7,054 K
Gamma (Avg.)
2.17
2.26
Color dE (Avg.)
0.99
3.06
Contrast Setting
N/A
50
RGB Settings
Default
0-0-0
Gamma Setting
Default
0
Brightness Setting
25
50
Measured Brightness
134 cd/m²
441 cd/m²
Brightness Locked
No
No
Color Accuracy (Post-Calibration)
9.8
8.4
Post Calibration Picture
Post Gamma Curve Picture
Post Color Picture
Picture Mode
User Mode
Custom
sRGB Gamut Area xy
101.0%
90.1%
White Balance dE (Avg.)
0.53
0.67
Color Temperature (Avg.)
6,501 K
6,510 K
Gamma (Avg.)
2.18
2.17
Color dE (Avg.)
0.29
1.70
Contrast Setting
80
50
RGB Settings
100-96-91
-1,-2,-9
Gamma Setting
2.2
0
Brightness Setting
17
6
Measured Brightness
101 cd/m²
104 cd/m²
SDR Color Gamut
9.5
9.3
sRGB Color Gamut Picture
sRGB Coverage xy
100.0%
99.1%
sRGB Picture Mode
User Mode
Custom
Adobe RGB Color Gamut Picture
Adobe RGB Coverage xy
85.0%
79.7%
Adobe RGB Picture Mode
User Mode
Custom
HDR Color Gamut
8.2
7.1
Wide Color Gamut
Yes
Yes
DCI-P3 Color Gamut Picture
DCI-P3 Coverage xy
91.1%
84.1%
DCI-P3 Picture Mode
Console HDR
Custom
Rec. 2020 Color Gamut Picture
Rec. 2020 Coverage xy
67.3%
60.7%
Rec. 2020 Picture Mode
Console HDR
Custom
HDR Color Volume
7.5
7.1
DCI-P3 Color Volume ITP Picture
1,000 cd/m² DCI-P3 Coverage ICtCp
67.3%
61.1%
DCI-P3 Picture Mode
Console HDR
Custom
Rec. 2020 Color Volume ITP Picture
10,000 cd/m² Rec. 2020 Coverage ICtCp
30.5%
26.9%
Rec. 2020 Picture Mode
Console HDR
Custom
Text Clarity
7.5
7.5
ClearType On
ClearType Off
Pixel Type
IPS
IPS
Pixels
Subpixel Layout
RGB
RGB
Direct Reflections
7.3
7.5
Ring Light Picture
Direct Reflections Graph
Peak Direct Reflection Intensity
21.9%
20.4%
Screen Finish
Matte
Matte
Ambient Black Level Raise
6.9
6.8
Black Level Raise Picture
Ambient Black Level Raise Graph
Black Luminance @ 0 lx
0.35 cd/m²
0.33 cd/m²
Black Luminance @ 1000 lx
1.62 cd/m²
1.68
Total Reflected Light
6.4
6.6
Bright Room Off Picture
Total Reflection Ring Light Picture
Total Reflected Light Intensity
27,449% ⋅ pixel
25,911% ⋅ pixel
Diffraction Artifacts
No
No
Gradient
9.8
9.8
Gradient Picture
Color Depth
10 Bit
10 Bit
Motion
Refresh Rate
7.7
7.7
Native Refresh Rate
180 Hz
180 Hz
Max Refresh Rate
180 Hz
180 Hz
Max Refresh Rate Over DP
180 Hz
180 Hz
Max Refresh Rate Over HDMI
144 Hz
144 Hz
Max Refresh Rate Over DP @ 10-bit
180 Hz
120 Hz
Max Refresh Rate Over HDMI @ 10-Bit
60 Hz
60 Hz
DSC Toggle
No
No
DSC Off Max Refresh Rate Over DP
N/A
N/A
DSC Off Max Refresh Rate Over HDMI
N/A
N/A
Variable Refresh Rate (VRR)
Variable Refresh Rate
Yes
Yes
FreeSync
Yes
Yes
G-SYNC
Compatible (NVIDIA Certified)
Compatible (NVIDIA Certified)
VRR Maximum
180 Hz
180 Hz
VRR Minimum
< 20 Hz
< 20 Hz
VRR Supported Connectors
DisplayPort, HDMI
DisplayPort, HDMI
VRR Motion Performance
8.2
7.2
Pursuit Photo VRR
OD Mode CAD Comparison
Recommended VRR OD Setting
Level 9
Adaptive-Sync
Variable Overdrive Advertised
Yes
No
Avg. CAD
144
223
Best CAD
125
223
Worst CAD
161
224
Refresh Rate Compliance
7.8
7.0
Fast GTG Sequence
VRR Compliance
Compliance @ Max Hz
52%
39%
Compliance @ 120 FPS
64%
53%
Compliance @ 60 FPS
79%
74%
CAD @ Max Refresh Rate
8.2
7.5
Pursuit Photo At Max Refresh
CAD Heatmap At Max Refresh
OD Transition Max Refresh Rate
OD level0
0 to 31
OD adaptivesync
0 to 31
Recommended Overdrive Setting
Level 9
Faster
Avg. CAD
125
174
Best 10% CAD
70
89
Worst 10% CAD
209
278
Response Time @ Max Refresh Rate
First Response Time
3.6 ms
6.9 ms
Total Response Time
6.8 ms
7.3 ms
Recommended Overdrive Setting
Level 9
Faster
RGB Overshoot
7 RGB
1 RGB
Worst 10% RGB Overshoot
15 RGB
9 RGB
Worst 10% First Response Time
6.3 ms
12.0 ms
Worst 10% Total Response Time
9.5 ms
12.0 ms
Heatmap First Response
Heatmap Total Response
Heatmap RGB Overshoot
CAD @ 120Hz
8.0
7.7
Pursuit Photo 120Hz
CAD Heatmap 120Hz
OD Transition 120Hz
OD level0
0 to 31
OD adaptivesync
0 to 31
Recommended Overdrive Setting
Level 9
Faster
Avg. CAD
143
172
Best 10% CAD
78
90
Worst 10% CAD
233
260
Response Time @ 120Hz
Worst 10% First Response Time
6.8 ms
8.2 ms
RGB Overshoot
4 RGB
3 RGB
Total Response Time
7.5 ms
7.4 ms
First Response Time
4.7 ms
5.6 ms
Recommended Overdrive Setting
Level 9
Faster
Worst 10% Total Response Time
12.0 ms
12.7 ms
Worst 10% RGB Overshoot
12 RGB
17 RGB
120Hz First Response Heatmap
120Hz Total Response Heatmap
120Hz Heatmap RGB Overshoot
CAD @ 60Hz
7.7
7.7
Pursuit Photo 60Hz
CAD Heatmap 60Hz
OD Transition 60Hz
OD level0
0 to 31
OD adaptivesync
0 to 31
Recommended Overdrive Setting
Level 9
Faster
Avg. CAD
161
169
Best 10% CAD
86
88
Worst 10% CAD
267
254
Response Time @ 60Hz
Recommended Overdrive Setting
Level 9
Faster
First Response Time
5.7 ms
5.5 ms
Total Response Time
8.6 ms
7.2 ms
RGB Overshoot
2 RGB
3 RGB
Worst 10% Total Response Time
19.5 ms
12.5 ms
Worst 10% First Response Time
7.7 ms
7.8 ms
Worst 10% RGB Overshoot
10 RGB
17 RGB
60Hz First Response Heatmap
60Hz Total Response Heatmap
60Hz RGB Overshoot Heatmap
Backlight Strobing (BFI)
Backlight Strobing Picture
Backlight Strobing Frequency Picture
Backlight Strobing (BFI)
Yes
No BFI
Maximum Frequency
180 Hz
N/A
Minimum Frequency
80 Hz
N/A
Longest Pulse Width Brightness
247 cd/m²
N/A
Shortest Pulse Width Brightness
84 cd/m²
N/A
Pulse Width Control
Yes
No BFI
Pulse Phase Control
Yes
No BFI
Pulse Amplitude Control
No
No BFI
VRR At The Same Time
Yes
No BFI
VRR Flicker
8.1
9.6
VRR Flicker Video
VRR Flicker Graph
Dark Gray Flicker
1.2 RGB
0.3 RGB
Middle Gray Flicker
1.8 RGB
0.2 RGB
Light Gray Flicker
1.7 RGB
0.2 RGB
Image Flicker
10
10
Backlight Picture
Flicker-Free
Yes
Yes
PWM Dimming Frequency
0 Hz
0 Hz
Inputs
Input Lag
8.9
8.8
Native Resolution @ Max Hz
4.1 ms
4.8 ms
Native Resolution @ 120Hz
5.7 ms
6.2 ms
Native Resolution @ 60Hz
10.0 ms
10.8 ms
Backlight Strobing (BFI)
4.9 ms
N/A
Resolution
7.5
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
PS5 Compatibility
6.6
4.9
PS5 Compatibility Photo
PS5 Compatibility Table
4k @ 120Hz
No
No
4k @ 60Hz
Yes
Yes
1440p @ 120Hz
Yes
Yes
1440p @ 60Hz
Yes
Yes
1080p @ 120Hz
Yes
Yes
1080p @ 60Hz
Yes
Yes
Xbox Series X|S Compatibility
7.1
6.6
XSX Compatibility Photo
XSX Compatibility Table
4k @ 120Hz
No
No
4k @ 60Hz
Yes
Yes
1440p @ 120Hz
Yes
Yes
1440p @ 60Hz
Yes
Yes
1080p @ 120Hz
Yes
Yes
1080p @ 60Hz
Yes
Yes
Inputs
Inputs 1
Inputs 2
DisplayPort
1 (DP 1.4)
1 (DP 1.2)
DisplayPort Transmission Bandwidth
No DisplayPort 2.1
No DisplayPort 2.1
Mini DisplayPort
No
No
HDMI
1 (HDMI 2.0)
1 (HDMI 2.0)
HDMI 2.1 Bandwidth
No HDMI 2.1
No HDMI 2.1
Daisy Chaining
No
No
3.5mm Audio Out
Yes
Yes
Ethernet
No
No
HDR10
Yes
Yes
Dolby Vision
No
No
USB
USB-A Ports
0
1 (Service Port Only)
USB-A Rated Speed
No USB-A Ports
480Mbps (USB 2.0)
USB-B Upstream Port
No
No
USB-C Ports
1
0
USB-C Upstream
Yes
No USB-C Ports
USB-C Rated Speed
5Gbps (USB 3.2 Gen 1)
No USB-C Ports
USB-C Power Delivery
5W
No USB-C Ports
USB-C DisplayPort Alt Mode
Yes
No USB-C Ports
Thunderbolt
No
No
macOS Compatibility
macOS Screenshot
Features
Additional Features
Speakers
No
No
RGB Illumination
No
No
Multiple Input Display
No
No
KVM Switch
No
No
Smart OS
No
No
On-Screen Display (OSD)
OSD Picture
Check Price
27"
ROG Strix XG27ACS
SEE PRICE
Amazon.com
27"
LS27DG500ENXZA
SEE PRICE
Amazon.com
27"
ROG Strix XG27ACS-W
SEARCH
Amazon.com
27"
LS27DG500ENXZA
SEE PRICE
BestBuy.com
27"
LS27DG500ENXZA
SEE PRICE
Samsung.com
27"
LS27DG500ENXZA
SEE PRICE
B&H
27"
LS27DG500ENXZA
SEE PRICE
Walmart.com
ASUS ROG Strix XG27ACS
Samsung Odyssey G50D S27DG50
Comments
ASUS ROG Strix XG27ACS vs Samsung Odyssey G50D S27DG50: Main Discussion
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