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Products
Samsung Odyssey G55T C27G55T
Samsung Odyssey G55A S27AG55
Tested using Methodology v1.2
Updated Jun 13, 2025 08:56 PM
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Amazon.comTested using Methodology v2.0.1
Updated Aug 11, 2025 03:35 PM
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Max Refresh Rate144 Hz
Size27"
Pixel TypeVA
Native Resolution2560 x 1440
Variable Refresh RateYes
HDR10Yes
Max Refresh Rate165 Hz
Size27"
Pixel TypeVA
Native Resolution2560 x 1440
Variable Refresh RateYes
HDR10Yes
Our Verdict
Samsung Odyssey G55T C27G55T
Samsung Odyssey G55A S27AG55
The Samsung Odyssey G55A S27AG55 is a bit better than the model it replaces, the Samsung Odyssey G55T C27G55T. The S27AG55 has a nearly completely flicker-free backlight, so it's easier on the eyes and has better text clarity. The S27AG55 also has a much better SDR color gamut, with better coverage of the sRGB color space.
Variants
- LC27G55TQWNXZA (27")
- LS27AG550ENXZA (27")
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27"
LC27G55TQWNXZA
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Amazon.com27"
LS27AG550ENXZA
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LC27G55TQWNXZA
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LS27AG550ENXZA
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LC27G55TQWNXZA
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Samsung.comMain Differences forMixed Usage
Mixed Usage
Threshold
Mixed Usage
6.7
Full Comparison
Design
Style
Design Picture
Curved
Yes
Yes
Curve Radius
1000R
1000R
Accelerated Longevity Test
Uniformity Pictures
Longevity Graph
Build Quality
7.0
7.0
Build Quality Picture
Ergonomics
1.7
4.1
Ergonomics Picture
Back Picture
Height Adjustment
0.0" (0.0 cm)
0.0" (0.0 cm)
Min Height To Top Of Panel
18.1" (45.9 cm)
Tilt Range
-17.5° to 2.5°
-17.5° to 2.5°
Rotate Portrait/Landscape
No
No
Swivel Range
No swivel
No swivel
Wall Mount
VESA 75x75
VESA 75x75
Stand
Stand Picture
Thickness Picture
Base Width
21.7" (55.0 cm)
21.7" (55.0 cm)
Base Depth
10.8" (27.5 cm)
10.9" (27.6 cm)
Thickness (With Display)
9.4" (24.0 cm)
9.1" (23.0 cm)
Weight (With Display)
9.9 lbs (4.5 kg)
9.9 lbs (4.5 kg)
Display
Display Picture
Size
27"
27"
Housing Width
24.2" (61.4 cm)
24.2" (61.5 cm)
Housing Height
15.1" (38.3 cm)
15.0" (38.2 cm)
Thickness (Without Stand)
4.7" (12.0 cm)
4.1" (10.5 cm)
Weight (Without Stand)
9.7 lbs (4.4 kg)
9.0 lbs (4.1 kg)
Borders Size (Bezels)
0.5" (1.2 cm)
0.4" (1.0 cm)
Controls
Controls Picture
In The Box
In The Box Picture
Power Supply
External Brick
External Brick
Picture Quality
Contrast
7.9
7.6
Checkerboard Picture
Native Contrast
2,997 : 1
2,521 : 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
7.2
6.8
Real Scene
285 cd/m²
245 cd/m²
Peak 2% Window
150 cd/m²
238 cd/m²
Peak 10% Window
281 cd/m²
257 cd/m²
Peak 25% Window
281 cd/m²
257 cd/m²
Peak 50% Window
281 cd/m²
257 cd/m²
Peak 100% Window
281 cd/m²
257 cd/m²
Sustained 2% Window
150 cd/m²
237 cd/m²
Sustained 10% Window
281 cd/m²
256 cd/m²
Sustained 25% Window
281 cd/m²
257 cd/m²
Sustained 50% Window
281 cd/m²
257 cd/m²
Sustained 100% Window
281 cd/m²
257 cd/m²
Automatic Brightness Limiting (ABL)
0.044
0.005
Minimum Brightness
37 cd/m²
50 cd/m²
HDR Brightness
5.9
6.0
EOTF
VESA DisplayHDR Certification
No Certification
No Certification
Real Scene
298 cd/m²
293 cd/m²
Peak 2% Window
159 cd/m²
283 cd/m²
Peak 10% Window
297 cd/m²
306 cd/m²
Peak 25% Window
297 cd/m²
306 cd/m²
Peak 50% Window
297 cd/m²
306 cd/m²
Peak 100% Window
297 cd/m²
306 cd/m²
Sustained 2% Window
158 cd/m²
283 cd/m²
Sustained 10% Window
296 cd/m²
306 cd/m²
Sustained 25% Window
297 cd/m²
306 cd/m²
Sustained 50% Window
297 cd/m²
306 cd/m²
Sustained 100% Window
297 cd/m²
306 cd/m²
Automatic Brightness Limiting (ABL)
0.043
0.005
Horizontal Viewing Angle
5.4
5.3
Horizontal Viewing Angle Video
Horizontal Chroma Graph
Color Washout From Left
29°
30°
Color Washout From Right
29°
27°
Horizontal Hue Graph
Color Shift From Left
39°
40°
Color Shift From Right
42°
41°
Horizontal Lightness Graph
Brightness Loss From Left
30°
31°
Brightness Loss From Right
30°
28°
Black Level Raise From Left
12°
12°
Black Level Raise From Right
14°
11°
Gamma Shift From Left
12°
14°
Gamma Shift From Right
15°
12°
Vertical Viewing Angle
4.9
4.7
Vertical Viewing Angle Video
Vertical Chroma Graph
Color Washout From Below
25°
24°
Color Washout From Above
26°
26°
Vertical Hue Graph
Color Shift From Below
25°
28°
Color Shift From Above
29°
24°
Vertical Lightness Graph
Brightness Loss From Below
28°
28°
Brightness Loss From Above
29°
29°
Black Level Raise From Below
6°
6°
Black Level Raise From Above
9°
6°
Gamma Shift From Below
12°
13°
Gamma Shift From Above
15°
12°
Gray Uniformity
8.7
8.3
50% Uniformity Picture
50% Std. Dev.
1.852%
2.082%
50% DSE
0.119%
0.137%
Black Uniformity
3.5
5.5
Native Black Uniformity Picture
Native Std. Dev.
3.691%
2.324%
Black Uniformity Picture With Local Dimming
Std. Dev. w/ L.D.
N/A
N/A
Color Accuracy (Pre-Calibration)
9.0
8.1
Pre Calibration Picture
Pre Gamma Curve Picture
Pre Color Picture
Picture Mode
Custom
Custom
sRGB Gamut Area xy
101.1%
104.1%
White Balance dE (Avg.)
1.74
3.72
Color Temperature (Avg.)
6,747 K
7,103 K
Gamma (Avg.)
2.08
2.20
Color dE (Avg.)
2.16
2.76
Contrast Setting
75
75
RGB Settings
50-50-50
50-50-50
Gamma Setting
Mode 1
Mode 1
Brightness Setting
55
75
Measured Brightness
191 cd/m²
182 cd/m²
Brightness Locked
No
No
Color Accuracy (Post-Calibration)
9.3
9.5
Post Calibration Picture
Post Gamma Curve Picture
Post Color Picture
Picture Mode
Custom
Custom
sRGB Gamut Area xy
95.0%
96.9%
White Balance dE (Avg.)
0.51
0.41
Color Temperature (Avg.)
6,472 K
6,507 K
Gamma (Avg.)
2.19
2.20
Color dE (Avg.)
0.84
0.68
Contrast Setting
75
70
RGB Settings
52-49-48
50-44-44
Gamma Setting
Mode 1
Mode 1
Brightness Setting
26
22
Measured Brightness
100 cd/m²
101 cd/m²
SDR Color Gamut
8.5
8.9
sRGB Color Gamut Picture
sRGB Coverage xy
95.5%
96.8%
sRGB Picture Mode
Custom
Custom
Adobe RGB Color Gamut Picture
Adobe RGB Coverage xy
73.2%
76.1%
Adobe RGB Picture Mode
Custom
Custom
HDR Color Gamut
5.9
6.2
Wide Color Gamut
No
No
DCI-P3 Color Gamut Picture
DCI-P3 Coverage xy
74.7%
77.3%
DCI-P3 Picture Mode
Custom
HDR On
Rec. 2020 Color Gamut Picture
Rec. 2020 Coverage xy
51.9%
55.5%
Rec. 2020 Picture Mode
Custom
HDR On
HDR Color Volume
5.4
6.1
DCI-P3 Color Volume ITP Picture
1,000 cd/m² DCI-P3 Coverage ICtCp
55.3%
46.7%
DCI-P3 Picture Mode
Custom
HDR On
Rec. 2020 Color Volume ITP Picture
10,000 cd/m² Rec. 2020 Coverage ICtCp
42.2%
19.9%
Rec. 2020 Picture Mode
Custom
HDR On
Text Clarity
7.0
7.5
ClearType On
ClearType Off
Pixel Type
VA
VA
Pixels
Subpixel Layout
RGB
RGB
Reflections
7.8
7.5
Average Room
Average Room Off Picture
Bright Room Off Picture
Screen Finish
Matte
Matte
Total Reflections
5.2%
5.3%
Indirect Reflections
3.6%
3.1%
Calculated Direct Reflections
1.5%
2.2%
Gradient
9.8
9.8
Gradient Picture
Color Depth
10 Bit
10 Bit
SDR Color Volume
7.7
sRGB Color Volume ITP Picture
sRGB In ICtCp
79.7%
sRGB Picture Mode
Custom
Adobe RGB Color Volume ITP Picture
Adobe RGB In ICtCp
67.4%
Adobe RGB Picture Mode
Custom
Motion
Refresh Rate
8.3
7.5
Native Refresh Rate
144 Hz
165 Hz
Max Refresh Rate
144 Hz
165 Hz
Max Refresh Rate Over DP
144 Hz
165 Hz
Max Refresh Rate Over HDMI
144 Hz
144 Hz
Max Refresh Rate Over DP @ 10-bit
120 Hz
165 Hz
Max Refresh Rate Over HDMI @ 10-Bit
60 Hz
60 Hz
Variable Refresh Rate (VRR)
Variable Refresh Rate
Yes
Yes
FreeSync
Yes
Yes
G-SYNC
Compatible (Tested)
Compatible (Tested)
VRR Maximum
144 Hz
165 Hz
VRR Minimum
< 20 Hz
< 20 Hz
VRR Supported Connectors
DisplayPort, HDMI
DisplayPort, HDMI
VRR Motion Performance
4.3
Pursuit Photo VRR
OD Mode CAD Comparison
Recommended VRR OD Setting
FreeSync Premium
Variable Overdrive Advertised
No
Avg. CAD
449
Best CAD
412
Worst CAD
506
Refresh Rate Compliance
5.3
Fast GTG Sequence
VRR Compliance
Compliance @ Max Hz
34%
Compliance @ 120 FPS
45%
Compliance @ 60 FPS
59%
Response Time @ 60Hz
2.6
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
FreeSync On
Fastest
Rise / Fall Time
18.2 ms
14.6 ms
Total Response Time
33.3 ms
16.9 ms
Overshoot Error
0.0%
1 RGB
Worst 3 Rise / Fall Time
28.3 ms
30.9 ms
Worst 3 Total Response Time
49.7 ms
30.9 ms
Worst 3 Overshoot Error
0.0%
9 RGB
CAD @ Max Refresh Rate
5.7
Pursuit Photo At Max Refresh
CAD Heatmap At Max Refresh
OD Transition Max Refresh Rate
OD faster
0 to 31
Recommended Overdrive Setting
Fastest
Avg. CAD
256
Best 10% CAD
83
Worst 10% CAD
653
Response Time @ Max Refresh Rate
First Response Time
11.6 ms
8.8 ms
Total Response Time
21.9 ms
11.9 ms
Recommended Overdrive Setting
FreeSync On
Fastest
Motion Blur Picture
RGB Overshoot
0.0%
7 RGB
Worst 10% RGB Overshoot
0.0%
43 RGB
Worst 10% First Response Time
23.2 ms
26.4 ms
Worst 10% Total Response Time
38.6 ms
26.4 ms
Heatmap First Response
Heatmap Total Response
Heatmap RGB Overshoot
Response Time Table
CAD @ 120Hz
5.5
Pursuit Photo 120Hz
CAD Heatmap 120Hz
OD Transition 120Hz
OD faster
0 to 31
Recommended Overdrive Setting
Fastest
Avg. CAD
286
Best 10% CAD
86
Worst 10% CAD
633
Response Time @ 120Hz
Worst 10% First Response Time
23.3 ms
31.8 ms
RGB Overshoot
0.0%
2 RGB
Total Response Time
22.9 ms
14.2 ms
First Response Time
12.3 ms
12.5 ms
Recommended Overdrive Setting
FreeSync On
Fastest
Worst 10% Total Response Time
38.7 ms
31.8 ms
Worst 10% RGB Overshoot
0.0%
15 RGB
120Hz First Response Heatmap
120Hz Total Response Heatmap
120Hz Heatmap RGB Overshoot
Motion Blur Picture
Response Time Table
CAD @ 60Hz
5.4
Pursuit Photo 60Hz
CAD Heatmap 60Hz
OD Transition 60Hz
OD faster
0 to 31
Recommended Overdrive Setting
Fastest
Avg. CAD
314
Best 10% CAD
92
Worst 10% CAD
612
Response Time @ 60Hz
Recommended Overdrive Setting
FreeSync On
Fastest
First Response Time
18.2 ms
14.6 ms
Total Response Time
33.3 ms
16.9 ms
RGB Overshoot
0.0%
1 RGB
Worst 10% Total Response Time
49.7 ms
30.9 ms
Worst 10% First Response Time
28.3 ms
30.9 ms
Worst 10% RGB Overshoot
0.0%
9 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
Yes
Maximum Frequency
144 Hz
165 Hz
Minimum Frequency
144 Hz
165 Hz
Longest Pulse Width Brightness
147 cd/m²
114 cd/m²
Shortest Pulse Width Brightness
147 cd/m²
114 cd/m²
Pulse Width Control
No
No
Pulse Phase Control
No
No
Pulse Amplitude Control
No
No
VRR At The Same Time
No
No
VRR Flicker
2.4
VRR Flicker Video
VRR Flicker Graph
Dark Gray Flicker
5.9 RGB
Middle Gray Flicker
5.1 RGB
Light Gray Flicker
4.3 RGB
Image Flicker
2.0
10
Backlight Picture
Flicker-Free
No
Yes
PWM Dimming Frequency
144 Hz
>1000 Hz
Inputs
Input Lag
8.8
8.7
Native Resolution @ Max Hz
4.5 ms
4.9 ms
Native Resolution @ 120Hz
5.2 ms
6.1 ms
Native Resolution @ 60Hz
9.2 ms
10.4 ms
Backlight Strobing (BFI)
4.4 ms
7.1 ms
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
PS5 Compatibility
7.0
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
HDR
Yes
VRR
No
Xbox Series X|S Compatibility
9.2
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
HDR
Yes
VRR
Yes
Inputs Photos
Inputs 1
Inputs 2
Video And Audio Ports
DisplayPort
1 (DP 1.2)
1 (DP 1.4)
DisplayPort Transmission Bandwidth
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
DVI
No
No
VGA
No
No
Daisy Chaining
No
No
3.5mm Audio Out
1
1
HDR10
Yes
Yes
3.5mm Audio In
No
No
3.5mm Microphone In
No
No
USB
USB-A Ports
1 (Service Port Only)
1 (Service Port Only)
USB-A Rated Speed
480Mbps (USB 2.0)
480Mbps (USB 2.0)
USB-B Upstream Port
No
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
HDR10
Yes
Yes
Speakers
Yes
No
RGB Illumination
No
No
Multiple Input Display
No
No
KVM Switch
No
No
On-Screen Display (OSD)
OSD Picture
Check Price
27"
LC27G55TQWNXZA
SEE PRICE
Amazon.com27"
LS27AG550ENXZA
SEE PRICE
Amazon.com27"
LC27G55TQWNXZA
SEE PRICE
BestBuy.com27"
LS27AG550ENXZA
SEE PRICE
Walmart.com27"
LC27G55TQWNXZA
SEE PRICE
Walmart.com27"
LS27AG550ENXZA
SEARCH
B&H27"
LC27G55TQWNXZA
SEARCH
B&H27"
LS27AG550ENXZA
SEARCH
BestBuy.com27"
LC27G55TQWNXZA
SEARCH
Samsung.com27"
LS27AG550ENXZA
SEARCH
Samsung.com
Samsung Odyssey G55T C27G55T
Samsung Odyssey G55A S27AG55
Comments
Samsung Odyssey G55T C27G55T vs Samsung Odyssey G55A S27AG55: Main Discussion
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