Products
Gigabyte G27Q
Samsung Odyssey G55T C27G55T
Tested using Methodology v1.2
Updated Jul 23, 2025 07:25 PM
SEE PRICE
Amazon.com
Tested using Methodology v1.2
Updated Jun 13, 2025 08:56 PM
SEE PRICE
Amazon.com
Max Refresh Rate
144 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
Gigabyte G27Q
Samsung Odyssey G55T C27G55T
The Gigabyte G27Q is better than the Samsung Odyssey G55T C27G55T because it has a better response time that results in a clearer image with a shorter blur trail behind fast-moving objects. It also has wider viewing angles that make it easier to share content and gets significantly brighter to combat glare. The Gigabyte can display a wide color gamut for HDR, but the Samsung has a much better contrast ratio to produce deeper blacks.
Variants
- G27Q (27")
- LC27G55TQWNXZA (27")
Check Price
27"
G27Q
SEE PRICE
Amazon.com
27"
LC27G55TQWNXZA
SEE PRICE
Amazon.com
27"
G27Q
SEE PRICE
Walmart.com
27"
LC27G55TQWNXZA
SEE PRICE
BestBuy.com
27"
G27Q
SEARCH
B&H
27"
LC27G55TQWNXZA
SEE PRICE
Walmart.com
27"
G27Q
SEARCH
BestBuy.com
27"
LC27G55TQWNXZA
SEARCH
B&H
27"
LC27G55TQWNXZA
SEARCH
Samsung.com
Main Differences for
Mixed Usage
Mixed Usage
Threshold
Mixed Usage
7.7
6.7
Ergonomics
6.9
1.7
Image Flicker
10
2.0
Response Time @ Max Refresh Rate
7.9
4.7
Horizontal Viewing Angle
7.7
5.4
Vertical Viewing Angle
7.0
4.9
SDR Brightness
8.3
7.2
Full Comparison
Design
Style
Design Picture
Curved
No
Yes
Curve Radius
Not Curved
1000R
Accelerated Longevity Test
Uniformity Pictures
Longevity Graph
Build Quality
7.5
7.0
Build Quality Picture
Ergonomics
6.9
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
No
No
Swivel Range
No swivel
No swivel
Wall Mount
VESA 100x100
VESA 75x75
Stand
Stand Picture
Thickness Picture
Base Width
15.7" (40.0 cm)
21.7" (55.0 cm)
Base Depth
7.4" (18.9 cm)
10.8" (27.5 cm)
Thickness (With Display)
5.2" (13.3 cm)
9.4" (24.0 cm)
Weight (With Display)
14.8 lbs (6.7 kg)
9.9 lbs (4.5 kg)
Display
Display Picture
Size
27"
27"
Housing Width
24.4" (61.9 cm)
24.2" (61.4 cm)
Housing Height
14.4" (36.5 cm)
15.1" (38.3 cm)
Thickness (Without Stand)
2.2" (5.5 cm)
4.7" (12.0 cm)
Weight (Without Stand)
10.6 lbs (4.8 kg)
9.7 lbs (4.4 kg)
Borders Size (Bezels)
0.5" (1.2 cm)
0.5" (1.2 cm)
Controls
Controls Picture
In The Box
In The Box Picture
Power Supply
External Brick
External Brick
Picture Quality
Contrast
6.1
7.9
Checkerboard Picture
Native Contrast
1,096 : 1
2,997 : 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
8.3
7.2
Real Scene
408 cd/m²
285 cd/m²
Peak 2% Window
434 cd/m²
150 cd/m²
Peak 10% Window
437 cd/m²
281 cd/m²
Peak 25% Window
437 cd/m²
281 cd/m²
Peak 50% Window
437 cd/m²
281 cd/m²
Peak 100% Window
437 cd/m²
281 cd/m²
Sustained 2% Window
434 cd/m²
150 cd/m²
Sustained 10% Window
437 cd/m²
281 cd/m²
Sustained 25% Window
437 cd/m²
281 cd/m²
Sustained 50% Window
437 cd/m²
281 cd/m²
Sustained 100% Window
437 cd/m²
281 cd/m²
Automatic Brightness Limiting (ABL)
0.000
0.044
Minimum Brightness
60 cd/m²
37 cd/m²
HDR Brightness
7.2
5.9
EOTF
VESA DisplayHDR Certification
DisplayHDR 400 - 1.0/1.1
No Certification
Real Scene
480 cd/m²
298 cd/m²
Peak 2% Window
512 cd/m²
159 cd/m²
Peak 10% Window
516 cd/m²
297 cd/m²
Peak 25% Window
515 cd/m²
297 cd/m²
Peak 50% Window
515 cd/m²
297 cd/m²
Peak 100% Window
515 cd/m²
297 cd/m²
Sustained 2% Window
511 cd/m²
158 cd/m²
Sustained 10% Window
514 cd/m²
296 cd/m²
Sustained 25% Window
515 cd/m²
297 cd/m²
Sustained 50% Window
515 cd/m²
297 cd/m²
Sustained 100% Window
514 cd/m²
297 cd/m²
Automatic Brightness Limiting (ABL)
0.000
0.043
Horizontal Viewing Angle
7.7
5.4
Horizontal Viewing Angle Video
Horizontal Chroma Graph
Color Washout From Left
32°
29°
Color Washout From Right
33°
29°
Horizontal Hue Graph
Color Shift From Left
47°
39°
Color Shift From Right
54°
42°
Horizontal Lightness Graph
Brightness Loss From Left
34°
30°
Brightness Loss From Right
36°
30°
Black Level Raise From Left
70°
12°
Black Level Raise From Right
70°
14°
Gamma Shift From Left
44°
12°
Gamma Shift From Right
60°
15°
Vertical Viewing Angle
7.0
4.9
Vertical Viewing Angle Video
Vertical Chroma Graph
Color Washout From Below
31°
25°
Color Washout From Above
30°
26°
Vertical Hue Graph
Color Shift From Below
39°
25°
Color Shift From Above
44°
29°
Vertical Lightness Graph
Brightness Loss From Below
34°
28°
Brightness Loss From Above
34°
29°
Black Level Raise From Below
70°
6°
Black Level Raise From Above
70°
9°
Gamma Shift From Below
32°
12°
Gamma Shift From Above
32°
15°
Gray Uniformity
8.0
8.7
50% Uniformity Picture
50% Std. Dev.
3.475%
1.852%
50% DSE
0.135%
0.119%
Black Uniformity
6.4
3.5
Native Black Uniformity Picture
Native Std. Dev.
1.749%
3.691%
Black Uniformity Picture With Local Dimming
Std. Dev. w/ L.D.
N/A
N/A
Color Accuracy (Pre-Calibration)
7.7
9.0
Pre Calibration Picture
Pre Gamma Curve Picture
Pre Color Picture
Picture Mode
sRGB
Custom
sRGB Gamut Area xy
94.6%
101.1%
White Balance dE (Avg.)
4.52
1.74
Color Temperature (Avg.)
7,181 K
6,747 K
Gamma (Avg.)
2.18
2.08
Color dE (Avg.)
2.78
2.16
Contrast Setting
N/A
75
RGB Settings
Default
50-50-50
Gamma Setting
Default
Mode 1
Brightness Setting
35
55
Measured Brightness
177 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 1
Custom
sRGB Gamut Area xy
99.5%
95.0%
White Balance dE (Avg.)
0.52
0.51
Color Temperature (Avg.)
6,490 K
6,472 K
Gamma (Avg.)
2.17
2.19
Color dE (Avg.)
0.26
0.84
Contrast Setting
49
75
RGB Settings
100-97-93
52-49-48
Gamma Setting
Gamma 2
Mode 1
Brightness Setting
11
26
Measured Brightness
100 cd/m²
100 cd/m²
SDR Color Gamut
9.4
8.5
sRGB Color Gamut Picture
sRGB Coverage xy
99.5%
95.5%
sRGB Picture Mode
Custom 1
Custom
Adobe RGB Color Gamut Picture
Adobe RGB Coverage xy
85.5%
73.2%
Adobe RGB Picture Mode
Custom 1
Custom
SDR Color Volume
9.5
7.7
sRGB Color Volume ITP Picture
sRGB In ICtCp
97.2%
79.7%
sRGB Picture Mode
Custom 1
Custom
Adobe RGB Color Volume ITP Picture
Adobe RGB In ICtCp
88.6%
67.4%
Adobe RGB Picture Mode
Custom 1
Custom
HDR Color Gamut
8.6
5.9
Wide Color Gamut
Yes
No
DCI-P3 Color Gamut Picture
DCI-P3 Coverage xy
93.4%
74.7%
DCI-P3 Picture Mode
Custom 1
Custom
Rec. 2020 Color Gamut Picture
Rec. 2020 Coverage xy
69.6%
51.9%
Rec. 2020 Picture Mode
Custom 1
Custom
HDR Color Volume
8.2
5.4
DCI-P3 Color Volume ITP Picture
DCI-P3 In ICtCp
84.3%
55.3%
DCI-P3 Picture Mode
Custom 1
Custom
Rec. 2020 Color Volume ITP Picture
Rec. 2020 In ICtCp
64.6%
42.2%
Rec. 2020 Picture Mode
Custom 1
Custom
Reflections
7.5
7.8
Average Room
Average Room Off Picture
Bright Room Off Picture
Screen Finish
Matte
Matte
Total Reflections
5.2%
5.2%
Indirect Reflections
2.9%
3.6%
Calculated Direct Reflections
2.3%
1.5%
Text Clarity
7.5
7.0
ClearType On
ClearType Off
Pixel Type
IPS
VA
Pixels
Subpixel Layout
RGB
RGB
Gradient
9.6
9.8
Gradient Picture
Color Depth
10 Bit
10 Bit
Motion
Refresh Rate
8.3
8.3
Native Refresh Rate
144 Hz
144 Hz
Max Refresh Rate
144 Hz
144 Hz
Max Refresh Rate Over DP
144 Hz
144 Hz
Max Refresh Rate Over HDMI
144 Hz
144 Hz
Max Refresh Rate Over DP @ 10-bit
120 Hz
120 Hz
Max Refresh Rate Over HDMI @ 10-Bit
60 Hz
60 Hz
Variable Refresh Rate (VRR)
FreeSync
Yes
Yes
G-SYNC
Compatible (Tested)
Compatible (Tested)
VRR Maximum
144 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
7.9
4.7
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
Speed
FreeSync On
Rise / Fall Time
4.5 ms
11.6 ms
Total Response Time
11.3 ms
21.9 ms
Overshoot Error
3.8%
0.0%
Worst 3 Rise / Fall Time
5.8 ms
23.2 ms
Worst 3 Total Response Time
18.0 ms
38.6 ms
Worst 3 Overshoot Error
17.6%
0.0%
Response Time @ 120Hz
7.6
4.5
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
Speed
FreeSync On
Rise / Fall Time
4.5 ms
12.3 ms
Total Response Time
12.8 ms
22.9 ms
Overshoot Error
7.7%
0.0%
Worst 3 Rise / Fall Time
5.7 ms
23.3 ms
Worst 3 Total Response Time
18.3 ms
38.7 ms
Worst 3 Overshoot Error
25.7%
0.0%
Response Time @ 60Hz
6.1
2.6
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
Balance
FreeSync On
Rise / Fall Time
6.3 ms
18.2 ms
Total Response Time
20.2 ms
33.3 ms
Overshoot Error
6.0%
0.0%
Worst 3 Rise / Fall Time
8.1 ms
28.3 ms
Worst 3 Total Response Time
31.4 ms
49.7 ms
Worst 3 Overshoot Error
20.7%
0.0%
Backlight Strobing (BFI)
Backlight Strobing Picture
Backlight Strobing Frequency Picture
Backlight Strobing (BFI)
Yes
Yes
Maximum Frequency
144 Hz
144 Hz
Minimum Frequency
120 Hz
144 Hz
Longest Pulse Width Brightness
151 cd/m²
147 cd/m²
Shortest Pulse Width Brightness
151 cd/m²
147 cd/m²
Pulse Width Control
No
No
Pulse Phase Control
No
No
Pulse Amplitude Control
No
No
VRR At The Same Time
No
No
Image Flicker
10
2.0
Backlight Picture
Flicker-Free
Yes
No
PWM Dimming Frequency
0 Hz
144 Hz
Inputs
Input Lag
8.9
8.8
Native Resolution @ Max Hz
3.7 ms
4.5 ms
Native Resolution @ 120Hz
4.8 ms
5.2 ms
Native Resolution @ 60Hz
9.0 ms
9.2 ms
Backlight Strobing (BFI)
7.0 ms
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
7.0
7.0
PS5 Compatibility Photo
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
Yes
VRR
No
No
Xbox Series X|S Compatibility
9.2
9.2
XSX Compatibility Photo
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
Yes
VRR
Yes
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)
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
1
1
HDR10
Yes
Yes
3.5mm Audio In
No
No
3.5mm Microphone In
No
No
USB
USB-A Ports
2
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
Yes
Yes
RGB Illumination
No
No
Multiple Input Display
No
No
KVM Switch
No
No
On-Screen Display (OSD)
OSD Picture
Check Price
27"
G27Q
SEE PRICE
Amazon.com
27"
LC27G55TQWNXZA
SEE PRICE
Amazon.com
27"
G27Q
SEE PRICE
Walmart.com
27"
LC27G55TQWNXZA
SEE PRICE
BestBuy.com
27"
G27Q
SEARCH
B&H
27"
LC27G55TQWNXZA
SEE PRICE
Walmart.com
27"
G27Q
SEARCH
BestBuy.com
27"
LC27G55TQWNXZA
SEARCH
B&H
27"
LC27G55TQWNXZA
SEARCH
Samsung.com
Gigabyte G27Q
Samsung Odyssey G55T C27G55T
Comments
Gigabyte G27Q vs Samsung Odyssey G55T C27G55T: Main Discussion
What do you think of these products? Let us know below.
Looking for a personalized buying advice from the RTINGS.com experts? Insiders have direct access to buying advice on our insider forum.