Products
Gigabyte M27Q (rev. 1.0)
Samsung Odyssey G55C S27CG55
Tested using Methodology v2.0.1
Updated Jul 14, 2025 03:01 PM
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Tested using Methodology v2.0.1
Updated Aug 11, 2025 04:09 PM
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Max Refresh Rate
170 Hz
Size
27"
Pixel Type
IPS
Native Resolution
2560 x 1440
Max Refresh Rate
165 Hz
Size
27"
Pixel Type
VA
Native Resolution
2560 x 1440
Our Verdict
Gigabyte M27Q (rev. 1.0)
Samsung Odyssey G55C S27CG55
The Gigabyte M27Q (rev. 1.0) and the Samsung Odyssey G55C S27CG55 are different types of entry-level gaming monitors, mainly due to their panel types and features. The Gigabyte is more well-rounded, with wider viewing angles and better motion handling, so it's better for gaming. The Gigabyte also has extra productivity perks like a USB-C port and a KVM switch that makes it easy to use two computers connected to the monitor with the same keyboard and mouse. On the other hand, the Samsung is the better choice if you want to use it in a dark room, as it has a higher contrast ratio.
Variants
- M27Q (rev. 1.0) (27")
- LS27CG552ENXZA (27")
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27"
M27Q (rev. 1.0)
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27"
LS27CG552ENXZA
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27"
M27Q (rev. 1.0)
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27"
LS27CG552ENXZA
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27"
M27Q (rev. 1.0)
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27"
LS27CG552ENXZA
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27"
M27Q (rev. 1.0)
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27"
LS27CG552ENXZA
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27"
LS27CG552ENXZA
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Main Differences for
PC Gaming
PC Gaming
Threshold
PC Gaming
7.1
6.1
VRR Motion Performance
7.4
3.7
Refresh Rate Compliance
7.2
4.8
CAD @ Max Refresh Rate
7.8
5.3
Input Lag
9.0
7.6
CAD @ 120Hz
7.2
5.3
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
7.0
2.5
Ergonomics Picture
Back Picture
Height Adjustment
5.1" (13.0 cm)
0.0" (0.0 cm)
Min Height To Top Of Panel
15.6" (39.5 cm)
22.1" (56.2 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)
21.9" (55.5 cm)
Base Depth
7.4" (18.8 cm)
11.2" (28.5 cm)
Thickness (With Display)
5.8" (14.8 cm)
9.3" (23.5 cm)
Weight (With Display)
13.7 lbs (6.2 kg)
9.3 lbs (4.2 kg)
Display
Display Picture
Size
27"
27"
Housing Width
24.2" (61.5 cm)
24.2" (61.5 cm)
Housing Height
14.4" (36.7 cm)
15.0" (38.0 cm)
Thickness (Without Stand)
1.7" (4.3 cm)
4.7" (12.0 cm)
Weight (Without Stand)
9.0 lbs (4.1 kg)
8.4 lbs (3.8 kg)
Borders Size (Bezels)
0.3" (0.8 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
6.3
7.8
Checkerboard Picture
Native Contrast
1,184 : 1
2,922 : 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
7.8
Real Scene
434 cd/m²
319 cd/m²
Peak 2% Window
422 cd/m²
334 cd/m²
Peak 10% Window
423 cd/m²
335 cd/m²
Peak 25% Window
423 cd/m²
335 cd/m²
Peak 50% Window
423 cd/m²
335 cd/m²
Peak 100% Window
423 cd/m²
336 cd/m²
Sustained 2% Window
422 cd/m²
334 cd/m²
Sustained 10% Window
422 cd/m²
335 cd/m²
Sustained 25% Window
423 cd/m²
335 cd/m²
Sustained 50% Window
422 cd/m²
335 cd/m²
Sustained 100% Window
423 cd/m²
335 cd/m²
Automatic Brightness Limiting (ABL)
0.000
0.000
Minimum Brightness
43 cd/m²
38 cd/m²
HDR Brightness
6.9
6.3
EOTF
VESA DisplayHDR Certification
DisplayHDR 400 - 1.0/1.1
No Certification
Real Scene
443 cd/m²
327 cd/m²
Peak 2% Window
432 cd/m²
342 cd/m²
Peak 10% Window
434 cd/m²
342 cd/m²
Peak 25% Window
434 cd/m²
342 cd/m²
Peak 50% Window
434 cd/m²
342 cd/m²
Peak 100% Window
435 cd/m²
342 cd/m²
Sustained 2% Window
432 cd/m²
342 cd/m²
Sustained 10% Window
432 cd/m²
342 cd/m²
Sustained 25% Window
433 cd/m²
342 cd/m²
Sustained 50% Window
434 cd/m²
342 cd/m²
Sustained 100% Window
434 cd/m²
342 cd/m²
Automatic Brightness Limiting (ABL)
0.000
0.000
Horizontal Viewing Angle
8.0
5.3
Horizontal Viewing Angle Video
Horizontal Chroma Graph
Color Washout From Left
37°
30°
Color Washout From Right
39°
26°
Horizontal Hue Graph
Color Shift From Left
69°
40°
Color Shift From Right
70°
36°
Horizontal Lightness Graph
Brightness Loss From Left
44°
31°
Brightness Loss From Right
46°
28°
Black Level Raise From Left
70°
14°
Black Level Raise From Right
70°
11°
Gamma Shift From Left
39°
15°
Gamma Shift From Right
40°
12°
Vertical Viewing Angle
8.0
4.9
Vertical Viewing Angle Video
Vertical Chroma Graph
Color Washout From Below
34°
25°
Color Washout From Above
37°
25°
Vertical Hue Graph
Color Shift From Below
65°
26°
Color Shift From Above
70°
26°
Vertical Lightness Graph
Brightness Loss From Below
35°
29°
Brightness Loss From Above
38°
29°
Black Level Raise From Below
62°
8°
Black Level Raise From Above
70°
7°
Gamma Shift From Below
47°
14°
Gamma Shift From Above
59°
13°
Gray Uniformity
7.9
8.4
50% Uniformity Picture
50% Std. Dev.
2.723%
1.735%
50% DSE
0.152%
0.141%
Black Uniformity
5.5
3.9
Native Black Uniformity Picture
Native Std. Dev.
2.333%
3.384%
Black Uniformity Picture With Local Dimming
Std. Dev. w/ L.D.
N/A
N/A
Color Accuracy (Pre-Calibration)
8.7
8.1
Pre Calibration Picture
Pre Gamma Curve Picture
Pre Color Picture
Picture Mode
sRGB
Original
sRGB Gamut Area xy
100.3%
101.2%
White Balance dE (Avg.)
3.14
4.39
Color Temperature (Avg.)
7,159 K
7,393 K
Gamma (Avg.)
2.25
2.13
Color dE (Avg.)
2.19
3.02
Contrast Setting
N/A
50
RGB Settings
Locked
0-0-0
Gamma Setting
Locked
0
Brightness Setting
18
50
Measured Brightness
110 cd/m²
371 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
Original
sRGB Gamut Area xy
99.8%
99.4%
White Balance dE (Avg.)
0.53
0.48
Color Temperature (Avg.)
6,485 K
6,510 K
Gamma (Avg.)
2.18
2.18
Color dE (Avg.)
0.31
2.25
Contrast Setting
47
48
RGB Settings
99-100-92
7-3-(-13)
Gamma Setting
Gamma 3
0
Brightness Setting
15
9
Measured Brightness
100 cd/m²
99 cd/m²
SDR Color Gamut
9.8
9.1
sRGB Color Gamut Picture
sRGB Coverage xy
99.7%
99.1%
sRGB Picture Mode
Custom 1
Original
Adobe RGB Color Gamut Picture
Adobe RGB Coverage xy
97.5%
76.5%
Adobe RGB Picture Mode
Custom 1
Original
HDR Color Gamut
8.4
6.1
Wide Color Gamut
Yes
No
DCI-P3 Color Gamut Picture
DCI-P3 Coverage xy
92.5%
76.5%
DCI-P3 Picture Mode
Custom 1
Graphics
Rec. 2020 Color Gamut Picture
Rec. 2020 Coverage xy
73.9%
54.8%
Rec. 2020 Picture Mode
Custom 1
Graphics
HDR Color Volume
7.2
6.1
DCI-P3 Color Volume ITP Picture
1,000 cd/m² DCI-P3 Coverage ICtCp
61.8%
46.3%
DCI-P3 Picture Mode
Custom 1
Graphics
Rec. 2020 Color Volume ITP Picture
10,000 cd/m² Rec. 2020 Coverage ICtCp
27.9%
19.9%
Rec. 2020 Picture Mode
Custom 1
Graphics
Text Clarity
7.0
7.5
ClearType On
ClearType Off
Pixel Type
IPS
VA
Pixels
Subpixel Layout
BGR
RGB
Reflections
7.3
7.2
Average Room
Average Room Off Picture
Bright Room Off Picture
Screen Finish
Matte
Matte
Total Reflections
5.4%
5.8%
Indirect Reflections
2.5%
3.2%
Calculated Direct Reflections
2.8%
2.6%
Gradient
9.5
9.8
Gradient Picture
Color Depth
10 Bit
10 Bit
Motion
Refresh Rate
7.6
7.5
Native Refresh Rate
170 Hz
165 Hz
Max Refresh Rate
170 Hz
165 Hz
Max Refresh Rate Over DP
170 Hz
165 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)
Variable Refresh Rate
Yes
Yes
FreeSync
Yes
Yes
G-SYNC
Compatible (Tested)
Compatible (Tested)
VRR Maximum
170 Hz
165 Hz
VRR Minimum
< 20 Hz
< 20 Hz
VRR Supported Connectors
DisplayPort, HDMI
DisplayPort, HDMI
VRR Motion Performance
7.4
3.7
Pursuit Photo VRR
OD Mode CAD Comparison
Recommended VRR OD Setting
Picture Quality
Adaptive-Sync
Variable Overdrive Advertised
Yes
No
Avg. CAD
207
491
Best CAD
205
460
Worst CAD
208
542
Refresh Rate Compliance
7.2
4.8
Fast GTG Sequence
VRR Compliance
Compliance @ Max Hz
44%
31%
Compliance @ 120 FPS
56%
40%
Compliance @ 60 FPS
76%
58%
CAD @ Max Refresh Rate
7.8
5.3
Pursuit Photo At Max Refresh
CAD Heatmap At Max Refresh
OD Transition Max Refresh Rate
OD balance
0 to 31
OD extreme
0 to 31
Recommended Overdrive Setting
Balance
Extreme
Avg. CAD
153
295
Best 10% CAD
86
91
Worst 10% CAD
258
680
Response Time @ Max Refresh Rate
First Response Time
4.2 ms
13.2 ms
Total Response Time
9.1 ms
14.4 ms
Recommended Overdrive Setting
Balance
Extreme
RGB Overshoot
10 RGB
2 RGB
Worst 10% RGB Overshoot
24 RGB
14 RGB
Worst 10% First Response Time
11.3 ms
33.0 ms
Worst 10% Total Response Time
13.0 ms
33.0 ms
Heatmap First Response
Heatmap Total Response
Heatmap RGB Overshoot
CAD @ 120Hz
7.2
5.3
Pursuit Photo 120Hz
CAD Heatmap 120Hz
OD Transition 120Hz
OD balance
0 to 31
OD extreme
0 to 31
Recommended Overdrive Setting
Picture Quality
Extreme
Avg. CAD
207
299
Best 10% CAD
115
90
Worst 10% CAD
297
688
Response Time @ 120Hz
Worst 10% First Response Time
13.0 ms
33.6 ms
RGB Overshoot
0 RGB
2 RGB
Total Response Time
9.2 ms
14.5 ms
First Response Time
9.2 ms
13.4 ms
Recommended Overdrive Setting
Picture Quality
Extreme
Worst 10% Total Response Time
13.0 ms
33.6 ms
Worst 10% RGB Overshoot
0 RGB
13 RGB
120Hz First Response Heatmap
120Hz Total Response Heatmap
120Hz Heatmap RGB Overshoot
CAD @ 60Hz
7.1
5.4
Pursuit Photo 60Hz
CAD Heatmap 60Hz
OD Transition 60Hz
OD balance
0 to 31
OD extreme
0 to 31
Recommended Overdrive Setting
Picture Quality
Extreme
Avg. CAD
210
290
Best 10% CAD
130
89
Worst 10% CAD
301
653
Response Time @ 60Hz
Recommended Overdrive Setting
Picture Quality
Extreme
First Response Time
10.0 ms
12.6 ms
Total Response Time
10.0 ms
13.8 ms
RGB Overshoot
0 RGB
2 RGB
Worst 10% Total Response Time
16.1 ms
29.6 ms
Worst 10% First Response Time
16.1 ms
29.6 ms
Worst 10% RGB Overshoot
0 RGB
13 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
170 Hz
165 Hz
Minimum Frequency
80 Hz
165 Hz
Longest Pulse Width Brightness
175 cd/m²
120 cd/m²
Shortest Pulse Width Brightness
175 cd/m²
120 cd/m²
Pulse Width Control
No
No
Pulse Phase Control
No
No
Pulse Amplitude Control
No
No
VRR At The Same Time
Yes
No
VRR Flicker
9.1
4.0
VRR Flicker Video
VRR Flicker Graph
Dark Gray Flicker
0.8 RGB
3.3 RGB
Middle Gray Flicker
0.3 RGB
4.0 RGB
Light Gray Flicker
0.2 RGB
2.9 RGB
Image Flicker
10
10
Backlight Picture
Flicker-Free
Yes
Yes
PWM Dimming Frequency
0 Hz
0 Hz
Inputs
Input Lag
9.0
7.6
Native Resolution @ Max Hz
3.2 ms
12.9 ms
Native Resolution @ 120Hz
4.9 ms
5.0 ms
Native Resolution @ 60Hz
8.5 ms
25.4 ms
Backlight Strobing (BFI)
3.9 ms
16.0 ms
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
4.9
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 Photos
Inputs 1
Inputs 2
Video And Audio Ports
DisplayPort
1 (DP 1.2)
1 (DP 1.2)
DisplayPort Transmission Bandwidth
No DisplayPort 2.1
No DisplayPort 2.1
Mini DisplayPort
No
No
HDMI
2 (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
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
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
10W
No USB-C Ports
USB-C DisplayPort Alt Mode
Yes
No USB-C Ports
Thunderbolt
No
No
macOS Compatibility
macOS Screenshot
Features
Additional Features
HDR10
Yes
Yes
Speakers
No
No
RGB Illumination
No
No
Multiple Input Display
PIP + PBP
No
KVM Switch
Yes
No
On-Screen Display (OSD)
OSD Picture
Check Price
27"
M27Q (rev. 1.0)
SEARCH
Amazon.com
27"
LS27CG552ENXZA
SEE PRICE
Amazon.com
27"
M27Q (rev. 1.0)
SEARCH
B&H
27"
LS27CG552ENXZA
SEE PRICE
Samsung.com
27"
M27Q (rev. 1.0)
SEARCH
BestBuy.com
27"
LS27CG552ENXZA
SEE PRICE
Walmart.com
27"
M27Q (rev. 1.0)
SEARCH
Walmart.com
27"
LS27CG552ENXZA
SEARCH
B&H
27"
LS27CG552ENXZA
SEARCH
BestBuy.com
Gigabyte M27Q (rev. 1.0)
Samsung Odyssey G55C S27CG55
Comments
Gigabyte M27Q (rev. 1.0) vs Samsung Odyssey G55C S27CG55: Main Discussion
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