Products
Samsung C27RG5
AOC CQ27G2
Tested using Methodology v1.1
Updated Jun 07, 2024 06:14 PM
SEE PRICE
Amazon.com
Tested using Methodology v1.2
Updated Jun 13, 2025 08:56 PM
SEE PRICE
Walmart.com
Max Refresh Rate
240 Hz
Size
27"
Pixel Type
VA
Variable Refresh Rate
Adaptive Sync
HDR10
No
Native Resolution
1920 x 1080
Max Refresh Rate
144 Hz
Size
27"
Pixel Type
VA
Variable Refresh Rate
Yes
HDR10
No
Native Resolution
2560 x 1440
Our Verdict
Samsung C27RG5
AOC CQ27G2
The AOC CQ27G2 is much better than the Samsung C27RG5. The AOC has better ergonomics, a higher-resolution screen, and a much faster response time. The AOC is more versatile, as the variable refresh rate (VRR) feature is available over HDMI and DisplayPort, and it has an optional black frame insertion feature. The Samsung we tested has much better black uniformity, but this varies between units.
Variants
- C27RG5 (27")
- CQ27G2 (27")
Check Price
27"
C27RG5
SEE PRICE
Amazon.com
27"
CQ27G2
SEE PRICE
Walmart.com
27"
C27RG5
SEE PRICE
BestBuy.com
27"
CQ27G2
SEE PRICE
Amazon.com
27"
C27RG5
SEE PRICE
Walmart.com
27"
CQ27G2
SEARCH
B&H
27"
C27RG5
SEARCH
B&H
27"
CQ27G2
SEARCH
BestBuy.com
27"
C27RG5
SEARCH
Samsung.com
Main Differences for
Mixed Usage
Mixed Usage
Threshold
Mixed Usage
6.7
6.8
Ergonomics
1.1
7.6
Resolution And Size
7.1
8.0
Black Uniformity
7.1
3.0
Response Time @ Max Refresh Rate
3.3
6.4
SDR Peak Brightness
7.5
6.3
Full Comparison
Design
Style
Design Picture
Curved
Yes
Yes
Curve Radius
1500R
1500R
Size
27"
27"
Weight (without stand)
8.4 lbs (3.8 kg)
9.0 lbs (4.1 kg)
Weight (with stand)
10.1 lbs (4.6 kg)
11.9 lbs (5.4 kg)
Accelerated Longevity Test
Uniformity Pictures
Longevity Graph
Build Quality
6.5
7.5
Build Quality Picture
Ergonomics
1.1
7.6
Ergonomics Picture
Back Picture
Height Adjustment
0.0" (0.0 cm)
5.1" (13.0 cm)
Tilt Range
-15° to 2.5°
-20° to 5°
Rotate Portrait/Landscape
No
No
Swivel Range
No swivel
-30° to 30°
Wall Mount
VESA 75x75
VESA 100x100
Stand
Stand Picture
Thickness Picture
Base Width
18.5" (47.1 cm)
17.2" (43.7 cm)
Base Depth
9.8" (24.9 cm)
9.1" (23.0 cm)
Thickness (With Display)
8.6" (21.9 cm)
7.7" (19.5 cm)
Weight (With Display)
10.1 lbs (4.6 kg)
11.9 lbs (5.4 kg)
Display
Display Picture
Size
27"
27"
Housing Width
24.1" (61.1 cm)
Housing Height
14.4" (36.6 cm)
Thickness (Without Stand)
3.4" (8.6 cm)
2.9" (7.3 cm)
Weight (Without Stand)
8.4 lbs (3.8 kg)
9.0 lbs (4.1 kg)
Borders Size (Bezels)
0.4" (0.9 cm)
0.3" (0.8 cm)
Controls
Controls Picture
In The Box
In The Box Picture
Power Supply
External Brick
Internal
Back
Back Picture
Wall Mount
VESA 75x75
VESA 100x100
Borders
Borders Picture
Borders
0.4" (0.9 cm)
0.3" (0.8 cm)
Thickness
Thickness Picture
Thickness (with stand)
8.6" (21.9 cm)
7.7" (19.5 cm)
Thickness (without stand)
3.4" (8.6 cm)
2.9" (7.3 cm)
Picture Quality
Contrast
8.0
8.3
Checkerboard Picture
Native Contrast
3,305 : 1
3,858 : 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
7.5
6.3
Real Scene
302 cd/m²
225 cd/m²
Peak 2% Window
299 cd/m²
196 cd/m²
Peak 10% Window
299 cd/m²
196 cd/m²
Peak 25% Window
300 cd/m²
197 cd/m²
Peak 50% Window
299 cd/m²
197 cd/m²
Peak 100% Window
299 cd/m²
197 cd/m²
Sustained 2% Window
299 cd/m²
196 cd/m²
Sustained 10% Window
299 cd/m²
196 cd/m²
Sustained 25% Window
299 cd/m²
196 cd/m²
Sustained 50% Window
299 cd/m²
197 cd/m²
Sustained 100% Window
299 cd/m²
197 cd/m²
Automatic Brightness Limiting (ABL)
0.000
0.000
Minimum Brightness
38 cd/m²
HDR Brightness
0.0
0.0
EOTF
VESA DisplayHDR Certification
No Certification
Real Scene
N/A
N/A
Peak 2% Window
N/A
N/A
Peak 10% Window
N/A
N/A
Peak 25% Window
N/A
N/A
Peak 50% Window
N/A
N/A
Peak 100% Window
N/A
N/A
Sustained 2% Window
N/A
N/A
Sustained 10% Window
N/A
N/A
Sustained 25% Window
N/A
N/A
Sustained 50% Window
N/A
N/A
Sustained 100% Window
N/A
N/A
Automatic Brightness Limiting (ABL)
N/A
N/A
Horizontal Viewing Angle
6.0
5.5
Horizontal Viewing Angle Video
Horizontal Chroma Graph
Color Washout From Left
29°
25°
Color Washout From Right
31°
25°
Horizontal Hue Graph
Color Shift From Left
54°
41°
Color Shift From Right
56°
42°
Horizontal Lightness Graph
Brightness Loss From Left
34°
28°
Brightness Loss From Right
35°
28°
Black Level Raise From Left
12°
16°
Black Level Raise From Right
13°
16°
Gamma Shift From Left
20°
18°
Gamma Shift From Right
21°
17°
Vertical Viewing Angle
5.7
5.1
Vertical Viewing Angle Video
Vertical Chroma Graph
Color Washout From Below
28°
26°
Color Washout From Above
27°
27°
Vertical Hue Graph
Color Shift From Below
51°
41°
Color Shift From Above
55°
40°
Vertical Lightness Graph
Brightness Loss From Below
31°
29°
Brightness Loss From Above
30°
30°
Black Level Raise From Below
11°
11°
Black Level Raise From Above
9°
11°
Gamma Shift From Below
18°
11°
Gamma Shift From Above
19°
10°
Gray Uniformity
8.7
8.1
50% Uniformity Picture
50% Std. Dev.
3.218%
2.124%
50% DSE
0.097%
0.152%
5% Uniformity Picture
5% Std. Dev.
0.539%
5% DSE
0.060%
Black Uniformity
7.1
3.0
Native Black Uniformity Picture
Native Std. Dev.
1.276%
3.987%
Black Uniformity Picture With Local Dimming
Std. Dev. w/ L.D.
N/A
N/A
Color Accuracy (Pre-Calibration)
7.5
7.7
Pre Calibration Picture
Pre Gamma Curve Picture
Pre Color Picture
Picture Mode
Custom
Standard (sRGB)
sRGB Gamut Area xy
105.6%
White Balance dE (Avg.)
3.26
4.06
Color Temperature (Avg.)
6,289 K
7,316 K
Gamma (Avg.)
2.09
2.31
Color dE (Avg.)
2.67
2.97
Contrast Setting
75
50
RGB Settings
50-50-50
sRGB
Gamma Setting
Mode 1
Gamma 1
Brightness Setting
100
90
Measured Brightness
312 cd/m²
188 cd/m²
Brightness Locked
Yes
Color Accuracy (Post-Calibration)
9.5
9.5
Post Calibration Picture
Post Gamma Curve Picture
Post Color Picture
Picture Mode
Custom
Standard (User)
sRGB Gamut Area xy
97.3%
White Balance dE (Avg.)
0.51
0.68
Color Temperature (Avg.)
6,486 K
6,512 K
Gamma (Avg.)
2.18
2.19
Color dE (Avg.)
0.78
0.62
Contrast Setting
70
50
RGB Settings
47-53-52
51-50-45
Gamma Setting
Mode 1
Gamma 1
Brightness Setting
19
38
Measured Brightness
100 cd/m²
101 cd/m²
ICC Profile
SDR Color Gamut
8.6
9.1
sRGB Color Gamut Picture
sRGB Coverage xy
95.2%
97.5%
sRGB Picture Mode
Custom
Standard
Adobe RGB Color Gamut Picture
Adobe RGB Coverage xy
76.4%
81.4%
Adobe RGB Picture Mode
Custom
Standard
SDR Color Volume
9.0
9.7
sRGB Color Volume ITP Picture
sRGB In ICtCp
97.3%
99.0%
sRGB Picture Mode
Custom
Standard
Adobe RGB Color Volume ITP Picture
Adobe RGB In ICtCp
82.0%
89.4%
Adobe RGB Picture Mode
Custom
Standard
HDR Color Gamut
0.0
0.0
Wide Color Gamut
N/A
N/A
DCI-P3 Color Gamut Picture
DCI-P3 Coverage xy
N/A
DCI-P3 Picture Mode
No HDR
No HDR
Rec. 2020 Color Gamut Picture
Rec. 2020 Coverage xy
N/A
N/A
Rec. 2020 Picture Mode
No HDR
No HDR
DCI P3 xy
N/A
HDR Color Volume
0.0
0.0
DCI-P3 Color Volume ITP Picture
DCI-P3 In ICtCp
N/A
N/A
DCI-P3 Picture Mode
No HDR
No HDR
Rec. 2020 Color Volume ITP Picture
Rec. 2020 In ICtCp
N/A
N/A
Rec. 2020 Picture Mode
No HDR
No HDR
Image Retention
9.0
Image Retention Picture
IR After 0 Min Recovery
0.37%
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
7.5
7.4
Average Room
Average Room Off Picture
Bright Room Off Picture
Screen Finish
Matte
Matte
Total Reflections
5.4%
5.8%
Indirect Reflections
3.2%
3.8%
Calculated Direct Reflections
2.2%
2.0%
Text Clarity
6.5
7.5
ClearType On
ClearType Off
Pixel Type
VA
VA
Pixels
Subpixel Layout
RGB
RGB
Gradient
7.9
8.2
Gradient Picture
Color Depth
8 Bit
8 Bit
Color Bleed
10
Color Bleed Horizontal
Pixel Row Error
0.001%
Color Bleed Vertical
Pixel Column Error
0.002%
Motion
Refresh Rate
8.3
Native Refresh Rate
240 Hz
144 Hz
Max Refresh Rate
240 Hz
144 Hz
Max Refresh Rate Over DP
144 Hz
Max Refresh Rate Over HDMI
144 Hz
Max Refresh Rate Over DP @ 10-bit
N/A
Max Refresh Rate Over HDMI @ 10-Bit
N/A
Variable Refresh Rate (VRR)
FreeSync
Compatible (Tested)
Yes
G-SYNC
Compatible (NVIDIA Certified)
Compatible (Tested)
VRR Maximum
240 Hz
144 Hz
VRR Minimum
< 20 Hz
< 20 Hz
VRR Supported Connectors
DisplayPort
DisplayPort, HDMI
Variable Refresh Rate
Adaptive Sync
Yes
Native
240 Hz
144 Hz
Max Refresh Rate
240 Hz
144 Hz
Variable Refresh Rate
Yes
Response Time @ Max Refresh Rate
3.3
6.4
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
Adaptive Sync
Strong
Rise / Fall Time
13.7 ms
6.6 ms
Total Response Time
34.5 ms
15.1 ms
Overshoot Error
0.1%
1.0%
Worst 3 Rise / Fall Time
25.3 ms
20.4 ms
Worst 3 Total Response Time
44.3 ms
36.9 ms
Worst 3 Overshoot Error
0.0%
7.8%
Response Time @ 120Hz
6.5
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
Strong
Rise / Fall Time
6.3 ms
Total Response Time
15.3 ms
Overshoot Error
1.6%
Worst 3 Rise / Fall Time
19.7 ms
Worst 3 Total Response Time
33.7 ms
Worst 3 Overshoot Error
9.8%
Response Time @ 60Hz
3.5
6.1
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
Adaptive Sync
Strong
Rise / Fall Time
13.3 ms
5.2 ms
Total Response Time
33.8 ms
21.4 ms
Overshoot Error
0.1%
5.7%
Worst 3 Rise / Fall Time
24.6 ms
9.5 ms
Worst 3 Total Response Time
42.5 ms
44.4 ms
Worst 3 Overshoot Error
0.0%
23.1%
Backlight Strobing (BFI)
Backlight Strobing Picture
Backlight Strobing Frequency Picture
Backlight Strobing (BFI)
No BFI
Yes
Maximum Frequency
N/A
144 Hz
Minimum Frequency
N/A
100 Hz
Longest Pulse Width Brightness
186 cd/m²
Shortest Pulse Width Brightness
68 cd/m²
Pulse Width Control
Yes
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
>1000 Hz
0 Hz
Inputs
Input Lag
9.5
9.0
Native Resolution @ Max Hz
3.3 ms
3.7 ms
Native Resolution @ 120Hz
5.0 ms
Native Resolution @ 60Hz
21.7 ms
8.6 ms
Variable Refresh Rate
4.6 ms
Variable Refresh Rate @ 60Hz
21.5 ms
10 Bit HDR
N/A
Backlight Strobing (BFI)
N/A
5.1 ms
Resolution And Size
7.1
8.0
Native Resolution
1920 x 1080
2560 x 1440
Aspect Ratio
16:9
16:9
Megapixels
2.1 MP
3.7 MP
Pixel Density
82 PPI
109 PPI
Measured Screen Diagonal
27.0"
27.0"
Screen Area
310 in²
310 in²
PS5 Compatibility
3.0
PS5 Compatibility Photo
4k @ 120Hz
No
4k @ 60Hz
No
1440p @ 120Hz
Yes
1440p @ 60Hz
Yes
1080p @ 120Hz
Yes
1080p @ 60Hz
Yes
HDR
No
VRR
No
Xbox Series X|S Compatibility
5.8
XSX Compatibility Photo
4k @ 120Hz
No
4k @ 60Hz
No
1440p @ 120Hz
Yes
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
No
3.5mm Audio In
No
3.5mm Microphone In
No
No
DisplayPort Out
No
USB
1 (USB 2.0)
0
USB C
No
0
Digital Optical Audio Out
No
Analog Audio Out RCA
No
Power Supply
External Brick
Internal
USB
USB-A Ports
1 (USB 2.0)
0
USB-A Rated Speed
No USB-A Ports
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
No
No
Multiple Input Display
No
No
KVM Switch
No
HDR10
No
No
On-Screen Display (OSD)
OSD Picture
Controls
Controls Picture
In The Box
In The Box Picture
Check Price
27"
C27RG5
SEE PRICE
Amazon.com
27"
CQ27G2
SEE PRICE
Walmart.com
27"
C27RG5
SEE PRICE
BestBuy.com
27"
CQ27G2
SEE PRICE
Amazon.com
27"
C27RG5
SEE PRICE
Walmart.com
27"
CQ27G2
SEARCH
B&H
27"
C27RG5
SEARCH
B&H
27"
CQ27G2
SEARCH
BestBuy.com
27"
C27RG5
SEARCH
Samsung.com
Samsung C27RG5
AOC CQ27G2
Comments
Samsung C27RG5 vs AOC CQ27G2: 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.