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  1. Table of Contents
  2. Top
  3. Main Differences
  4. Design
    1. Style
    2. Accelerated Longevity Test
    3. Build Quality
    4. Ergonomics
    5. Stand
    6. Display
    7. Controls
    8. In The Box
  5. Picture Quality
    1. Contrast
    2. Local Dimming
    3. SDR Brightness
    4. HDR Brightness
    5. Horizontal Viewing Angle
    6. Vertical Viewing Angle
    7. Gray Uniformity
    8. Black Uniformity
    9. Color Accuracy (Pre-Calibration)
    10. Color Accuracy (Post-Calibration)
    11. SDR Color Gamut
    12. SDR Color Volume
    13. HDR Color Gamut
    14. HDR Color Volume
    15. Reflections
    16. Text Clarity
    17. Gradient
  6. Motion
    1. Refresh Rate
    2. Variable Refresh Rate (VRR)
    3. Response Time @ Max Refresh Rate
    4. Response Time @ 120Hz
    5. Response Time @ 60Hz
    6. Backlight Strobing (BFI)
    7. Image Flicker
  7. Inputs
    1. Input Lag
    2. Resolution And Size
    3. PS5 Compatibility
    4. Xbox Series X|S Compatibility
    5. Inputs Photos
    6. Video And Audio Ports
    7. USB
    8. macOS Compatibility
  8. Features
    1. Additional Features
    2. On-Screen Display (OSD)
  9. Comments

LG 27GN800-B vs AOC CQ27G2

Side-by-Side Comparison

Products

LG 27GN800-B
AOC CQ27G2

Tested using Methodology v1.2

Updated Dec 15, 2023 02:01 PM

SEE PRICE
Amazon.com

Tested using Methodology v1.2

Updated Mar 06, 2024 09:05 PM

SEE PRICE
Walmart.com
LG 27GN800-B Picture
AOC CQ27G2 Picture

Variants

  • 27GN800-B (27")
  • CQ27G2 (27")

Our Verdict

LG 27GN800-B

AOC CQ27G2

Full comparison details regarding individual product score sets can be found in the section below

Main Differences for

Threshold 

0.10

Mixed Usage 

7.4
6.8

Ergonomics 
 

1.5
7.6

Horizontal Viewing Angle 
 

8.5
5.5

SDR Brightness 
 

7.6
6.3

Contrast 
 

5.7
8.3

Response Time @ Max Refresh Rate 
 

9.2
6.4

Full Comparison

Design

Style 
 

Design Picture  

LG 27GN800-B Design Picture
AOC CQ27G2 Design Picture

Curved 
 

No
Yes

Curve Radius 
 

Not Curved
1500R

Show text

Accelerated Longevity Test 
 

Uniformity Pictures  

Longevity Graph  

LG 27GN800-B Longevity Graph
AOC CQ27G2 Longevity Graph

Build Quality 
 

7.0
7.5

Build Quality Picture  

LG 27GN800-B Build Quality Picture
AOC CQ27G2 Build Quality Picture

Show text

Ergonomics 
 

1.5
7.6

Ergonomics Picture  

LG 27GN800-B Ergonomics Picture
AOC CQ27G2 Ergonomics Picture

Back Picture  

LG 27GN800-B Back Picture
AOC CQ27G2 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 100x100
VESA 100x100

Show text

Stand 
 

Stand Picture  

LG 27GN800-B Stand Picture
AOC CQ27G2 Stand Picture

Thickness Picture  

LG 27GN800-B Thickness Picture
AOC CQ27G2 Thickness Picture

Base Width 
 

18.6" (47.3 cm)
17.2" (43.7 cm)

Base Depth 
 

9.3" (23.5 cm)
9.1" (23.0 cm)

Thickness (With Display) 
 

6.0" (15.2 cm)
7.7" (19.5 cm)

Weight (With Display) 
 

13.4 lbs (6.1 kg)
11.9 lbs (5.4 kg)

Show text

Display 
 

Display Picture  

LG 27GN800-B Display Picture
AOC CQ27G2 Display Picture

Size 
 

27"
27"

Housing Width 
 

24.2" (61.5 cm)
24.1" (61.1 cm)

Housing Height 
 

14.4" (36.5 cm)
14.4" (36.6 cm)

Thickness (Without Stand) 
 

3.0" (7.5 cm)
2.9" (7.3 cm)

Weight (Without Stand) 
 

11.9 lbs (5.4 kg)
9.0 lbs (4.1 kg)

Borders Size (Bezels)  
 

0.3" (0.8 cm)
0.3" (0.8 cm)

Controls 
 

Controls Picture  

LG 27GN800-B Controls Picture
AOC CQ27G2 Controls Picture

Show text

In The Box 
 

In The Box Picture  

LG 27GN800-B In The Box Picture
AOC CQ27G2 In The Box Picture

Power Supply 
 

External Brick
Internal

Show text

Picture Quality

Contrast 
 

5.7
8.3

Checkerboard Picture  

LG 27GN800-B Checkerboard Picture
AOC CQ27G2 Checkerboard Picture

Native Contrast 
 

841 : 1
3,858 : 1

Contrast With Local Dimming 
 

N/A
N/A

Show text

Local Dimming 
 

0.0
0.0

Local Dimming Video  

Local Dimming 
 

No
No

Backlight 
 

Edge
Edge

Show text

SDR Brightness 
 

7.6
6.3

Real Scene 
 

304 cd/m²
225 cd/m²

Peak 2% Window 
 

328 cd/m²
196 cd/m²

Peak 10% Window 
 

329 cd/m²
196 cd/m²

Peak 25% Window 
 

329 cd/m²
197 cd/m²

Peak 50% Window 
 

330 cd/m²
197 cd/m²

Peak 100% Window 
 

330 cd/m²
197 cd/m²

Sustained 2% Window 
 

328 cd/m²
196 cd/m²

Sustained 10% Window 
 

329 cd/m²
196 cd/m²

Sustained 25% Window 
 

329 cd/m²
196 cd/m²

Sustained 50% Window 
 

330 cd/m²
197 cd/m²

Sustained 100% Window 
 

329 cd/m²
197 cd/m²

Automatic Brightness Limiting (ABL) 
 

0.000
0.000

Minimum Brightness 
 

55 cd/m²
38 cd/m²

Show text

HDR Brightness 
 

6.4
0.0

EOTF  

LG 27GN800-B EOTF
AOC CQ27G2 EOTF

VESA DisplayHDR Certification 
 

No Certification
No Certification

Real Scene 
 

346 cd/m²
N/A

Peak 2% Window 
 

371 cd/m²
N/A

Peak 10% Window 
 

373 cd/m²
N/A

Peak 25% Window 
 

372 cd/m²
N/A

Peak 50% Window 
 

373 cd/m²
N/A

Peak 100% Window 
 

372 cd/m²
N/A

Sustained 2% Window 
 

371 cd/m²
N/A

Sustained 10% Window 
 

372 cd/m²
N/A

Sustained 25% Window 
 

372 cd/m²
N/A

Sustained 50% Window 
 

372 cd/m²
N/A

Sustained 100% Window 
 

372 cd/m²
N/A

Automatic Brightness Limiting (ABL) 
 

0.000
N/A

Show text

Horizontal Viewing Angle 
 

8.5
5.5

Horizontal Viewing Angle Video  

Horizontal Chroma Graph  

LG 27GN800-B Horizontal Chroma Graph
AOC CQ27G2 Horizontal Chroma Graph

Color Washout From Left 
 

50°
25°

Color Washout From Right 
 

47°
25°

Horizontal Hue Graph  

LG 27GN800-B Horizontal Hue Graph
AOC CQ27G2 Horizontal Hue Graph

Color Shift From Left 
 

56°
41°

Color Shift From Right 
 

55°
42°

Horizontal Lightness Graph  

LG 27GN800-B Horizontal Lightness Graph
AOC CQ27G2 Horizontal Lightness Graph

Brightness Loss From Left 
 

50°
28°

Brightness Loss From Right 
 

49°
28°

Black Level Raise From Left 
 

70°
16°

Black Level Raise From Right 
 

70°
16°

Gamma Shift From Left 
 

58°
18°

Gamma Shift From Right 
 

57°
17°

Show text

Vertical Viewing Angle 
 

6.6
5.1

Vertical Viewing Angle Video  

Vertical Chroma Graph  

LG 27GN800-B Vertical Chroma Graph
AOC CQ27G2 Vertical Chroma Graph

Color Washout From Below 
 

31°
26°

Color Washout From Above 
 

31°
27°

Vertical Hue Graph  

LG 27GN800-B Vertical Hue Graph
AOC CQ27G2 Vertical Hue Graph

Color Shift From Below 
 

38°
41°

Color Shift From Above 
 

41°
40°

Vertical Lightness Graph  

LG 27GN800-B Vertical Lightness Graph
AOC CQ27G2 Vertical Lightness Graph

Brightness Loss From Below 
 

35°
29°

Brightness Loss From Above 
 

37°
30°

Black Level Raise From Below 
 

70°
11°

Black Level Raise From Above 
 

23°
11°

Gamma Shift From Below 
 

31°
11°

Gamma Shift From Above 
 

30°
10°

Show text

Gray Uniformity 
 

7.7
8.1

50% Uniformity Picture  

LG 27GN800-B 50% Uniformity Picture
AOC CQ27G2 50% Uniformity Picture

50% Std. Dev. 
 

4.072%
2.124%

50% DSE 
 

0.145%
0.152%

Show text

Black Uniformity 
 

4.5
3.0

Native Black Uniformity Picture  

LG 27GN800-B Native Black Uniformity Picture
AOC CQ27G2 Native Black Uniformity Picture

Native Std. Dev. 
 

3.033%
3.987%

Black Uniformity Picture With Local Dimming  

LG 27GN800-B Black Uniformity Picture With Local Dimming
AOC CQ27G2 Black Uniformity Picture With Local Dimming

Std. Dev. w/ L.D. 
 

N/A
N/A

Show text

Color Accuracy (Pre-Calibration) 
 

5.4
7.7

Pre Calibration Picture  

LG 27GN800-B Pre Calibration Picture
AOC CQ27G2 Pre Calibration Picture

Pre Gamma Curve Picture  

LG 27GN800-B Pre Gamma Curve Picture
AOC CQ27G2 Pre Gamma Curve Picture

Pre Color Picture  

LG 27GN800-B Pre Color Picture
AOC CQ27G2 Pre Color Picture

Picture Mode 
 

Gamer 1
Standard (sRGB)

sRGB Gamut Area xy 
 

129.7%
105.6%

White Balance dE (Avg.) 
 

5.39
4.06

Color Temperature (Avg.) 
 

6,969 K
7,316 K

Gamma (Avg.) 
 

2.13
2.31

Color dE (Avg.) 
 

4.85
2.97

Contrast Setting 
 

70
50

RGB Settings 
 

50-50-50
sRGB

Gamma Setting 
 

Mode 2
Gamma 1

Brightness Setting 
 

59
90

Measured Brightness 
 

195 cd/m²
188 cd/m²

Brightness Locked 
 

No
Yes

Show text

Color Accuracy (Post-Calibration) 
 

9.7
9.5

Post Calibration Picture  

LG 27GN800-B Post Calibration Picture
AOC CQ27G2 Post Calibration Picture

Post Gamma Curve Picture  

LG 27GN800-B Post Gamma Curve Picture
AOC CQ27G2 Post Gamma Curve Picture

Post Color Picture  

LG 27GN800-B Post Color Picture
AOC CQ27G2 Post Color Picture

Picture Mode 
 

Gamer 1
Standard (User)

sRGB Gamut Area xy 
 

100.7%
97.3%

White Balance dE (Avg.) 
 

0.74
0.68

Color Temperature (Avg.) 
 

6,469 K
6,512 K

Gamma (Avg.) 
 

2.17
2.19

Color dE (Avg.) 
 

0.41
0.62

Contrast Setting 
 

70
50

RGB Settings 
 

48-50-47
51-50-45

Gamma Setting 
 

Mode 2
Gamma 1

Brightness Setting 
 

15
38

Measured Brightness 
 

101 cd/m²
101 cd/m²

ICC Profile 
 

Show text

SDR Color Gamut 
 

9.6
9.1

sRGB Color Gamut Picture  

LG 27GN800-B sRGB Color Gamut Picture
AOC CQ27G2 sRGB Color Gamut Picture

sRGB Coverage xy 
 

100.0%
97.5%

sRGB Picture Mode 
 

Gamer 1
Standard

Adobe RGB Color Gamut Picture  

LG 27GN800-B Adobe RGB Color Gamut Picture
AOC CQ27G2 Adobe RGB Color Gamut Picture

Adobe RGB Coverage xy 
 

89.4%
81.4%

Adobe RGB Picture Mode 
 

Gamer 1
Standard

Show text

SDR Color Volume 
 

9.6
9.7

sRGB Color Volume ITP Picture  

LG 27GN800-B sRGB Color Volume ITP Picture
AOC CQ27G2 sRGB Color Volume ITP Picture

sRGB In ICtCp 
 

97.1%
99.0%

sRGB Picture Mode 
 

Gamer 1
Standard

Adobe RGB Color Volume ITP Picture  

LG 27GN800-B Adobe RGB Color Volume ITP Picture
AOC CQ27G2 Adobe RGB Color Volume ITP Picture

Adobe RGB In ICtCp 
 

91.4%
89.4%

Adobe RGB Picture Mode 
 

Gamer 1
Standard

Show text

HDR Color Gamut 
 

8.5
0.0

Wide Color Gamut 
 

Yes
N/A

DCI-P3 Color Gamut Picture  

LG 27GN800-B DCI-P3 Color Gamut Picture
AOC CQ27G2 DCI-P3 Color Gamut Picture

DCI-P3 Coverage xy 
 

93.2%
N/A

DCI-P3 Picture Mode 
 

Gamer 2
No HDR

Rec. 2020 Color Gamut Picture  

LG 27GN800-B Rec. 2020 Color Gamut Picture
AOC CQ27G2 Rec. 2020 Color Gamut Picture

Rec. 2020 Coverage xy 
 

67.6%
N/A

Rec. 2020 Picture Mode 
 

Gamer 2
No HDR

Show text

HDR Color Volume 
 

7.4
0.0

DCI-P3 Color Volume ITP Picture  

LG 27GN800-B DCI-P3 Color Volume ITP Picture
AOC CQ27G2 DCI-P3 Color Volume ITP Picture

DCI-P3 In ICtCp 
 

76.4%
N/A

DCI-P3 Picture Mode 
 

Gamer 2
No HDR

Rec. 2020 Color Volume ITP Picture  

LG 27GN800-B Rec. 2020 Color Volume ITP Picture
AOC CQ27G2 Rec. 2020 Color Volume ITP Picture

Rec. 2020 In ICtCp 
 

57.0%
N/A

Rec. 2020 Picture Mode 
 

Gamer 2
No HDR

Show text

Reflections 
 

8.2
7.4

Average Room  

LG 27GN800-B Average Room
AOC CQ27G2 Average Room

Average Room Off Picture  

LG 27GN800-B Average Room Off Picture
AOC CQ27G2 Average Room Off Picture

Bright Room Off Picture  

LG 27GN800-B Bright Room Off Picture
AOC CQ27G2 Bright Room Off Picture

Screen Finish 
 

Matte
Matte

Total Reflections 
 

4.8%
5.8%

Indirect Reflections 
 

4.1%
3.8%

Calculated Direct Reflections 
 

0.7%
2.0%

Show text

Text Clarity 
 

7.0
7.5

ClearType On  

LG 27GN800-B ClearType On
AOC CQ27G2 ClearType On

ClearType Off  

LG 27GN800-B ClearType Off
AOC CQ27G2 ClearType Off

Pixel Type 
 

IPS
VA

Pixels  

LG 27GN800-B Pixels
AOC CQ27G2 Pixels

Subpixel Layout 
 

RGB
RGB

Show text

Gradient 
 

9.8
8.2

Gradient Picture  

LG 27GN800-B Gradient Picture
AOC CQ27G2 Gradient Picture

Color Depth 
 

10 Bit
8 Bit

Show text

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 
 

144 Hz
N/A

Max Refresh Rate Over HDMI @ 10-Bit 
 

60 Hz
N/A

Variable Refresh Rate (VRR) 
 

FreeSync 
 

Yes
Yes

G-SYNC 
 

Compatible (NVIDIA Certified)
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

Show text

Response Time @ Max Refresh Rate 
 

9.2
6.4

Motion Blur Picture  

LG 27GN800-B Motion Blur Picture
AOC CQ27G2 Motion Blur Picture

Response Time Table  

LG 27GN800-B Response Time Table
AOC CQ27G2 Response Time Table

Recommended Overdrive Setting 
 

Normal
Strong

Rise / Fall Time 
 

3.2 ms
6.6 ms

Total Response Time 
 

6.1 ms
15.1 ms

Overshoot Error 
 

1.1%
1.0%

Worst 3 Rise / Fall Time 
 

4.1 ms
20.4 ms

Worst 3 Total Response Time 
 

10.0 ms
36.9 ms

Worst 3 Overshoot Error 
 

8.4%
7.8%

Show text

Response Time @ 120Hz 
 

9.0
6.5

Motion Blur Picture  

LG 27GN800-B Motion Blur Picture
AOC CQ27G2 Motion Blur Picture

Response Time Table  

LG 27GN800-B Response Time Table
AOC CQ27G2 Response Time Table

Recommended Overdrive Setting 
 

Normal
Strong

Rise / Fall Time 
 

3.2 ms
6.3 ms

Total Response Time 
 

7.2 ms
15.3 ms

Overshoot Error 
 

1.8%
1.6%

Worst 3 Rise / Fall Time 
 

4.1 ms
19.7 ms

Worst 3 Total Response Time 
 

12.2 ms
33.7 ms

Worst 3 Overshoot Error 
 

11.3%
9.8%

Show text

Response Time @ 60Hz 
 

8.1
6.1

Motion Blur Picture  

LG 27GN800-B Motion Blur Picture
AOC CQ27G2 Motion Blur Picture

Response Time Table  

LG 27GN800-B Response Time Table
AOC CQ27G2 Response Time Table

Recommended Overdrive Setting 
 

Normal
Strong

Rise / Fall Time 
 

3.3 ms
5.2 ms

Total Response Time 
 

13.3 ms
21.4 ms

Overshoot Error 
 

2.9%
5.7%

Worst 3 Rise / Fall Time 
 

4.1 ms
9.5 ms

Worst 3 Total Response Time 
 

22.6 ms
44.4 ms

Worst 3 Overshoot Error 
 

14.6%
23.1%

Show text

Backlight Strobing (BFI) 
 

Backlight Strobing Picture  

LG 27GN800-B Backlight Strobing Picture
AOC CQ27G2 Backlight Strobing Picture

Backlight Strobing Frequency Picture  

LG 27GN800-B Backlight Strobing Frequency Picture
AOC CQ27G2 Backlight Strobing Frequency Picture

Backlight Strobing (BFI) 
 

Yes
Yes

Maximum Frequency 
 

144 Hz
144 Hz

Minimum Frequency 
 

120 Hz
100 Hz

Longest Pulse Width Brightness 
 

172 cd/m²
186 cd/m²

Shortest Pulse Width Brightness 
 

172 cd/m²
68 cd/m²

Pulse Width Control 
 

No
Yes

Pulse Phase Control 
 

No
No

Pulse Amplitude Control 
 

Yes
No

VRR At The Same Time 
 

No
No

Show text

Image Flicker 
 

10
10

Backlight Picture  

LG 27GN800-B Backlight Picture
AOC CQ27G2 Backlight Picture

Flicker-Free 
 

Yes
Yes

PWM Dimming Frequency 
 

0 Hz
0 Hz

Show text

Inputs

Input Lag 
 

8.9
9.0

Native Resolution @ Max Hz 
 

4.0 ms
3.7 ms

Native Resolution @ 120Hz 
 

4.8 ms
5.0 ms

Native Resolution @ 60Hz 
 

8.9 ms
8.6 ms

Backlight Strobing (BFI) 
 

7.4 ms
5.1 ms

Show text

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 
 

311 in²
310 in²

Show text

PS5 Compatibility 
 

7.0
3.0

PS5 Compatibility Photo  

LG 27GN800-B PS5 Compatibility Photo
AOC CQ27G2 PS5 Compatibility Photo

4k @ 120Hz 
 

No
No

4k @ 60Hz 
 

Yes
No

1440p @ 120Hz 
 

Yes
Yes

1440p @ 60Hz 
 

Yes
Yes

1080p @ 120Hz 
 

Yes
Yes

1080p @ 60Hz 
 

Yes
Yes

HDR 
 

Yes
No

VRR 
 

No
No

Show text

Xbox Series X|S Compatibility 
 

9.2
5.8

XSX Compatibility Photo  

LG 27GN800-B XSX Compatibility Photo
AOC CQ27G2 XSX Compatibility Photo

4k @ 120Hz 
 

No
No

4k @ 60Hz 
 

Yes
No

1440p @ 120Hz 
 

Yes
Yes

1440p @ 60Hz 
 

Yes
Yes

1080p @ 120Hz 
 

Yes
Yes

1080p @ 60Hz 
 

Yes
Yes

HDR 
 

Yes
No

VRR 
 

Yes
Yes

Show text

Inputs Photos  

Inputs 1  

LG 27GN800-B Inputs 1
AOC CQ27G2 Inputs 1

Inputs 2  

LG 27GN800-B Inputs 2
AOC CQ27G2 Inputs 2

Video And Audio Ports 
 

DisplayPort 
 

1 (DP 1.4)
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
No HDMI 2.1

DVI 
 

No
No

VGA 
 

No
No

Daisy Chaining 
 

No
No

3.5mm Audio Out 
 

1
1

HDR10 
 

Yes
No

3.5mm Audio In 
 

No
No

3.5mm Microphone In 
 

No
No

Show text

USB 
 

USB-A Ports 
 

1 (Service Port Only)
0

USB-A Rated Speed 
 

480Mbps (USB 2.0)
No USB-A Ports

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  

LG 27GN800-B macOS Screenshot
AOC CQ27G2 macOS Screenshot

Show text

Features

Additional Features 
 

Speakers 
 

No
No

RGB Illumination 
 

No
No

Multiple Input Display 
 

No
No

KVM Switch 
 

No
No

Show text

On-Screen Display (OSD) 
 

OSD Picture  

LG 27GN800-B OSD Picture
AOC CQ27G2 OSD Picture

LG 27GN800-B

AOC CQ27G2

Comments

  1. Comparison

LG 27GN800-B vs AOC CQ27G2: Main Discussion

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