Products
LG 27GL850-B/27GL83A-B
MSI Optix MAG271CQR
Tested using Methodology v2.1.1
Updated Nov 07, 2025 02:36 PM
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Amazon.com
Tested using Methodology v1.1
Updated Jun 07, 2024 06:57 PM
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Amazon.com
Max Refresh Rate
144 Hz
Size
27"
Pixel Type
IPS
Native Resolution
2560 x 1440
Variable Refresh Rate
Yes
Max Refresh Rate
144 Hz
Size
27"
Pixel Type
VA
Native Resolution
2560 x 1440
Variable Refresh Rate
FreeSync
Our Verdict
LG 27GL850-B/27GL83A-B
MSI Optix MAG271CQR
The LG 27GL850-B/27GL83A-B and the MSI Optix MAG271CQR use different panel technologies, each with their own strengths and weaknesses. The MSI looks better in a dark room, as it has better contrast, but the LG has better viewing angles, and it supports HDR. The Optix has an optional black frame insertion feature, and it has better reflection handling.
Variants
- 27GL850-B (27")
- 27GL83A-B (27")
- Optix MAG271CQR (27")
Check Price
27"
27GL850-B
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Amazon.com
27"
Optix MAG271CQR
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Amazon.com
27"
27GL83A-B
SEE PRICE
Amazon.com
27"
Optix MAG271CQR
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BestBuy.com
27"
Optix MAG271CQR
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Walmart.com
27"
Optix MAG271CQR
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Main Differences for
Mixed Usage
Mixed Usage
Threshold
Mixed Usage
7.2
Full Comparison
Design
Style
Design Picture
Curved
No
Yes
Curve Radius
Not Curved
1800R
Size
27"
27"
Weight (without stand)
9.0 lbs (4.1 kg)
12.3 lbs (5.6 kg)
Weight (with stand)
13.2 lbs (6.0 kg)
17.6 lbs (8.0 kg)
Build Quality
7.0
8.0
Build Quality Picture
Ergonomics
7.4
5.4
Ergonomics Picture
Back Picture
Height Adjustment
4.1" (10.5 cm)
5.3" (13.5 cm)
Min Height To Top Of Panel
17.9" (45.5 cm)
Tilt Range
-15° to 5°
-20° to 5°
Rotate Portrait/Landscape
Yes, Clockwise
No
Swivel Range
No swivel
No swivel
Wall Mount
VESA 100x100
VESA 100x100
Stand
Stand Picture
Thickness Picture
Base Width
18.9" (48.0 cm)
18.4" (46.7 cm)
Base Depth
9.4" (23.9 cm)
11.2" (28.4 cm)
Thickness (With Display)
6.5" (16.5 cm)
8.1" (20.6 cm)
Weight (With Display)
13.2 lbs (6.0 kg)
17.6 lbs (8.0 kg)
Display
Display Picture
Size
27"
27"
Housing Width
24.2" (61.4 cm)
Housing Height
14.4" (36.5 cm)
Thickness (Without Stand)
2.2" (5.6 cm)
2.9" (7.4 cm)
Weight (Without Stand)
9.0 lbs (4.1 kg)
12.3 lbs (5.6 kg)
Borders Size (Bezels)
0.4" (1.0 cm)
0.4" (1.0 cm)
Controls
Controls Picture
In The Box
In The Box Picture
Power Supply
External Brick
Internal
Back
Back Picture
Wall Mount
VESA 100x100
VESA 100x100
Borders
Borders Picture
Borders
0.4" (1.0 cm)
0.4" (1.0 cm)
Thickness
Thickness Picture
Thickness (with stand)
6.5" (16.5 cm)
8.1" (20.6 cm)
Thickness (without stand)
2.2" (5.6 cm)
2.9" (7.4 cm)
Picture Quality
Contrast
5.5
8.1
Checkerboard Picture
Native Contrast
735 : 1
3,372 : 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
7.8
7.9
Real Scene
315 cd/m²
340 cd/m²
Peak 2% Window
346 cd/m²
346 cd/m²
Peak 10% Window
346 cd/m²
346 cd/m²
Peak 25% Window
346 cd/m²
346 cd/m²
Peak 50% Window
347 cd/m²
345 cd/m²
Peak 100% Window
347 cd/m²
345 cd/m²
Sustained 2% Window
346 cd/m²
346 cd/m²
Sustained 10% Window
346 cd/m²
346 cd/m²
Sustained 25% Window
346 cd/m²
345 cd/m²
Sustained 50% Window
346 cd/m²
345 cd/m²
Sustained 100% Window
347 cd/m²
344 cd/m²
Automatic Brightness Limiting (ABL)
0.000
0.000
Minimum Brightness
50 cd/m²
HDR Brightness
6.6
0.0
EOTF
VESA DisplayHDR Certification
No Certification
Real Scene
363 cd/m²
N/A
Peak 2% Window
394 cd/m²
N/A
Peak 10% Window
395 cd/m²
N/A
Peak 25% Window
396 cd/m²
N/A
Peak 50% Window
396 cd/m²
N/A
Peak 100% Window
396 cd/m²
N/A
Sustained 2% Window
376 cd/m²
N/A
Sustained 10% Window
379 cd/m²
N/A
Sustained 25% Window
371 cd/m²
N/A
Sustained 50% Window
380 cd/m²
N/A
Sustained 100% Window
395 cd/m²
N/A
Automatic Brightness Limiting (ABL)
0.010
N/A
Gray Uniformity
7.8
8.6
50% Uniformity Picture
50% Std. Dev.
3.120%
2.201%
50% DSE
0.156%
0.112%
5% Uniformity Picture
5% Std. Dev.
1.177%
5% DSE
0.076%
Black Uniformity
4.8
1.7
Native Black Uniformity Picture
Native Std. Dev.
2.831%
4.887%
Black Uniformity Picture With Local Dimming
Std. Dev. w/ L.D.
N/A
N/A
Color Accuracy (Pre-Calibration)
7.3
7.3
Pre Calibration Picture
Pre Gamma Curve Picture
Pre Color Picture
Picture Mode
sRGB
User
sRGB Gamut Area xy
100.4%
White Balance dE (Avg.)
6.96
3.42
Color Temperature (Avg.)
7,860 K
7,086 K
Gamma (Avg.)
2.13
2.16
Color dE (Avg.)
4.15
3.02
Contrast Setting
N/A
50
RGB Settings
Default
N/A
Gamma Setting
Default
No Gamma Setting
Brightness Setting
40
80
Measured Brightness
182 cd/m²
307 cd/m²
Brightness Locked
No
Color Accuracy (Post-Calibration)
9.5
9.3
Post Calibration Picture
Post Gamma Curve Picture
Post Color Picture
Picture Mode
Gamer 1
User
sRGB Gamut Area xy
102.7%
White Balance dE (Avg.)
0.66
1.19
Color Temperature (Avg.)
6,473 K
6,587 K
Gamma (Avg.)
2.18
2.20
Color dE (Avg.)
0.56
0.85
Contrast Setting
68
51
RGB Settings
49-46-40
100-100-90
Gamma Setting
Mode 2
No Gamma Setting
Brightness Setting
18
14
Measured Brightness
102 cd/m²
102 cd/m²
ICC Profile
SDR Color Gamut
9.5
8.9
sRGB Color Gamut Picture
sRGB Coverage xy
99.6%
96.1%
sRGB Picture Mode
Gamer 1
User
Adobe RGB Color Gamut Picture
Adobe RGB Coverage xy
88.2%
81.4%
Adobe RGB Picture Mode
Gamer 1
User
HDR Color Gamut
8.8
0.0
Wide Color Gamut
Yes
N/A
DCI-P3 Color Gamut Picture
DCI-P3 Coverage xy
95.2%
DCI-P3 Picture Mode
Standard
No HDR
Rec. 2020 Color Gamut Picture
Rec. 2020 Coverage xy
70.5%
N/A
Rec. 2020 Picture Mode
Standard
No HDR
DCI P3 xy
N/A
HDR Color Volume
7.1
0.0
DCI-P3 Color Volume ITP Picture
1,000 cd/m² DCI-P3 Coverage ICtCp
57.7%
N/A
DCI-P3 Picture Mode
Standard
No HDR
Rec. 2020 Color Volume ITP Picture
10,000 cd/m² Rec. 2020 Coverage ICtCp
27.6%
N/A
Rec. 2020 Picture Mode
Standard
No HDR
Viewing Angle
8.4
5.7
Viewing Angle Video
Chroma Graph
Color Washout From Left
45°
36°
Color Washout From Right
45°
34°
Hue Graph
Color Shift From Left
51°
47°
Color Shift From Right
51°
42°
Lightness Graph
Brightness Loss From Left
48°
36°
Brightness Loss From Right
50°
34°
Black Level Raise From Left
70°
13°
Black Level Raise From Right
70°
12°
Gamma Shift From Left
58°
15°
Gamma Shift From Right
55°
14°
Text Clarity
7.0
7.0
ClearType On
ClearType Off
Pixel Type
IPS
VA
Pixels
Subpixel Layout
RGB
RGB
Direct Reflections
6.4
Ring Light Picture
Direct Reflections Graph
Peak Direct Reflection Intensity
32.4%
Screen Finish
Matte
Matte
Ambient Black Level Raise
8.7
Black Level Raise Picture
Ambient Black Level Raise Graph
Black Luminance @ 0 lx
0.30 cd/m²
Black Luminance @ 1000 lx
0.58 cd/m²
Total Reflected Light
5.8
Bright Room Off Picture
Total Reflection Ring Light Picture
Total Reflected Light Intensity
34,862% ⋅ pixel
Diffraction Artifacts
No
Gradient
9.7
7.9
Gradient Picture
Color Depth
10 Bit
8 Bit
Vertical Viewing Angle
5.1
Vertical Viewing Angle Video
Vertical Chroma Graph
Color Washout From Below
33°
Color Washout From Above
29°
Vertical Hue Graph
Color Shift From Below
30°
Color Shift From Above
33°
Vertical Lightness Graph
Brightness Loss From Below
31°
Brightness Loss From Above
31°
Black Level Raise From Below
8°
Black Level Raise From Above
9°
Gamma Shift From Below
12°
Gamma Shift From Above
11°
SDR Color Volume
9.5
sRGB Color Volume ITP Picture
sRGB In ICtCp
99.7%
Adobe RGB Color Volume ITP Picture
Adobe RGB In ICtCp
89.7%
sRGB Picture Mode
User
Adobe RGB Picture Mode
User
Image Retention
10
Image Retention Picture
IR After 0 Min Recovery
0.00%
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%
Color Bleed
10
Color Bleed Horizontal
Pixel Row Error
0.001%
Color Bleed Vertical
Pixel Column Error
0.001%
Reflections
8.0
Average Room
Average Room Off Picture
Bright Room Off Picture
Screen Finish
Matte
Matte
Total Reflections
5.2%
Indirect Reflections
2.4%
Calculated Direct Reflections
1.8%
Motion
Refresh Rate
7.4
Native Refresh Rate
144 Hz
144 Hz
Max Refresh Rate
144 Hz
144 Hz
Max Refresh Rate Over DP
144 Hz
Max Refresh Rate Over HDMI
144 Hz
Max Refresh Rate Over DP @ 10-bit
144 Hz
Max Refresh Rate Over HDMI @ 10-Bit
75 Hz
DSC Toggle
No
DSC Off Max Refresh Rate Over DP
N/A
DSC Off Max Refresh Rate Over HDMI
N/A
Variable Refresh Rate (VRR)
Variable Refresh Rate
Yes
FreeSync
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
Native
144 Hz
144 Hz
Max Refresh Rate
144 Hz
144 Hz
Variable Refresh Rate
Yes
VRR Motion Performance
7.5
Pursuit Photo VRR
OD Mode CAD Comparison
Recommended VRR OD Setting
Fast
Variable Overdrive Advertised
No
Avg. CAD
189
Best CAD
182
Worst CAD
205
Refresh Rate Compliance
7.3
Fast GTG Sequence
VRR Compliance
Compliance @ Max Hz
53%
Compliance @ 120 FPS
58%
Compliance @ 60 FPS
76%
CAD @ Max Refresh Rate
7.4
Pursuit Photo At Max Refresh
CAD Heatmap At Max Refresh
OD Transition Max Refresh Rate
OD fast
0 to 31
Recommended Overdrive Setting
Fast
Avg. CAD
182
Best 10% CAD
104
Worst 10% CAD
300
Response Time @ Max Refresh Rate
First Response Time
7.1 ms
4.6 ms
Total Response Time
7.1 ms
12.1 ms
Recommended Overdrive Setting
Fast
Normal
RGB Overshoot
0 RGB
1.1%
Worst 10% RGB Overshoot
1 RGB
1.6%
Worst 10% First Response Time
13.0 ms
6.0 ms
Worst 10% Total Response Time
13.0 ms
13.1 ms
Heatmap First Response
Heatmap Total Response
Heatmap RGB Overshoot
Motion Blur Picture
Response Time Table
CAD @ 120Hz
7.4
Pursuit Photo 120Hz
CAD Heatmap 120Hz
OD Transition 120Hz
OD fast
0 to 31
Recommended Overdrive Setting
Fast
Avg. CAD
183
Best 10% CAD
103
Worst 10% CAD
301
Response Time @ 120Hz
Worst 10% First Response Time
13.0 ms
RGB Overshoot
1 RGB
Total Response Time
7.4 ms
First Response Time
6.8 ms
Recommended Overdrive Setting
Fast
Worst 10% Total Response Time
13.1 ms
Worst 10% RGB Overshoot
8 RGB
120Hz First Response Heatmap
120Hz Total Response Heatmap
120Hz Heatmap RGB Overshoot
CAD @ 60Hz
7.1
Pursuit Photo 60Hz
CAD Heatmap 60Hz
OD Transition 60Hz
OD fast
0 to 31
Recommended Overdrive Setting
Fast
Avg. CAD
208
Best 10% CAD
115
Worst 10% CAD
331
Response Time @ 60Hz
Recommended Overdrive Setting
Fast
Normal
First Response Time
6.5 ms
4.5 ms
Total Response Time
13.7 ms
18.3 ms
RGB Overshoot
5 RGB
7.3%
Worst 10% Total Response Time
21.8 ms
20.8 ms
Worst 10% First Response Time
10.8 ms
4.4 ms
Worst 10% RGB Overshoot
16 RGB
18.4%
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)
No BFI
Yes
Maximum Frequency
N/A
144 Hz
Minimum Frequency
N/A
85 Hz
Longest Pulse Width Brightness
N/A
Shortest Pulse Width Brightness
N/A
Pulse Width Control
No BFI
Pulse Phase Control
No BFI
Pulse Amplitude Control
No BFI
VRR At The Same Time
No BFI
VRR Flicker
8.5
VRR Flicker Video
VRR Flicker Graph
Dark Gray Flicker
0.9 RGB
Middle Gray Flicker
1.7 RGB
Light Gray Flicker
1.5 RGB
Image Flicker
10
10
Backlight Picture
Flicker-Free
Yes
Yes
PWM Dimming Frequency
0 Hz
0 Hz
Response Time @ 60Hz
7.5
Motion Blur Picture
Response Time Table
Best Overdrive Setting
Fast
Normal
Rise / Fall Time
6.5 ms
4.5 ms
Total Response Time
13.7 ms
18.3 ms
Overshoot Error
5 RGB
7.3%
Dark Rise / Fall Time
10.8 ms
4.4 ms
Dark Total Response Time
21.8 ms
20.8 ms
Dark Overshoot Error
16 RGB
18.4%
Inputs
Input Lag
8.7
9.4
Native Resolution @ Max Hz
4.3 ms
4.7 ms
Native Resolution @ 120Hz
5.1 ms
Native Resolution @ 60Hz
14.0 ms
9.2 ms
Variable Refresh Rate
5.5 ms
Variable Refresh Rate @ 60Hz
9.6 ms
10 Bit HDR
N/A
Backlight Strobing (BFI)
N/A
5.5 ms
Resolution
7.5
8.3
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
Screen Diagonal
27.0"
Screen Area
310 in²
PS5 Compatibility
4.9
PS5 Compatibility Photo
PS5 Compatibility Table
4k @ 120Hz
No
4k @ 60Hz
Yes
1440p @ 120Hz
Yes
1440p @ 60Hz
Yes
1080p @ 120Hz
Yes
1080p @ 60Hz
Yes
Xbox Series X|S Compatibility
6.6
XSX Compatibility Photo
XSX Compatibility Table
4k @ 120Hz
No
4k @ 60Hz
Yes
1440p @ 120Hz
Yes
1440p @ 60Hz
Yes
1080p @ 120Hz
Yes
1080p @ 60Hz
Yes
Inputs
Inputs 1
Inputs 2
Inputs
Inputs 1
Inputs 2
DisplayPort
1 (DP 1.4)
1 (DP 1.4)
DisplayPort Transmission Bandwidth
No DisplayPort 2.1
Mini DisplayPort
No
No
HDMI
2 (HDMI 2.0)
2 (HDMI 2.0)
HDMI 2.1 Bandwidth
No HDMI 2.1
Daisy Chaining
No
3.5mm Audio Out
Yes
1
Ethernet
No
HDR10
Yes
No
Dolby Vision
No
DVI
No
VGA
No
DisplayPort Out
No
USB
2
2 (USB 2.0)
USB C
0
No
Microphone In 3.5mm
No
Digital Optical Audio Out
No
Analog Audio Out RCA
No
Power Supply
External Brick
Internal
USB
USB-A Ports
2
2 (USB 2.0)
USB-A Rated Speed
5Gbps (USB 3.2 Gen 1)
USB-B Upstream Port
Yes
USB-C Ports
0
No
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
Fixed (On/Off)
Multiple Input Display
No
PIP + PBP
KVM Switch
No
Smart OS
No
HDR10
Yes
No
On-Screen Display (OSD)
OSD Picture
Controls
Controls Picture
In The Box
In The Box Picture
Check Price
27"
27GL850-B
SEE PRICE
Amazon.com
27"
Optix MAG271CQR
SEE PRICE
Amazon.com
27"
27GL83A-B
SEE PRICE
Amazon.com
27"
Optix MAG271CQR
SEE PRICE
BestBuy.com
27"
Optix MAG271CQR
SEE PRICE
Walmart.com
27"
Optix MAG271CQR
SEARCH
B&H
LG 27GL850-B/27GL83A-B
MSI Optix MAG271CQR
Comments
LG 27GL850-B/27GL83A-B vs MSI Optix MAG271CQR: Main Discussion
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