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- Table of Contents
- Top
- Main Differences
- Design
- Picture Quality
- Motion
- Inputs
- Features
- Comments
LG 27GL850-B/27GL83A-B vs Dell S2721DGF
Side-by-Side Comparison
Products
LG 27GL850-B/27GL83A-B
Dell S2721DGF
Tested using Methodology v2.0
Updated Aug 12, 2024 03:32 PM
SEE PRICE
BestBuy.comTested using Methodology v1.2
Updated May 09, 2024 07:49 PM
SEE PRICE
Amazon.com
Max Refresh Rate144 Hz
Size27"
Pixel TypeIPS
Native Resolution2560 x 1440
Variable Refresh RateYes
HDR10Yes
Max Refresh Rate165 Hz
Size27"
Pixel TypeIPS
Native Resolution2560 x 1440
Variable Refresh RateYes
HDR10Yes
Variants
- 27GL850-B (27")
- 27GL83A-B (27")
- S2721DGF (27")
Our Verdict
LG 27GL850-B/27GL83A-B
Dell S2721DGF
The Dell S2721DGF is a bit better overall than the LG 27GL850-B/27GL83A-B. The Dell has much better ergonomics, better build quality, and better reflection handling. On the other hand, the LG is more accurate out of the box, and for the two units we tested, the LG has better black uniformity, but this varies between units.
Notice: Two or more of the products selected have been tested with different test methodologies, so some of the results below aren't directly comparable. Learn how our test benches and scoring system work, and read more about the latest changes to our monitors test methodology.
Main Differences for
Threshold
Full Comparison
Design
Style
Design Picture
Curved
No
No
Curve Radius
Not Curved
Not Curved
Accelerated Longevity Test
Uniformity Pictures
Longevity Graph
Build Quality
7.0
8.0
Build Quality Picture
Ergonomics
7.4
9.2
Ergonomics Picture
Back Picture
Height Adjustment
4.1" (10.5 cm)
5.1" (13.0 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
Yes, Both Ways
Swivel Range
No swivel
-45° to 45°
Wall Mount
VESA 100x100
VESA 100x100
Stand
Stand Picture
Thickness Picture
Base Width
18.9" (48.0 cm)
10.9" (27.6 cm)
Base Depth
9.4" (23.9 cm)
7.9" (20.0 cm)
Thickness (With Display)
6.5" (16.5 cm)
6.3" (16.0 cm)
Weight (With Display)
13.2 lbs (6.0 kg)
14.6 lbs (6.6 kg)
Display
Display Picture
Size
27"
27"
Housing Width
24.2" (61.4 cm)
24.1" (61.2 cm)
Housing Height
14.4" (36.5 cm)
14.2" (36.1 cm)
Thickness (Without Stand)
2.2" (5.6 cm)
2.6" (6.5 cm)
Weight (Without Stand)
9.0 lbs (4.1 kg)
9.9 lbs (4.5 kg)
Borders Size (Bezels)
0.4" (1.0 cm)
0.3" (0.7 cm)
Controls
Controls Picture
In The Box
In The Box Picture
Power Supply
External Brick
Internal
Picture Quality
Contrast
5.5
5.8
Checkerboard Picture
Native Contrast
735 : 1
882 : 1
Contrast With Local Dimming
N/A
971 : 1
Local Dimming
0.0
1.0
Local Dimming Video
Local Dimming
No
Yes
Backlight
Edge
Edge
SDR Brightness
7.8
8.0
Real Scene
315 cd/m²
341 cd/m²
Peak 2% Window
346 cd/m²
364 cd/m²
Peak 10% Window
346 cd/m²
367 cd/m²
Peak 25% Window
346 cd/m²
368 cd/m²
Peak 50% Window
347 cd/m²
368 cd/m²
Peak 100% Window
347 cd/m²
368 cd/m²
Sustained 2% Window
346 cd/m²
364 cd/m²
Sustained 10% Window
346 cd/m²
367 cd/m²
Sustained 25% Window
346 cd/m²
368 cd/m²
Sustained 50% Window
346 cd/m²
368 cd/m²
Sustained 100% Window
347 cd/m²
368 cd/m²
Automatic Brightness Limiting (ABL)
0.000
0.001
Minimum Brightness
50 cd/m²
35 cd/m²
HDR Brightness
6.6
6.6
EOTF
VESA DisplayHDR Certification
No Certification
DisplayHDR 400 - 1.0/1.1
Real Scene
363 cd/m²
328 cd/m²
Peak 2% Window
394 cd/m²
481 cd/m²
Peak 10% Window
395 cd/m²
485 cd/m²
Peak 25% Window
396 cd/m²
486 cd/m²
Peak 50% Window
396 cd/m²
487 cd/m²
Peak 100% Window
396 cd/m²
487 cd/m²
Sustained 2% Window
376 cd/m²
480 cd/m²
Sustained 10% Window
379 cd/m²
484 cd/m²
Sustained 25% Window
371 cd/m²
484 cd/m²
Sustained 50% Window
380 cd/m²
486 cd/m²
Sustained 100% Window
395 cd/m²
486 cd/m²
Automatic Brightness Limiting (ABL)
0.010
0.003
Horizontal Viewing Angle
8.4
8.5
Horizontal Viewing Angle Video
Horizontal Chroma Graph
Color Washout From Left
45°
46°
Color Washout From Right
45°
47°
Horizontal Hue Graph
Color Shift From Left
51°
52°
Color Shift From Right
51°
55°
Horizontal Lightness Graph
Brightness Loss From Left
48°
48°
Brightness Loss From Right
50°
49°
Black Level Raise From Left
70°
70°
Black Level Raise From Right
70°
70°
Gamma Shift From Left
58°
60°
Gamma Shift From Right
55°
61°
Vertical Viewing Angle
6.8
6.2
Vertical Viewing Angle Video
Vertical Chroma Graph
Color Washout From Below
32°
32°
Color Washout From Above
33°
33°
Vertical Hue Graph
Color Shift From Below
33°
31°
Color Shift From Above
39°
34°
Vertical Lightness Graph
Brightness Loss From Below
37°
36°
Brightness Loss From Above
39°
37°
Black Level Raise From Below
70°
32°
Black Level Raise From Above
41°
22°
Gamma Shift From Below
31°
30°
Gamma Shift From Above
31°
30°
Gray Uniformity
7.8
8.0
50% Uniformity Picture
50% Std. Dev.
3.120%
3.975%
50% DSE
0.156%
0.132%
Black Uniformity
4.8
3.9
Native Black Uniformity Picture
Native Std. Dev.
2.831%
2.946%
Black Uniformity Picture With Local Dimming
Std. Dev. w/ L.D.
N/A
7.261%
Color Accuracy (Pre-Calibration)
7.3
5.9
Pre Calibration Picture
Pre Gamma Curve Picture
Pre Color Picture
Picture Mode
sRGB
Standard
sRGB Gamut Area xy
100.4%
137.7%
White Balance dE (Avg.)
6.96
3.43
Color Temperature (Avg.)
7,860 K
6,929 K
Gamma (Avg.)
2.13
2.13
Color dE (Avg.)
4.15
3.55
Contrast Setting
N/A
75
RGB Settings
Default
Default
Gamma Setting
Default
No Gamma Setting
Brightness Setting
40
75
Measured Brightness
182 cd/m²
223 cd/m²
Brightness Locked
No
No
Color Accuracy (Post-Calibration)
9.5
9.8
Post Calibration Picture
Post Gamma Curve Picture
Post Color Picture
Picture Mode
Gamer 1
Custom Color
sRGB Gamut Area xy
102.7%
100.7%
White Balance dE (Avg.)
0.66
0.54
Color Temperature (Avg.)
6,473 K
6,504 K
Gamma (Avg.)
2.18
2.17
Color dE (Avg.)
0.56
0.34
Contrast Setting
68
73
RGB Settings
49-46-40
100-96-97
Gamma Setting
Mode 2
No Gamma Setting
Brightness Setting
18
30
Measured Brightness
102 cd/m²
99 cd/m²
SDR Color Gamut
9.5
9.4
sRGB Color Gamut Picture
sRGB Coverage xy
99.6%
99.6%
sRGB Picture Mode
Gamer 1
Custom Color
Adobe RGB Color Gamut Picture
Adobe RGB Coverage xy
88.2%
84.5%
Adobe RGB Picture Mode
Gamer 1
Custom Color
HDR Color Gamut
8.8
9.1
Wide Color Gamut
Yes
Yes
DCI-P3 Color Gamut Picture
DCI-P3 Coverage xy
95.2%
97.2%
DCI-P3 Picture Mode
Standard
Desktop
Rec. 2020 Color Gamut Picture
Rec. 2020 Coverage xy
70.5%
72.8%
Rec. 2020 Picture Mode
Standard
Desktop
HDR Color Volume
7.1
8.8
DCI-P3 Color Volume ITP Picture
1,000 cd/m² DCI-P3 Coverage ICtCp
57.7%
89.8%
DCI-P3 Picture Mode
Standard
Desktop
Rec. 2020 Color Volume ITP Picture
10,000 cd/m² Rec. 2020 Coverage ICtCp
27.6%
71.0%
Rec. 2020 Picture Mode
Standard
Desktop
Text Clarity
7.0
7.5
ClearType On
ClearType Off
Pixel Type
IPS
IPS
Pixels
Subpixel Layout
RGB
RGB
Reflections
7.7
8.1
Average Room
Average Room Off Picture
Bright Room Off Picture
Screen Finish
Matte
Matte
Total Reflections
4.8%
4.4%
Indirect Reflections
2.7%
3.0%
Calculated Direct Reflections
2.1%
1.5%
Gradient
9.7
9.7
Gradient Picture
Color Depth
10 Bit
10 Bit
SDR Color Volume
9.6
sRGB Color Volume ITP Picture
sRGB In ICtCp
97.5%
sRGB Picture Mode
Custom Color
Adobe RGB Color Volume ITP Picture
Adobe RGB In ICtCp
89.5%
Adobe RGB Picture Mode
Custom Color
Motion
Refresh Rate
7.4
8.5
Native Refresh Rate
144 Hz
165 Hz
Max Refresh Rate
144 Hz
165 Hz
Max Refresh Rate Over DP
144 Hz
165 Hz
Max Refresh Rate Over HDMI
144 Hz
144 Hz
Max Refresh Rate Over DP @ 10-bit
144 Hz
165 Hz
Max Refresh Rate Over HDMI @ 10-Bit
75 Hz
60 Hz
Variable Refresh Rate (VRR)
Variable Refresh Rate
Yes
Yes
FreeSync
Yes
Yes
G-SYNC
Compatible (NVIDIA Certified)
Compatible (NVIDIA Certified)
VRR Maximum
144 Hz
165 Hz
VRR Minimum
< 20 Hz
< 20 Hz
VRR Supported Connectors
DisplayPort, HDMI
DisplayPort, HDMI
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%
Response Time @ 60Hz
8.0
Motion Blur Picture
Response Time Table
Recommended Overdrive Setting
Fast
Fast
Rise / Fall Time
6.5 ms
4.8 ms
Total Response Time
13.7 ms
11.6 ms
Overshoot Error
5 RGB
1.0%
Worst 3 Rise / Fall Time
10.8 ms
6.5 ms
Worst 3 Total Response Time
21.8 ms
20.2 ms
Worst 3 Overshoot Error
16 RGB
5.3%
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
3.5 ms
Total Response Time
7.1 ms
6.3 ms
Recommended Overdrive Setting
Fast
Extreme
Motion Blur Picture
RGB Overshoot
0 RGB
1.9%
Worst 10% RGB Overshoot
1 RGB
14.7%
Worst 10% First Response Time
13.0 ms
4.2 ms
Worst 10% Total Response Time
13.0 ms
10.6 ms
Heatmap First Response
Heatmap Total Response
Heatmap RGB Overshoot
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
5.4 ms
RGB Overshoot
1 RGB
0.6%
Total Response Time
7.4 ms
7.4 ms
First Response Time
6.8 ms
4.2 ms
Recommended Overdrive Setting
Fast
Super Fast
Worst 10% Total Response Time
13.1 ms
10.8 ms
Worst 10% RGB Overshoot
8 RGB
4.8%
120Hz First Response Heatmap
120Hz Total Response Heatmap
120Hz Heatmap RGB Overshoot
Motion Blur Picture
Response Time Table
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
Fast
First Response Time
6.5 ms
4.8 ms
Total Response Time
13.7 ms
11.6 ms
RGB Overshoot
5 RGB
1.0%
Worst 10% Total Response Time
21.8 ms
20.2 ms
Worst 10% First Response Time
10.8 ms
6.5 ms
Worst 10% RGB Overshoot
16 RGB
5.3%
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
No BFI
Maximum Frequency
N/A
N/A
Minimum Frequency
N/A
N/A
Longest Pulse Width Brightness
N/A
N/A
Shortest Pulse Width Brightness
N/A
N/A
Pulse Width Control
No BFI
No BFI
Pulse Phase Control
No BFI
No BFI
Pulse Amplitude Control
No BFI
No BFI
VRR At The Same Time
No BFI
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
>1000 Hz
Inputs
Input Lag
8.7
9.0
Native Resolution @ Max Hz
4.3 ms
3.7 ms
Native Resolution @ 120Hz
5.1 ms
4.8 ms
Native Resolution @ 60Hz
14.0 ms
11.1 ms
Backlight Strobing (BFI)
N/A
N/A
Resolution
7.5
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"
Screen Area
310 in²
PS5 Compatibility
3.9
5.0
PS5 Compatibility Photo
PS5 Compatibility Table
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
VRR
No
Xbox Series X|S Compatibility
6.6
5.8
XSX Compatibility Photo
XSX Compatibility Table
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
No
VRR
Yes
Inputs Photos
Inputs 1
Inputs 2
Video And Audio Ports
DisplayPort
1 (DP 1.4)
1 (DP 1.4)
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
2
HDR10
Yes
Yes
3.5mm Audio In
No
No
3.5mm Microphone In
No
No
USB
USB-A Ports
2
4
USB-A Rated Speed
5Gbps (USB 3.2 Gen 1)
5Gbps (USB 3.2 Gen 1)
USB-B Upstream Port
Yes
Yes
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
No
No
RGB Illumination
No
Fixed (On/Off)
Multiple Input Display
No
No
KVM Switch
No
No
On-Screen Display (OSD)
OSD Picture
LG 27GL850-B/27GL83A-B
Dell S2721DGF
Comments
LG 27GL850-B/27GL83A-B vs Dell S2721DGF: Main Discussion
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