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Comparison between Dell U4021QW vs LG 27UL550

General Info
Name Dell U4021QW LG 27UL550
Image
Price
Type Monitor Monitor
Year 2021 2019
Brand Dell LG
Model Number U4021QW 27UL550
Alias 27UL550-W
Display
Screen Size Class 40" (inches) 27" (inches)
Diagonal Size 26.96 in
68.5 cm
684.7 mm
2.25 ft
Screen Width 37.27 in
94.7 cm
946.6 mm
3.11 ft
23.49 in
59.7 cm
596.736 mm
1.96 ft
Screen Height 13.22 in
33.6 cm
335.664 mm
1.1 ft
Display Curvature 2500
Display Type IPS IPS
Display Bit Depth 10 bits 10 bits (8 bits + FRC)
Frame Rate Control Yes
Max Number of Colors 1073741824 1073741824
Bits 30 30
Screen Aspect Ratio 21:9 16:9
Screen Resolution 5120 x 2160 3840 x 2160
Screen Pixel Pitch 0.155 mm
Screen Pixel Density 163 ppi
Screen-to-Body Ratio 86.66 %
Backlight Source W-LED W-LED
DCI P3 98%
sRGB 100 % 98 %
Screen Brightness 300 cd/m² 300 cd/m²
Static Screen Contrast 1000 : 1 1000 : 1
Screen Horizontal Viewing Angle 178 ° 178 °
Screen Vertical Viewing Angle 178 ° 178 °
Display Minimum Response Time 5 ms 5 ms
Display Average Response Time 8 ms
Display Coating Anti-glare/Matte (3H) Anti-glare/Matte (3H)
HDR HDR10
3D No No
Size, weight, color
Case Depth 1.81 in
4.6 cm
46 mm
0.15 ft
Case Weight 4.4 kg
10 lbs
Case Width with Stand 37.27 in
94.7 cm
946.6 mm
3.11 ft
24.53 in
62.3 cm
623 mm
2.04 ft
Case Height with Stand 18.02 in
45.8 cm
457.8 mm
1.5 ft
18.19 in
46.2 cm
462 mm
1.52 ft
Case Depth with Stand 9.76 in
24.8 cm
248 mm
0.81 ft
9.06 in
23 cm
230 mm
0.75 ft
Case Weight with Stand 9.5 kg
21 lbs
6 kg
13 lbs
Case Color Black White, Gray
Hardware
Built-in Camera No No
Connectivity 1 x USB 3.2 (Type-C; downstream; 15W)
1 x Ethernet RJ45 (Gigabit)
1 x DisplayPort 1.4
1 x 3.5 mm Audio Out (line-out for speakers)
1 x Thunderbolt 3.0 (Type-C; upstream; 90W; DP Alt Mode)
2 x HDMI 2.0
4 x USB 3.2 (Type-A; Gen 1; downstream)
1 x USB 3.2 (Type-B; Gen 1; upstream)
1 x 3.5 mm Audio Out
2 x HDMI 2.0
1 x DisplayPort 1.4
Audio
Audio Speakers 2 x 9W
Features
Cool Features KVM Switch
Low Blue Light
Picture-in-Picture
Picture-by-Picture
ComfortView Plus
Flicker-free technology
Black Stabilizer
Blue Light Filter
Dynamic Action Sync
HDCP (High-bandwidth Digital Content Protection) 2.2
Flicker-free technology
DDC/CI
6-Axis Control
Super Resolution+
AMD FreeSync technology
Extra Features Security lock slot Anti-theft stand lock slot - Kensington
Ergonomics
Case Width 24.53 in
62.3 cm
623 mm
2.04 ft
Case Height 14.61 in
37.1 cm
371 mm
1.22 ft
Vesa Mount Support Yes Yes
VESA Interface Standard Size 100 x 100 100 x 100
Removable VESA Stand Yes Yes
Height Adjustment Yes Yes
Height Adjustment Range 120 mm
12 cm
4.7244 in
0.3937 ft
110 mm
11 cm
4.3307 in
0.3609 ft
Landscape or Portrait Pivot Support No Yes
Left Pivot 90 °
Right Pivot 90 °
Left or Right Swivel Support Yes No
Left Swivel 30 °
Right Swivel 30 °
Forward and Backward Tilt Support Yes Yes
Forward Tilt 5 ° 5 °
Backward Tilt 21 ° 15 °
Frequency and Interpolation
Vertical Digital Frequency 60 Hz 40 Hz - 61 Hz
Screen Interpolation Measurement Unit NULL
Accessories
Extras DisplayPort cable
HDMI cable
Thunderbolt 4 (USB-C) Active Cable
USB Type-A to Type-B cable
DisplayPort cable
HDMI cable
Certificates and Standards
Licenses C-Tick
CCC
CECP
CEL
cUL
ENERGY STAR 7.0
Epeat Gold
ErP
FCC Class B
KC
RoHS Compliant
TÜV/GS
VCCI
Usage and Storage Requirements
Safe Operating Temperature Level 0 °C - 40 °C
32 °F - 104 °F
5 °C - 35 °C
41 °F - 95 °F
Safe Operating Humidity Level 10 % - 80 % 10 % - 85 %
Internal Storage Temperature -20 °C - 60 °C
-4 °F - 140 °F
Internal Storage Humidity 5 % - 90 %
Max Operating Altitude 5000
Max Storage Altitude 12192
Dell U4021QW LG 27UL550