Comparison between:
- 37.5" LG 38UC99
- 34.14" Dell U3421WE
- 37.52" Dell U3821DW

Brand, series, model

Information about the brand, series, model and model aliases.

LG 38UC99Dell U3421WEDell U3821DW
Series-UltraSharpUltraSharp
LG 38UC99Dell U3421WEDell U3821DW
Model alias38UC99-W
38CB99
38CB99-W
UltraSharp U3421WE-
Model year201620202021

Display

Information about the main characteristics of the display - panel, backlight, resolution, refresh rate, etc.

Size class37.5 in34.14 in37.52 in
Diagonal952.5 mm
95.25 cm
37.5 in
3.125 ft
867.2 mm
86.72 cm
34.1417 in
2.8451 ft
952.9 mm
95.29 cm
37.5157 in
3.1263 ft
Width882.816 mm
88.2816 cm
34.7565 in
2.8964 ft
799.8 mm
79.98 cm
31.4882 in
2.624 ft
890 mm
89 cm
35.0394 in
2.9199 ft
Height367.84 mm
36.784 cm
14.4819 in
1.2068 ft
334.8 mm
33.48 cm
13.1811 in
1.0984 ft
387.8 mm
38.78 cm
15.2677 in
1.2723 ft
Radius of curvature2300 mm
230 cm
90.5512 in
7.5459 ft
1900 mm
190 cm
74.8031 in
6.2336 ft
2300 mm
230 cm
90.5512 in
7.5459 ft
Panel manufacturerLG DisplayLG Display-
Panel modelLM375QW1-SSA1--
Panel typeAH-IPSAH-IPSIPS
Panel bit depth10 bits (8 bits + FRC)10 bits10 bits
FRCYes--
Colors1073741824 colors
30 bits
1073741824 colors
30 bits
1073741824 colors
30 bits
Aspect ratio2.4:12.389:12.4:1
Resolution3840 x 1600 pixels3440 x 1440 pixels3840 x 1600 pixels
Pixel pitch0.23 mm
0.023 cm
0.0091 in
0.0008 ft
0.233 mm
0.0233 cm
0.0092 in
0.0008 ft
0.229 mm
0.0229 cm
0.009 in
0.0008 ft
Pixel density110 ppi
43 ppcm
109 ppi
43 ppcm
109 ppi
43 ppcm
Display area92.1 %-98.38 %
BacklightW-LEDW-LEDW-LED
sRGB99 %99 %100 %
Adobe RGB (1998)70 %--
NTSC (1953)72 %--
DCI P3-95 %95 %
Brightness300 cd/m²300 cd/m²300 cd/m²
Static contrast1000 : 11000 : 11000 : 1
Dynamic contrast5000000 : 1--
Horizontal viewing angle178 °178 °178 °
Vertical viewing angle178 °178 °178 °
Minimum response time5 ms
0.0050 s
5 ms
0.0050 s
5 ms
0.0050 s
Average response time10 ms
0.0100 s
8 ms
0.0080 s
8 ms
0.0080 s
Maximum response time15 ms
0.0150 s
--
Input lag25 ms
0.0250 s
--
CoatingAnti-glare/Matte (3H)Anti-glare/Matte (3H)Anti-glare/Matte (3H)

3D

3D displays use various technologies to achieve a 3D effect. Each of these technologies has its own advantages and drawbacks.

3DNoNoNo

Frequencies

Information about the horizontal and vertical refresh rates/frequencies.

Horizontal frequency (digital)30 kHz - 101 kHz-30 kHz - 100 kHz
Vertical frequency (digital)56 Hz - 75 Hz60 Hz56 Hz - 76 Hz

Power supply and consumption

Information about the power supply and consumption, energy efficiency class, etc.

110V100 V - 120 V100 V - 120 V100 V - 120 V
220V220 V - 240 V220 V - 240 V220 V - 240 V
Alternating current frequency50 Hz - 60 Hz50 Hz - 60 Hz50 Hz - 60 Hz
Electric current (A)-3 A3 A
Power consumption (off)0.3 W0.5 W0.3 W
Power consumption (sleep)1.2 W0.5 W0.3 W
Power consumption (eco)30 W--
Power consumption (average)49.6 W36 W36.5 W
Power consumption (maximum)57 W210 W230 W
Power consumption (annual)--105.47 kWh
Energy efficiency classB--

Dimensions, weight and color

Information about the dimensions and the weight of the specific model with and without stand as well as the colors, in which it is offered to the market.

Width897.2 mm
89.72 cm
35.3228 in
2.9436 ft
813.3 mm
81.33 cm
32.0197 in
2.6683 ft
894.3 mm
89.43 cm
35.2087 in
2.9341 ft
Height393 mm
39.3 cm
15.4724 in
1.2894 ft
-392.3 mm
39.23 cm
15.4449 in
1.2871 ft
Depth91.5 mm
9.15 cm
3.6024 in
0.3002 ft
-102.4 mm
10.24 cm
4.0315 in
0.336 ft
Weight7.7 kg
16.98 lbs
7.52 kg
16.58 lbs
8.8 kg
19.4 lbs
Width with stand897.2 mm
89.72 cm
35.3228 in
2.9436 ft
813.3 mm
81.33 cm
32.0197 in
2.6683 ft
894.3 mm
89.43 cm
35.2087 in
2.9341 ft
Height with stand466.2 mm
46.62 cm
18.3543 in
1.5295 ft
392.8 mm
39.28 cm
15.4646 in
1.2887 ft
443.8 mm
44.38 cm
17.4724 in
1.456 ft
Depth with stand230.4 mm
23.04 cm
9.0709 in
0.7559 ft
237.4 mm
23.74 cm
9.3465 in
0.7789 ft
251.2 mm
25.12 cm
9.8898 in
0.8241 ft
Weight with stand9.3 kg
20.5 lbs
11.87 kg
26.17 lbs
13.6 kg
29.98 lbs
Box weight-16.62 kg
36.64 lbs
19.9 kg
43.87 lbs
Stand width--385 mm
38.5 cm
15.1575 in
1.2631 ft
Stand height--318.3 mm
31.83 cm
12.5315 in
1.0443 ft
Stand depth--251.2 mm
25.12 cm
9.8898 in
0.8241 ft
ColorsWhitePlatinum SilverBlack

Ergonomics

Information about the ergonomic functions - height adjustment, swivel angles, tilt angles, etc.

VESA mountYesYesYes
VESA interface100 x 100 mm100 x 100 mm100 x 100 mm
Removable standYesYesYes
Height adjustmentYesYesYes
Height adjustment range110 mm
11 cm
4.3307 in
0.3609 ft
150 mm
15 cm
5.9055 in
0.4921 ft
120 mm
12 cm
4.7244 in
0.3937 ft
Landscape/portrait pivotNoNoNo
Left/right swivelNoYesYes
Left swivel-30 °30 °
Right swivel-30 °30 °
Forward/backward tiltYesYesYes
Forward tilt5 °5 °5 °
Backward tilt20 °21 °21 °

Audio

Information about the audio system - number and power of the built-in speakers, supported audio technologies.

Speakers2 x 10 W2 x 5 W2 x 9 W
Maxx Audio--

Camera

Many contemporary desktop monitors and smart TV sets have built-in cameras.

CameraNoNoNo

Connectivity

Available connectivity ports, slots and interfaces.

Connectivity1 x USB (Type-C)
2 x USB 3.0 (downstream)
1 x USB 3.0 (upstream)
2 x HDMI 2.0
1 x DisplayPort 1.2
1 x 3.5 mm Audio Out
1 x USB 3.1 (Type-C; upstream; 90W; DP Alt Mode)
1 x USB 3.1 (Type-C; downstream; 15W)
4 x USB 3.2 (Type-A; Gen 1; downstream; 5 Gbps)
1 x USB 3.2 (Type-B; Gen 1; upstream)
1 x Ethernet RJ45
2 x HDMI 2.0
1 x DisplayPort 1.4
1 x 3.5 mm Audio Out
1 x USB 3.2 (Type-B; Gen 1; upstream)
1 x USB 3.2 (Type-C; downstream)
1 x USB 3.2 (Type-C; upstream; 90W; DP Alt Mode)
4 x USB 3.2 (Type-A; Gen 1; downstream)
1 x Ethernet RJ45
2 x HDMI 2.0
1 x DisplayPort 1.4
1 x 3.5 mm Audio Out (line-out for speakers)
High-bandwidth Digital Content Protection (HDCP)High-bandwidth Digital Content Protection (HDCP)High-bandwidth Digital Content Protection (HDCP)

Features

Some additional functional features of the model.

Features6-Axis Control
AMD FreeSync technology
Black Stabilizer
Flicker-free technology
DDC/CI
Dynamic Action Sync
Picture-by-Picture
Picture-in-Picture
Quick Charge
Screen Split
ComfortView
Flicker-free technology
KVM Switch
Low Blue Light
Picture-by-Picture
Picture-in-Picture
Flicker-free technology
KVM Switch
Low Blue Light
Picture-by-Picture
Picture-in-Picture

Certificates, standards and licenses

Licenses from regulatory agencies, standards, certificates.

Certificates, standards and licensesBSMI
CCC
CE
cTick
ENERGY STAR 6.0
FCC Class B
UL/cUL
Energy Star
EPEAT Gold
RoHS
TCO Certified Displays
TUV Rheinland Flicker Free Certified
TUV Rheinland Low Blue Light Certified
ENERGY STAR 8.0
EPEAT Gold
RoHS
TAA Availability
TCO Certified Displays

Operating and storage conditions

There are certain requirements for the environmental conditions, in which the display should be used and stored in order to function properly.

Operating temperature0 °C - 40 °C
32 °F - 104 °F
0 °C - 40 °C
32 °F - 104 °F
0 °C - 40 °C
32 °F - 104 °F
Operating humidity10 % - 80 %10 % - 80 %10 % - 80 %
Operating altitude-5000 m
16404.2 ft
5000 m
16404.2 ft
Storage temperature-20 °C - 60 °C
-4 °F - 140 °F
-20 °C - 60 °C
-4 °F - 140 °F
-20 °C - 60 °C
-4 °F - 140 °F
Storage humidity5 % - 85 %5 % - 90 %5 % - 90 %
Storage altitude-12192 m
40000 ft
12192 m
40000 ft

Accessories

Often the packaging of desktop monitors and smart TV sets includes accessories for them.

AccessoriesDisplayPort cable
Factory calibration report
HDMI cable
USB Type-C cable
USB 3.0 cable
DisplayPort cable
HDMI cable
USB Type-A to Type-B cable
USB Type-C to Type-C cable
DisplayPort cable
HDMI cable
USB Type-C cable
USB Type-B 3.2 Gen 1 cable

Additional features

Information about other features.

Additional featuresAnti-theft stand lock slotSecurity lock slotSecurity lock slot
 LG 38UC99Dell U3421WEDell U3821DW