Comparison between Dell U2421E vs LG 27UL550

General Info
Model Number	Dell U2421E	LG 27UL550

Price	Check on Amazon	Check on Amazon
Type	Monitor	Monitor
Year	2020	2019
Brand	Dell	LG
Model Number	U2421E	27UL550
Alias		27UL550-W
Display
Screen Size Class	24" (inches)	27" (inches)
Diagonal Size	24.06 in 61.1 cm 611 mm 2 ft	26.96 in 68.5 cm 684.7 mm 2.25 ft
Screen Width	20.41 in 51.8 cm 518.4 mm 1.7 ft	23.49 in 59.7 cm 596.736 mm 1.96 ft
Screen Height	12.76 in 32.4 cm 324 mm 1.06 ft	13.22 in 33.6 cm 335.664 mm 1.1 ft
Display Type	IPS	IPS
Display Bit Depth	8 bits (6 bits + FRC)	10 bits (8 bits + FRC)
Frame Rate Control	Yes	Yes
Max Number of Colors	16777216	1073741824
Bits	24	30
Screen Aspect Ratio	16:10	16:9
Screen Resolution	1920 x 1200	3840 x 2160
Screen Pixel Pitch	0.275 mm	0.155 mm
Screen Pixel Density	94 ppi	163 ppi
Screen-to-Body Ratio	100.87 %	86.66 %
Backlight Source	W-LED	W-LED
sRGB	99 %	98 %
Screen Brightness	350 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	1.54 in 3.9 cm 39 mm 0.13 ft	1.81 in 4.6 cm 46 mm 0.15 ft
Case Weight	4 kg 9 lbs	4.4 kg 10 lbs
Case Width with Stand	20.9 in 53.1 cm 530.8 mm 1.74 ft	24.53 in 62.3 cm 623 mm 2.04 ft
Case Height with Stand	14.33 in 36.4 cm 364 mm 1.19 ft	18.19 in 46.2 cm 462 mm 1.52 ft
Case Depth with Stand	6.81 in 17.3 cm 173 mm 0.57 ft	9.06 in 23 cm 230 mm 0.75 ft
Case Weight with Stand	6.1 kg 13 lbs	6 kg 13 lbs
Case Color	Black	White, Gray
Hardware
Built-in Camera	No	No
Connectivity	1 x USB 3.2 (Type-C; Gen 1; upstream; 90W; DP Alt Mode) 1 x Ethernet RJ45 1 x DisplayPort 1.4 1 x 3.5 mm Audio Out 1 x DisplayPort 1.4 (Output MST) 1 x HDMI 1.4 4 x USB 3.2 (Type-A; Gen 1; downstream; 2x BC 1.2) 1 x USB 3.2 (Type-C; Gen 1; downstream; 15W)	1 x 3.5 mm Audio Out 2 x HDMI 2.0 1 x DisplayPort 1.4
Audio
Features
Cool Features	Easy Arrange Flicker-free technology Low Blue Light Infinity Edge design ComfortView Plus Dell Display Manager	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	20.9 in 53.1 cm 530.8 mm 1.74 ft	24.53 in 62.3 cm 623 mm 2.04 ft
Case Height	12.35 in 31.4 cm 313.7 mm 1.03 ft	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	150 mm 15 cm 5.9055 in 0.4921 ft	110 mm 11 cm 4.3307 in 0.3609 ft
Landscape or Portrait Pivot Support	Yes	Yes
Left Pivot	90 °	90 °
Right Pivot	90 °	90 °
Left or Right Swivel Support	Yes	No
Left Swivel	45 °
Right Swivel	45 °
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
Horizontal Digital Frequency	30 kHz - 83 kHz
Screen Interpolation Measurement Unit	NULL
Accessories
Extras	DisplayPort cable USB Type-C to Type-A cable USB Type-C to Type-C cable	DisplayPort cable HDMI cable
Certificates and Standards
Licenses	ENERGY STAR EPEAT Golf TCO Certified TUV Rheinland Low Blue Light Certified	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 U2421E

LG 27UL550