Comparison between Acer CB281HK vs Lenovo L28u-30

General Info
Model Number	Acer CB281HK	Lenovo L28u-30

Price	Check on Amazon	Check on Amazon
Type	Monitor	Monitor
Year	2015	2020
Brand	Acer	Lenovo
Model Number	CB281HK	L28u-30
Alias	CB281HKymjdpprz	65FAGAC2
Display
Screen Size Class	28" (inches)	28" (inches)
Diagonal Size	28 in 71.1 cm 711.2 mm 2.33 ft	27 in 68.6 cm 685.8 mm 2.25 ft
Screen Width	24.45 in 62.1 cm 620.93 mm 2.04 ft	24.88 in 63.2 cm 631.928 mm 2.07 ft
Screen Height	13.44 in 34.1 cm 341.28 mm 1.12 ft	14.16 in 36 cm 359.78 mm 1.18 ft
Display Type	TN	IPS
Display Bit Depth	10 bits (8 bits + FRC)	10 bits (8 bits + FRC)
Frame Rate Control	Yes	Yes
Max Number of Colors	1073741824	1073741824
Bits	30	30
Screen Aspect Ratio	16:9	16:9
Screen Resolution	3840 x 2160	3840 x 2160
Screen Pixel Pitch	0.162 mm	0.161 mm
Screen Pixel Density	157 ppi	154 ppi
Screen-to-Body Ratio	84.24 %	95.52 %
Backlight Source	W-LED	W-LED
DCI P3		90%
sRGB	100 %	99 %
Screen Brightness	300 cd/m²	250 cd/m²
Max Screen Brightness		300 cd/m²
Static Screen Contrast	1000 : 1	1000 : 1
Dynamic Screen Contrast	100000000 : 1	3000000 : 1
Screen Horizontal Viewing Angle	170 °	178 °
Screen Vertical Viewing Angle	160 °	178 °
Display Minimum Response Time	1 ms	4 ms
Display Average Response Time		6 ms
Display Coating	Anti-glare/Matte (3H)	Anti-glare/Matte
3D	No	No
Size, weight, color
Case Depth	2.54 in 6.5 cm 64.5 mm 0.21 ft	1.94 in 4.9 cm 49.2 mm 0.16 ft
Case Weight		4.58 kg 10 lbs
Case Width with Stand	25.93 in 65.9 cm 658.7 mm 2.16 ft	25.08 in 63.7 cm 636.94 mm 2.09 ft
Case Height with Stand	15.81 in 40.2 cm 401.5 mm 1.32 ft	17.75 in 45.1 cm 450.82 mm 1.48 ft
Case Depth with Stand	9.31 in 23.7 cm 236.5 mm 0.78 ft	8.66 in 22 cm 219.98 mm 0.72 ft
Case Weight with Stand	8 kg 18 lbs	5.2 kg 11 lbs
Case Color	Black	Black
Hardware
Built-in Camera	No	No
Connectivity	1 x DVI-D Dual Link 1 x 3.5 mm Audio Out 1 x HDMI 2.0 (MHL) 1 x DisplayPort 1.2	1 x 3.5 mm Audio Out 1 x HDMI 2.0 1 x DisplayPort 1.2
Audio
Audio Speakers	2 x 2W
Features
Cool Features	Picture-By-Picture Picture-in-Picture Flicker-free technology HDCP (High-bandwidth Digital Content Protection)	Flicker-free technology Low Blue Light 3-side NearEdgeless design AMD FreeSync technology
Extra Features		Anti-theft stand lock slot - Kensington
Ergonomics
Case Width	25.93 in 65.9 cm 658.7 mm 2.16 ft	25.08 in 63.7 cm 636.94 mm 2.09 ft
Case Height	15.04 in 38.2 cm 381.9 mm 1.25 ft	14.71 in 37.4 cm 373.68 mm 1.23 ft
Vesa Mount Support	Yes	Yes
VESA Interface Standard Size	100 x 100	100 x 100
Removable VESA Stand	Yes	Yes
Height Adjustment	Yes	No
Height Adjustment Range	150 mm 15 cm 5.9055 in 0.4921 ft
Landscape or Portrait Pivot Support	Yes	No
Left Pivot	90 °
Right Pivot	90 °
Left or Right Swivel Support	Yes	No
Left Swivel	60 °
Right Swivel	60 °
Forward and Backward Tilt Support	Yes	Yes
Forward Tilt	5 °	5 °
Backward Tilt	35 °	22 °
Frequency and Interpolation
Vertical Digital Frequency	60 Hz
Screen Interpolation Measurement Unit		NULL
Accessories
Extras	DisplayPort cable DVI-D cable	HDMI cable
Certificates and Standards
Licenses	ENERGY STAR ErP TCO Certified Displays 6.0	CCC China Energy Efficiency Standard Tier 1 ENERGY STAR 8.0 EPEAT Gold Eyesafe Display Certification RoHS (EU 2002/95/EC) TÜV Rheinland Eye Comfort Windows Certification
Usage and Storage Requirements
Safe Operating Temperature Level		0 °C - 45 °C 32 °F - 113 °F
Safe Operating Humidity Level		10 % - 80 %
Internal Storage Temperature		-20 °C - 60 °C -4 °F - 140 °F
Internal Storage Humidity		5 % - 95 %
Max Operating Altitude		5000
Max Storage Altitude		12192

Acer CB281HK

Lenovo L28u-30