Comparison between Acer XB281HK vs Dell U2720Q

General Info
Model Number	Acer XB281HK	Dell U2720Q

Price	Check on Amazon	Check on Amazon
Type	Monitor	Monitor
Year	2015	2020
Brand	Acer	Dell
Model Series		UltraSharp
Model Number	XB281HK	U2720Q
Alias	Predator XB281HKbmiprz	UltraSharp U2720Q
Display
Screen Size Class	28" (inches)	27" (inches)
Diagonal Size	28 in 71.1 cm 711.2 mm 2.33 ft	26.96 in 68.5 cm 684.7 mm 2.25 ft
Screen Width	24.45 in 62.1 cm 620.93 mm 2.04 ft	23.49 in 59.7 cm 596.736 mm 1.96 ft
Screen Height	13.44 in 34.1 cm 341.28 mm 1.12 ft	13.22 in 33.6 cm 335.664 mm 1.1 ft
Display Manufacturer	Innolux
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	0.155 mm
Screen Pixel Density	157 ppi	163 ppi
Screen-to-Body Ratio		92.04 %
Backlight Source	W-LED	W-LED
DCI P3		95%
sRGB		99 %
NTSC 1953	72 %
Screen Brightness	300 cd/m²	350 cd/m²
Static Screen Contrast	1000 : 1	1300 : 1
Dynamic Screen Contrast	100000000 : 1
Screen Horizontal Viewing Angle	170 °	178 °
Screen Vertical Viewing Angle	160 °	178 °
Display Minimum Response Time	1 ms	5 ms
Display Average Response Time		8 ms
Display Coating	Anti-glare/Matte (3H)	Anti-glare/Matte (3H)
HDR		DisplayHDR 400
3D	No	No
Size, weight, color
Case Depth		1.96 in 5 cm 49.7 mm 0.16 ft
Case Weight		4.4 kg 10 lbs
Case Width with Stand	25.94 in 65.9 cm 659 mm 2.16 ft	24.07 in 61.1 cm 611.3 mm 2.01 ft
Case Height with Stand	16.34 in 41.5 cm 415 mm 1.36 ft	15.56 in 39.5 cm 395.2 mm 1.3 ft
Case Depth with Stand	10.55 in 26.8 cm 268 mm 0.88 ft	7.28 in 18.5 cm 185 mm 0.61 ft
Case Weight with Stand	7.57 kg 17 lbs	6.6 kg 15 lbs
Case Color	Black	Black
Hardware
Built-in Camera	No	No
Connectivity	1 x HDMI 1.4 1 x DisplayPort 1.2 1 x 3.5 mm Audio Out 4 x USB 3.0 (downstream) 1 x USB 3.0 (upstream)	1 x USB 3.0 (Type-C; 90W; DisplayPort) 1 x USB 3.0 (Type-C; downstream; 15W) 1 x DisplayPort 1.4 1 x 3.5 mm Audio Out 1 x HDMI 2.0 (CEC) 1 x USB 3.0 (downstream; BC 1.2 charging at 2A) 2 x USB 3.0 (Type-A; downstream)
Audio
Audio Speakers	2 x 2W
Features
Cool Features	Flicker-free technology Nvidia G-SYNC Technology	Flicker-free technology Low Blue Light
Extra Features		Security lock slot
Ergonomics
Case Width		24.07 in 61.1 cm 611.3 mm 2.01 ft
Case Height		14.02 in 35.6 cm 356 mm 1.17 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	130 mm 13 cm 5.1181 in 0.4265 ft
Landscape or Portrait Pivot Support	Yes	Yes
Left Pivot	90 °	90 °
Right Pivot	90 °	90 °
Left or Right Swivel Support	Yes	Yes
Left Swivel	30 °	45 °
Right Swivel	30 °	45 °
Forward and Backward Tilt Support	Yes	Yes
Forward Tilt	5 °	5 °
Backward Tilt	35 °	21 °
Frequency and Interpolation
Vertical Digital Frequency	60 Hz	60 Hz
Screen Interpolation Measurement Unit		NULL
Accessories
Extras	DisplayPort cable HDMI cable USB 3.0 cable	DisplayPort cable USB Type-C to Type-C cable USB Type-C to Type-A cable
Certificates and Standards
Licenses	ENERGY STAR ErP TCO Certified Displays 6.0	BFR-free CEL ENERGY STAR 6.0 EPEAT Mercury-free NFPA 99 PVC-free RoHS Compliant TCO
Usage and Storage Requirements
Safe Operating Temperature Level		0 °C - 40 °C 32 °F - 104 °F
Safe Operating Humidity Level		10 % - 80 %
Internal Storage Temperature		-20 °C - 60 °C -4 °F - 140 °F
Internal Storage Humidity		5 % - 90 %
Max Operating Altitude		5000
Max Storage Altitude		12192

Acer XB281HK

Dell U2720Q