Comparison between Acer CM3271K vs HP U28 4K HDR

General Info
Model Number	Acer CM3271K	HP U28 4K HDR

Price	Check on Amazon	Check on Amazon
Type	Monitor	Monitor
Year	2020	2020
Brand	Acer	HP
Model Series	ConceptD CM3
Model Number	CM3271K	U28 4K HDR
Alias	СМ3271Κ bmiiрruzх	1Z978AA
Display
Screen Size Class	27" (inches)	28" (inches)
Diagonal Size	27 in 68.6 cm 685.8 mm 2.25 ft	27.9 in 70.9 cm 708.538 mm 2.32 ft
Screen Width	24.04 in 61.1 cm 610.536 mm 2 ft	24.45 in 62.1 cm 620.928 mm 2.04 ft
Screen Height	13.77 in 35 cm 349.864 mm 1.15 ft	13.44 in 34.1 cm 341.28 mm 1.12 ft
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	16:9	16:9
Screen Resolution	3840 x 2160	3840 x 2160
Screen Pixel Pitch	0.159 mm	0.116 mm
Screen Pixel Density	160 ppi	157 ppi
Screen-to-Body Ratio		89.61 %
Backlight Source	W-LED	W-LED
DCI P3		93%
sRGB		100 %
Adobe RGB 1998	99 %
Screen Brightness	350 cd/m²	400 cd/m²
Max Screen Brightness	400 cd/m²
Static Screen Contrast	1000 : 1	1000 : 1
Dynamic Screen Contrast	100000000 : 1
Screen Horizontal Viewing Angle	178 °	178 °
Screen Vertical Viewing Angle	178 °	178 °
Display Minimum Response Time	4 ms	4 ms
Display Coating	Anti-glare/Matte	Anti-glare/Matte (3H)
HDR	DisplayHDR 400	HDR
3D	No	No
Size, weight, color
Case Depth		1.71 in 4.3 cm 43.4 mm 0.14 ft
Case Width with Stand	29.7 in 75.4 cm 754.283 mm 2.47 ft	25.08 in 63.7 cm 637.1 mm 2.09 ft
Case Height with Stand	26.35 in 66.9 cm 669.311 mm 2.2 ft	20.92 in 53.1 cm 531.4 mm 1.74 ft
Case Depth with Stand	14.03 in 35.6 cm 356.38 mm 1.17 ft	7.48 in 19 cm 189.9 mm 0.62 ft
Case Weight with Stand	8.452 kg 19 lbs	6.35 kg 14 lbs
Case Color	Black	Black
Hardware
Internal Storage		8
Built-in Camera	No	No
Connectivity	1 x DisplayPort 1.2 (a) 1 x 3.5 mm Audio Out 1 x USB 3.1 (Type-C; Gen 2; upstream; 15W; DP Alt Mode) 2 x HDMI 2.0	1 x HDMI 2.0 1 x DisplayPort 1.2 1 x 3.5 mm Audio Out 1 x USB (Type-C; upstream; 65W; DP Alt Mode) 3 x USB 3.2 (Type-A; Gen 1; downstream)
Audio
Audio Speakers	2 x 4W	2 x 3W
Features
Cool Features	Fliсkеr-frее tесhnоlоgy Light sеnsоr Раntоnе Vаlidаtеd Lоw Вluе Light Аdарtivе Соntrаst Маnаgеmеnt (АСМ) АМD FrееSynс Рrеmium	Flicker-free technology Low Blue Light
Extra Features	Anti-theft stand lock slot - Kensington	Security lock slot
Ergonomics
Case Width	29.35 in 74.5 cm 745.4 mm 2.45 ft	25.08 in 63.7 cm 637.1 mm 2.09 ft
Case Height		14.61 in 37.1 cm 371.2 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	180 mm 18 cm 7.0866 in 0.5906 ft
Landscape or Portrait Pivot Support		Yes
Left Pivot		90 °
Right Pivot		90 °
Left or Right Swivel Support	Yes	Yes
Left Swivel	180 °
Right Swivel	180 °
Forward and Backward Tilt Support	Yes	Yes
Forward Tilt	5 °	5 °
Backward Tilt	35 °	23 °
Frequency and Interpolation
Vertical Digital Frequency	60 Hz	23 Hz - 75 Hz
Horizontal Digital Frequency		30 kHz - 140 kHz
Screen Interpolation Measurement Unit	NULL	NULL
Accessories
Extras	HDMI Cable USB 3.0 cable USB Type-C cable Shielding Hood	DisplayPort cable HDMI cable USB Type-C cable
Certificates and Standards
Licenses	CE TÜV GS ISO9241-307 class II MPRII	Australian-New Zealand MEPS BSMI CB CCC CE CECP CEL EAC ENERGY STAR FCC ISO 9241-307 KC/KCC NOM PSB SEPA TCO Certified TUV-S UL/CSA VCCI Vietnam MEPS WEEE ISC WW application ICE
Usage and Storage Requirements
Safe Operating Temperature Level		5 °C - 35 °C 41 °F - 95 °F
Safe Operating Humidity Level		20 % - 80 %

Acer CM3271K

HP U28 4K HDR