Comparison between Acer XB271HK vs Gigabyte M28U

General Info
Model Number	Acer XB271HK	Gigabyte M28U

Price	Check on Amazon	Check on Amazon
Type	Monitor	Monitor
Year	2015	2021
Brand	Acer	Gigabyte
Model Number	XB271HK	M28U
Alias	XB271HK bmiprz
Display
Screen Size Class	27" (inches)	29" (inches)
Diagonal Size	27 in 68.6 cm 685.8 mm 2.25 ft	28.63 in 72.7 cm 727.2 mm 2.39 ft
Screen Width	23.47 in 59.6 cm 596.16 mm 1.96 ft	24.88 in 63.2 cm 631.928 mm 2.07 ft
Screen Height	13.2 in 33.5 cm 335.34 mm 1.1 ft	14.16 in 36 cm 359.78 mm 1.18 ft
Display Manufacturer	AU Optronics
Display Type	AHVA IPS	IPS
Display Bit Depth	10 bits	8 bits
Frame Rate Control	No
Max Number of Colors	1073741824	16777216
Bits	30	24
Screen Aspect Ratio	16:9	16:9
Screen Resolution	3840 x 2160	3840 x 2160
Screen Pixel Pitch	0.155 mm	0.16 mm
Screen Pixel Density	163 ppi	154 ppi
Screen-to-Body Ratio	88.3 %	95.94 %
Backlight Source	W-LED	W-LED
DCI P3		94%
sRGB	100 %	120 %
NTSC 1953	72 %
Screen Brightness	300 cd/m²	300 cd/m²
Max Screen Brightness		400 cd/m²
Static Screen Contrast	1000 : 1	1000 : 1
Screen Horizontal Viewing Angle	178 °	178 °
Screen Vertical Viewing Angle	178 °	178 °
Screen Input Lag	4 ms
Display Minimum Response Time	4 ms	2 ms
Display Average Response Time	8 ms
Display Maximum Response Time	12 ms
Display Coating	Anti-glare/Matte (3H)	Anti-glare/Matte
HDR		DisplayHDR 400
3D	No	No
Size, weight, color
Case Depth	2.4 in 6.1 cm 61 mm 0.2 ft	2.48 in 6.3 cm 63.1 mm 0.21 ft
Case Weight	4.6 kg 10 lbs	5.18 kg 11 lbs
Case Width with Stand	24.2 in 61.5 cm 614.7 mm 2.02 ft	25.06 in 63.7 cm 636.5 mm 2.09 ft
Case Height with Stand	15.8 in 40.1 cm 401.3 mm 1.32 ft	14.96 in 38 cm 380 mm 1.25 ft
Case Depth with Stand	10.57 in 26.8 cm 268.4 mm 0.88 ft	7.62 in 19.4 cm 193.6 mm 0.64 ft
Case Weight with Stand	7 kg 15 lbs	6.93 kg 15 lbs
Case Color	Black	Black
Hardware
Built-in Camera	No	No
Connectivity	1 x HDMI 1.4 1 x DisplayPort 1.2 4 x USB 3.0 (downstream) 1 x USB 3.0 (upstream)	1 x USB 3.0 (Type-C; upstream) 2 x HDMI 2.1 1 x 3.5 mm Audio Out 1 x DisplayPort 1.3 (DSC) 3 x USB 3.0 (Type-A; downstream; BC 1.2 charging at 5V/1.5A) 1 x USB 3.0 (Type-B; upstream)
Audio
Audio Speakers	2 x 2W	2 x 3W
Features
Cool Features	Flicker-free technology Nvidia G-SYNC Technology	Flicker-free technology GameAssist (Aim Stabilizer / Crosshair / Alignment / Dashboard / Black Equalizer / Timer / Counter / Auto-Update) Low Blue Light Smart OD OSD Sidekick KVM Switch 6-axis color control AMD FreeSync Premium Pro
Extra Features		Anti-theft stand lock slot - Kensington
Ergonomics
Case Width	24.2 in 61.5 cm 614.7 mm 2.02 ft	25.06 in 63.7 cm 636.5 mm 2.09 ft
Case Height	14.5 in 36.8 cm 368.3 mm 1.21 ft	14.66 in 37.2 cm 372.3 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	130 mm 13 cm 5.1181 in 0.4265 ft
Landscape or Portrait Pivot Support	Yes	No
Left Pivot	90 °
Right Pivot	90 °
Left or Right Swivel Support	Yes	No
Left Swivel	30 °
Right Swivel	30 °
Forward and Backward Tilt Support	Yes	Yes
Forward Tilt	5 °	5 °
Backward Tilt	35 °	20 °
Frequency and Interpolation
Vertical Digital Frequency	60 Hz	48 Hz - 144 Hz
Screen Interpolation Measurement Unit		NULL
Accessories
Extras	DisplayPort cable HDMI cable USB 3.0 cable	DisplayPort cable HDMI cable USB cable
Certificates and Standards
Licenses	ENERGY STAR ErP TCO Certified Displays 6.0	Eyesafe certified TÜV Rheinland Flicker-free certified TÜV Rheinland Low Blue Light certified
Usage and Storage Requirements
Safe Operating Temperature Level		0 °C - 40 °C 32 °F - 104 °F

Acer XB271HK

Gigabyte M28U