Comparison between:
- 27" Dell S2721DGF
- 27" Acer CM3271K
- 27" Dell U2720Q
- 27" AOC LV273HUPR

Brand, series, model

Information about the brand, series, model and model aliases.

Dell S2721DGFAcer CM3271KDell U2720QAOC LV273HUPR
Series-ConceptD CM3UltraSharp-
Dell S2721DGFAcer CM3271KDell U2720QAOC LV273HUPR
Model alias-CM3271K bmiipruzxUltraSharp U2720Q
U2720QM
-

Display

Information about the main characteristics of the display - panel, backlight, resolution, refresh rate, etc.

Size class27 in27 in27 in27 in
Diagonal684.7 mm
68.47 cm
26.9567 in
2.2464 ft
685.8 mm
68.58 cm
27 in
2.25 ft
684.7 mm
68.47 cm
26.9567 in
2.2464 ft
684.7 mm
68.47 cm
26.9567 in
2.2464 ft
Width596.736 mm
59.6736 cm
23.4935 in
1.9578 ft
596.736 mm
59.6736 cm
23.4935 in
1.9578 ft
596.736 mm
59.6736 cm
23.4935 in
1.9578 ft
596.74 mm
59.674 cm
23.4937 in
1.9578 ft
Height335.664 mm
33.5664 cm
13.2151 in
1.1013 ft
335.664 mm
33.5664 cm
13.2151 in
1.1013 ft
335.664 mm
33.5664 cm
13.2151 in
1.1013 ft
335.66 mm
33.566 cm
13.215 in
1.1012 ft
Panel manufacturer---LG Display
Panel typeIPSIPSIPSAH-IPS
Panel bit depth10 bits (8 bits + FRC)10 bits10 bits (8 bits + FRC)10 bits
FRCYes-Yes-
Colors1073741824 colors
30 bits
1073741824 colors
30 bits
1073741824 colors
30 bits
1073741824 colors
30 bits
Aspect ratio1.778:1
16:9
1.778:1
16:9
1.778:1
16:9
1.778:1
16:9
Resolution2560 x 1440 pixels
Quad HD (QHD) / 1440p
3840 x 2160 pixels
Ultra HD (UHD) / 4K / 2160p
3840 x 2160 pixels
Ultra HD (UHD) / 4K / 2160p
3840 x 2160 pixels
Ultra HD (UHD) / 4K / 2160p
Pixel pitch0.233 mm
0.0233 cm
0.0092 in
0.0008 ft
0.155 mm
0.0155 cm
0.0061 in
0.0005 ft
0.155 mm
0.0155 cm
0.0061 in
0.0005 ft
0.155 mm
0.0155 cm
0.0061 in
0.0005 ft
Pixel density109 ppi
42 ppcm
163 ppi
64 ppcm
163 ppi
64 ppcm
163 ppi
64 ppcm
Display area90.07 %-92.04 %89 %
BacklightW-LEDW-LEDW-LEDW-LED
sRGB--99 %99 %
Adobe RGB (1998)85 %99 %89 %-
DCI P398 %-95 %-
Brightness360 cd/m²350 cd/m²350 cd/m²400 cd/m²
Peak brightness480 cd/m²400 cd/m²450 cd/m²-
Static contrast1000 : 11000 : 11300 : 11300 : 1
Dynamic contrast-100000000 : 1-50000000 : 1
HDRDisplayHDR 400DisplayHDR 400DisplayHDR 400DisplayHDR 400
HLG (Hybrid Log Gamma)
Horizontal viewing angle178 °178 °178 °178 °
Vertical viewing angle178 °178 °178 °178 °
Minimum response time1 ms
0.0010 s
4 ms
0.0040 s
5 ms
0.0050 s
4 ms
0.0040 s
Average response time4 ms
0.0040 s
-8 ms
0.0080 s
-
Maximum response time6 ms
0.0060 s
---
Input lag3.7 ms
0.0037 s
-9 ms
0.0090 s
-
CoatingAnti-glare/Matte (3H)Anti-glare/MatteAnti-glare/Matte (3H)Anti-glare/Matte
-Response time - 1 ms (VRB - Virtual Response Boost)--

3D

3D displays use various technologies to achieve a 3D effect. Each of these technologies has its own advantages and drawbacks.

3DNoNoNoNo

Frequencies

Information about the horizontal and vertical refresh rates/frequencies.

Horizontal frequency (digital)--30 kHz - 140 kHz30 kHz - 140 kHz
Vertical frequency (digital)30 Hz - 165 Hz60 Hz24 Hz - 75 Hz23 Hz - 75 Hz
DisplayPort - 2560 x 1440 @ 165 Hz
HDMI - 2560 x 1440 @ 144 Hz
---

Power supply and consumption

Information about the power supply and consumption, energy efficiency class, etc.

110V100 V - 120 V100 V - 120 V100 V - 120 V100 V - 120 V
220V220 V - 240 V220 V - 240 V220 V - 240 V220 V - 240 V
Alternating current frequency50 Hz - 60 Hz50 Hz - 60 Hz50 Hz - 60 Hz50 Hz - 60 Hz
Electric current (A)1.6 A-2.5 A1.5 A
Power consumption (off)-0.3 W0.3 W-
Power consumption (sleep)0.3 W0.45 W0.3 W0.5 W
Power consumption (average)32 W-33 W37 W
Power consumption (maximum)90 W-200 W-

Dimensions, weight and color

Information about the dimensions and the weight of the specific model with and without stand as well as the colors, in which it is offered to the market.

Width611.6 mm
61.16 cm
24.0787 in
2.0066 ft
711.2 mm
71.12 cm
28 in
2.3333 ft
611.3 mm
61.13 cm
24.0669 in
2.0056 ft
614.9 mm
61.49 cm
24.2087 in
2.0174 ft
Height363.6 mm
36.36 cm
14.315 in
1.1929 ft
-356 mm
35.6 cm
14.0157 in
1.168 ft
366 mm
36.6 cm
14.4094 in
1.2008 ft
Depth67.8 mm
6.78 cm
2.6693 in
0.2224 ft
-49.7 mm
4.97 cm
1.9567 in
0.1631 ft
50.5 mm
5.05 cm
1.9882 in
0.1657 ft
Weight4.5 kg
9.92 lbs
-4.4 kg
9.7 lbs
4.4 kg
9.7 lbs
Width with stand611.6 mm
61.16 cm
24.0787 in
2.0066 ft
711.2 mm
71.12 cm
28 in
2.3333 ft
611.3 mm
61.13 cm
24.0669 in
2.0056 ft
614.9 mm
61.49 cm
24.2087 in
2.0174 ft
Height with stand393.9 mm
39.39 cm
15.5079 in
1.2923 ft
614.68 mm
61.468 cm
24.2 in
2.0167 ft
395.2 mm
39.52 cm
15.5591 in
1.2966 ft
401.2 mm
40.12 cm
15.7953 in
1.3163 ft
Depth with stand200.3 mm
20.03 cm
7.8858 in
0.6572 ft
342.9 mm
34.29 cm
13.5 in
1.125 ft
185 mm
18.5 cm
7.2835 in
0.607 ft
194.3 mm
19.43 cm
7.6496 in
0.6375 ft
Weight with stand-6.53 kg
14.4 lbs
6.6 kg
14.55 lbs
6.5 kg
14.33 lbs
ColorsBlackBlackBlackBlack

Ergonomics

Information about the ergonomic functions - height adjustment, swivel angles, tilt angles, etc.

VESA mountYesYesYesYes
VESA interface100 x 100 mm100 x 100 mm100 x 100 mm100 x 100 mm
Removable standYesYesYesYes
Height adjustmentYesYesYesYes
Height adjustment range130 mm
13 cm
5.1181 in
0.4265 ft
180 mm
18 cm
7.0866 in
0.5906 ft
130 mm
13 cm
5.1181 in
0.4265 ft
130 mm
13 cm
5.1181 in
0.4265 ft
Landscape/portrait pivotYes-YesYes
Left pivot90 °-90 °0 °
Right pivot90 °-90 °90 °
Left/right swivelYesYesYesYes
Left swivel45 °180 °45 °180 °
Right swivel45 °180 °45 °180 °
Forward/backward tiltYesYesYesYes
Forward tilt5 °5 °5 °5 °
Backward tilt21 °35 °21 °23 °

Audio

Information about the audio system - number and power of the built-in speakers, supported audio technologies.

Speakers-2 x 4 W--

Camera

Many contemporary desktop monitors and smart TV sets have built-in cameras.

CameraNoNoNoNo

Connectivity

Available connectivity ports, slots and interfaces.

Connectivity1 x USB 3.0 (Type-B; upstream)
4 x USB 3.0 (Type-A; downstream)
2 x HDMI 2.0
1 x DisplayPort 1.4
1 x 3.5 mm Audio In
1 x 3.5 mm Audio Out
2 x USB 3.0 (Type-A; downstream)
1 x USB 3.1 (Type-C; Gen 2; upstream; 15W; DP Alt Mode)
2 x HDMI 2.0
1 x DisplayPort 1.2 (a)
1 x 3.5 mm Audio Out
2 x USB 3.0 (Type-A; downstream)
1 x USB 3.0 (Type-A; downstream; BC 1.2 charging at 2A)
1 x USB 3.0 (Type-C; upstream; 90W; DP Alt Mode)
1 x USB 3.0 (Type-C; downstream; 15W)
1 x HDMI 2.0 (CEC)
1 x DisplayPort 1.4
1 x 3.5 mm Audio Out
1 x USB (upstream)
2 x USB 3.2 (Type-A; downstream)
1 x USB 3.2 (Type-C; 65W; DP)
2 x HDMI 2.0
1 x DisplayPort 1.4
High-bandwidth Digital Content Protection (HDCP)-High-bandwidth Digital Content Protection (HDCP) 2.2High-bandwidth Digital Content Protection (HDCP)

Features

Some additional functional features of the model.

FeaturesAMD FreeSync Premium Pro
Flicker-free technology
Low Blue Light
NVIDIA G-SYNC Compatible
RGB lights
Adaptive Contrast Management (ACM)
AMD FreeSync Premium
Flicker-free technology
Light sensor
Low Blue Light
Pantone Validated
Flicker-free technology
Low Blue Light
Clear Vision
Delta E < 2
Low Blue Light
KVM

Certificates, standards and licenses

Licenses from regulatory agencies, standards, certificates.

Certificates, standards and licensesENERGY STAR
EPEAT
TCO Certified
RoHS
CE
TÜV GS
ISO9241-307 class II
MPRII
BFR-free
CEL
ENERGY STAR 6.0
EPEAT
Mercury-free
NFPA 99
PVC-free
RoHS Compliant
TCO
CCC
CH RoHS
CEL
CECP
Win10
TUV
CE
FCC
cTUVus
ISO 9241-307
Bauart

Operating and storage conditions

There are certain requirements for the environmental conditions, in which the display should be used and stored in order to function properly.

Operating temperature0 °C - 40 °C
32 °F - 104 °F
-0 °C - 40 °C
32 °F - 104 °F
-
Operating humidity10 % - 80 %-10 % - 80 %-
Operating altitude5000 m
16404.2 ft
-5000 m
16404.2 ft
-
Storage temperature-20 °C - 60 °C
-4 °F - 140 °F
--20 °C - 60 °C
-4 °F - 140 °F
-
Storage humidity5 % - 90 %-5 % - 90 %-
Storage altitude12192 m
40000 ft
-12192 m
40000 ft
-

Accessories

Often the packaging of desktop monitors and smart TV sets includes accessories for them.

AccessoriesDisplayPort cable
HDMI cable
USB 3.0 cable
HDMI Cable
USB 3.0 cable
USB Type-C cable
Shielding Hood
DisplayPort cable (U2720Q)
HDMI cable (U2720QM)
USB Type-C to Type-C cable
USB Type-C to Type-A cable
-

Additional features

Information about other features.

Additional featuresSecurity lock slotAnti-theft stand lock slot - KensingtonSecurity lock slot-
 Dell S2721DGFAcer CM3271KDell U2720QAOC LV273HUPR