Comparison between:
- 27" Apple Thunderbolt Display
- 27" BenQ EW2740L
- 27" Lenovo Q27h-20

Brand, series, model

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

Apple Thunderbolt DisplayBenQ EW2740LLenovo Q27h-20
Apple Thunderbolt DisplayBenQ EW2740LLenovo Q27h-20
Model alias--66EDUAC1
Model year201120132022

Display

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

Size class27 in27 in27 in
Diagonal685.8 mm
68.58 cm
27 in
2.25 ft
685.8 mm
68.58 cm
27 in
2.25 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
597.6 mm
59.76 cm
23.5276 in
1.9606 ft
596.736 mm
59.6736 cm
23.4935 in
1.9578 ft
Height335.664 mm
33.5664 cm
13.2151 in
1.1013 ft
336.15 mm
33.615 cm
13.2343 in
1.1029 ft
335.664 mm
33.5664 cm
13.2151 in
1.1013 ft
Panel manufacturerLG DisplayAU Optronics-
Panel modelLM270WQ1-SLB3M270DAN02.0-
Panel typeH-IPSAMVAIPS
Panel bit depth8 bits8 bits10 bits (8 bits + FRC)
FRCNoNoYes
LUT--12 bits
Colors16777216 colors
24 bits
16777216 colors
24 bits
1073741824 colors
30 bits
Aspect ratio1.778:1
16:9
1.778:1
16:9
1.778:1
16:9
Resolution2560 x 1440 pixels
Quad HD (QHD) / 1440p
1920 x 1080 pixels
Full HD / 1080p
2560 x 1440 pixels
Quad HD (QHD) / 1440p
Pixel pitch0.233 mm
0.0233 cm
0.0092 in
0.0008 ft
0.311 mm
0.0311 cm
0.0123 in
0.001 ft
0.233 mm
0.0233 cm
0.0092 in
0.0008 ft
Pixel density109 ppi
42 ppcm
81 ppi
32 ppcm
109 ppi
42 ppcm
Display area-88.25 %92.4 %
BacklightW-LEDW-LEDW-LED
sRGB-100 %128 %
Adobe RGB (1998)75 %--
NTSC (1953)-72 %-
DCI P3--95 %
Brightness375 cd/m²300 cd/m²350 cd/m²
Static contrast1000 : 13000 : 11000 : 1
Dynamic contrast2000000 : 120000000 : 13000000 : 1
HDR--HDR10
Horizontal viewing angle178 °178 °178 °
Vertical viewing angle178 °178 °178 °
Minimum response time6.5 ms
0.0065 s
4 ms
0.0040 s
4 ms
0.0040 s
Average response time8 ms
0.0080 s
7 ms
0.0070 s
6 ms
0.0060 s
Maximum response time12 ms
0.0120 s
-14 ms
0.0140 s
Input lag-4 ms
0.0040 s
-
CoatingAnti-glare/Matte (3H)Anti-glare/Matte (3H)Anti-glare/Matte

3D

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

3DNoNoNo

Frequencies

Information about the horizontal and vertical refresh rates/frequencies.

Horizontal frequency (digital)-30 kHz - 83 kHz-
Vertical frequency (digital)60 Hz50 Hz - 76 Hz48 Hz - 70 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 V
220V220 V - 240 V220 V - 240 V220 V - 240 V
Alternating current frequency50 Hz - 60 Hz50 Hz - 60 Hz50 Hz - 60 Hz
Electric current (A)1.5 A--
Power consumption (off)0.5 W0.5 W0.3 W
Power consumption (sleep)2 W0.5 W0.5 W
Power consumption (eco)20 W23 W-
Power consumption (average)100 W52 W26 W
Power consumption (maximum)250 W-150 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.

Width-622.3 mm
62.23 cm
24.5 in
2.0417 ft
613.4 mm
61.34 cm
24.1496 in
2.0125 ft
Height-365.8 mm
36.58 cm
14.4016 in
1.2001 ft
353.4 mm
35.34 cm
13.9134 in
1.1594 ft
Depth-51.3 mm
5.13 cm
2.0197 in
0.1683 ft
41.8 mm
4.18 cm
1.6457 in
0.1371 ft
Weight-4.2 kg
9.26 lbs
4.4 kg
9.7 lbs
Width with stand650 mm
65 cm
25.5906 in
2.1325 ft
622.3 mm
62.23 cm
24.5 in
2.0417 ft
613.4 mm
61.34 cm
24.1496 in
2.0125 ft
Height with stand491 mm
49.1 cm
19.3307 in
1.6109 ft
449.6 mm
44.96 cm
17.7008 in
1.4751 ft
479.6 mm
47.96 cm
18.8819 in
1.5735 ft
Depth with stand207 mm
20.7 cm
8.1496 in
0.6791 ft
190.5 mm
19.05 cm
7.5 in
0.625 ft
186.9 mm
18.69 cm
7.3583 in
0.6132 ft
Weight with stand10.8 kg
23.81 lbs
-6.3 kg
13.89 lbs
Box width--715 mm
71.5 cm
28.1496 in
2.3458 ft
Box height--470 mm
47 cm
18.5039 in
1.542 ft
Box depth--142 mm
14.2 cm
5.5906 in
0.4659 ft
Box weight--9.3 kg
20.5 lbs
Stand depth--186.9 mm
18.69 cm
7.3583 in
0.6132 ft
ColorsSilverBlackCloud Gray

Ergonomics

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

VESA mountNoYesYes
VESA interface-100 x 100 mm100 x 100 mm
Removable standYesYesYes
Height adjustmentNoNoYes
Height adjustment range--80 mm
8 cm
3.1496 in
0.2625 ft
Landscape/portrait pivotNoNoNo
Left/right swivelNoNoNo
Forward/backward tiltYesYesYes
Forward tilt5 °5 °5 °
Backward tilt25 °20 °22 °

Audio

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

Speakers--2 x 3 W
49 W (Watt)
2.1 CH
Maxim MAX9736B High-Power Class D amplifier
-Smart Amp

Camera

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

CameraYesNoNo
Video resolution1280 x 720 pixels
0.92 MP
--
--Modular Camera Support - Lenovo LC 50

Network

Supported network technologies and standards for exchanging data with other devices.

NetworkLAN--

Connectivity

Available connectivity ports, slots and interfaces.

Connectivity3 x USB 2.0 (downstream)
1 x Ethernet RJ45
1 x Thunderbolt
1 x HDMI 1.4 (MHL)
1 x D-sub
1 x 3.5 mm Audio In
1 x 3.5 mm Audio Out
1 x USB 3.2 (Type-C; Gen 1; upstream; 90W; DP Alt Mode)
1 x USB 3.2 (Type-C; Gen 1; downstream; 15W)
3 x USB 3.2 (Type-A; Gen 1; downstream)
2 x HDMI 2.0
1 x DisplayPort 1.4
1 x 3.5 mm Audio Out
-High-bandwidth Digital Content Protection (HDCP)-

Features

Some additional functional features of the model.

Features-AMA (Advanced Motion Accelerator)
Flicker-free technology
Low Blue Light
Senseye 3
3-side NearEdgeless Design
AMD FreeSync technology
Flicker-free technology
Lenovo Artery
Natural Low Blue Light

Certificates, standards and licenses

Licenses from regulatory agencies, standards, certificates.

Certificates, standards and licenses-ENERGY STAR 6.0
TCO Certified Displays 6.0
WHQL (Windows 8; Windows 7)
CCC
China Energy Efficiency Standard Tier 2
Eyesafe Display Certification
RoHS (EU 2002/95/EC)
TÜV Rheinland Eye Comfort
TÜV Rheinland Low Blue Light (Hardware Solution)
Windows 7
Windows 10

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 temperature10 °C - 35 °C
50 °F - 95 °F
-0 °C - 40 °C
32 °F - 104 °F
Operating humidity20 % - 80 %-10 % - 80 %
Operating altitude3048 m
10000 ft
--
Storage temperature-20 °C - 47 °C
-4 °F - 116.6 °F
--20 °C - 60 °C
-4 °F - 140 °F
Storage humidity--5 % - 95 %

Accessories

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

Accessories-D-sub cable
HDMI cable
HDMI cable
USB Type-C cable

Additional features

Information about other features.

Additional features-Anti-theft stand lock slot - KensingtonAnti-theft stand lock slot - Kensington
 Apple Thunderbolt DisplayBenQ EW2740LLenovo Q27h-20