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Comparison between Apple Thunderbolt Display vs Dell U2520D

General Info
Model Number Apple Thunderbolt Display Dell U2520D
Price
Type Monitor Monitor
Year 2011 2020
Brand Apple Dell
Model Series UltraSharp
Model Number Thunderbolt Display U2520D
Alias UltraSharp U2520D
Display
Screen Size Class 27" (inches) 25" (inches)
Diagonal Size 27 in
68.6 cm
685.8 mm
2.25 ft
24.98 in
63.4 cm
634.4 mm
2.08 ft
Screen Width 23.49 in
59.7 cm
596.736 mm
1.96 ft
21.77 in
55.3 cm
552.96 mm
1.81 ft
Screen Height 13.22 in
33.6 cm
335.664 mm
1.1 ft
12.25 in
31.1 cm
311.04 mm
1.02 ft
Display Manufacturer LG Display
Display Type H-IPS IPS
Display Bit Depth 8 bits 8 bits
Frame Rate Control No No
Max Number of Colors 16777216 16777216
Bits 24 24
Screen Aspect Ratio 16:9 16:9
Screen Resolution 2560 x 1440 2560 x 1440
Screen Pixel Pitch 0.233 mm 0.216 mm
Screen Pixel Density 109 ppi 117 ppi
Screen-to-Body Ratio 91.23 %
Backlight Source W-LED W-LED
DCI P3 95%
sRGB 99 %
Adobe RGB 1998 75 %
Screen Brightness 375 cd/m² 350 cd/m²
Static Screen Contrast 1000 : 1 1000 : 1
Dynamic Screen Contrast 2000000 : 1
Screen Horizontal Viewing Angle 178 ° 178 °
Screen Vertical Viewing Angle 178 ° 178 °
Display Minimum Response Time 6.5 ms 5 ms
Display Average Response Time 8 ms 8 ms
Display Maximum Response Time 12 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
49.9 mm
0.16 ft
Case Weight 4.2 kg
9 lbs
Case Width with Stand 25.59 in
65 cm
650 mm
2.13 ft
22.35 in
56.8 cm
567.7 mm
1.86 ft
Case Height with Stand 19.33 in
49.1 cm
491 mm
1.61 ft
15.07 in
38.3 cm
382.9 mm
1.26 ft
Case Depth with Stand 8.15 in
20.7 cm
207 mm
0.68 ft
7.28 in
18.5 cm
185 mm
0.61 ft
Case Weight with Stand 10.8 kg
24 lbs
6.4 kg
14 lbs
Case Color Silver Black
Hardware
Built-in Camera Yes No
Network LAN
Connectivity 1 x Thunderbolt
3 x USB 2.0 (downstream)
1 x Ethernet RJ45
1 x USB 3.0 (Type-C; 90W; DisplayPort)
1 x USB 3.0 (Type-C; Gen 1; downstream; 15W)
1 x DisplayPort 1.4 (in)
1 x 3.5 mm Audio Out
1 x DisplayPort 1.4 (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
Features
Cool Features Flicker-free technology
Low Blue Light
Extra Features Security lock slot
Anti-theft stand lock slot
Ergonomics
Case Width 22.35 in
56.8 cm
567.7 mm
1.86 ft
Case Height 13.07 in
33.2 cm
332.1 mm
1.09 ft
Vesa Mount Support No Yes
VESA Interface Standard Size 75 x 75 100 x 100
Removable VESA Stand Yes Yes
Height Adjustment No Yes
Height Adjustment Range 130 mm
13 cm
5.1181 in
0.4265 ft
Landscape or Portrait Pivot Support No Yes
Left Pivot 90 °
Right Pivot 90 °
Left or Right Swivel Support No Yes
Left Swivel 45 °
Right Swivel 45 °
Forward and Backward Tilt Support Yes Yes
Forward Tilt 5 ° 5 °
Backward Tilt 25 ° 21 °
Frequency and Interpolation
Vertical Digital Frequency 60 Hz 60 Hz
Screen Interpolation Measurement Unit NULL
Accessories
Extras DisplayPort cable
USB Type-C to Type-C cable
USB Type-C to Type-A cable
Certificates and Standards
Licenses BFR-free
CEL
ENERGY STAR 6.0
EPEAT
Mercury-free
NFPA 99
PVC-free
RoHS Compliant
TCO Certified Displays
Usage and Storage Requirements
Safe Operating Temperature Level 10 °C - 35 °C
50 °F - 95 °F
0 °C - 40 °C
32 °F - 104 °F
Safe Operating Humidity Level 20 % - 80 % 10 % - 80 %
Internal Storage Temperature -20 °C - 47 °C
-4 °F - 116.6 °F
-20 °C - 60 °C
-4 °F - 140 °F
Internal Storage Humidity 5 % - 90 %
Max Operating Altitude 3048 5000
Max Storage Altitude 12192
Apple Thunderbolt Display Dell U2520D