Dell 15R 3521 vs Lenovo X240 (20AM-A0JXIG)

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Summary

Processor Family

Intel Core i3
(3rd Gen)
Intel Core i5
(4th Gen)

Clock Speed

1.8 Ghz
1.6 Ghz

Capacity

4 GB RAM
4 GB RAM

RAM Features

DDR3
1600 Mhz
DDR3

Hard Disk

500 GB HDD
500 GB HDD

Hard Disk Features

SATA
5400 RPM
SATA
5400 RPM

Display Size

15.6 inches
(39.62 cm)
12.5 inches
(31.75 cm)

Display Features

HD LED Display
HD LED Backlit Anti-glare Display

OS

Windows 8
Windows 8

Type

(64-bit) OS
(64-bit) OS

User Ratings

N/A
2.7/5
(3 ratings)

General Information

Brand

Dell
Lenovo

Model

15R 3521
X240 (20AM-A0JXIG)

Thickness

31.3 Millimeter thickness
20.3 Millimeter thickness

Dimensions (WxDxH)

376 x 259 x 31.3  mm
305 x 208 x 20.3  mm

Weight

2.3 Kg weight
1.3 Kg weight (Light-weight)

Colors

Black
Black

Operating System

Windows 8
Windows 8 Professional

Operating System Type

64-bit
64-bit

Display Details

Display Size

15.6 Inches  (39.62 cm)
12.5 Inches  (31.75 cm)

Display Resolution

1366 x 768 Pixels
1366 x 768 Pixels

Pixel Density

100 ppi
125 ppi

Display Type

LED
LED

Display Features

HD LED Display
HD LED Backlit Anti-glare Display

Display Touchscreen

No
No

Performance

Processor

Intel Core i3-3217U

3rd Gen
Intel Core i5-4200U

4th Gen

Clock-speed

1.8 Ghz
1.6 Ghz

Chipset

Intel HM76 Express
N/A

Graphic Processor

AMD Radeon 7670M
Intel HD 4400

Graphics Memory

1 GB
N/A

Memory

Capacity

4 GB
4 GB

RAM type

DDR3
DDR3

RAM speed

1600 Mhz
N/A

Memory Slots

2 DIMM
2 DIMM

Expandable Memory

8 GB
8 GB

Memory Layout

1 x 4 Gigabyte
1 x 4 Gigabyte

Storage

HDD Capacity

500 GB
500 GB

HDD Speed(RPM)

5400 RPM
5400 RPM

HDD type

SATA
SATA

Battery

Battery Cell

4 Cell
3 Cell

Battery type

Li-Ion
N/A

Power Supply

65 W AC Adapter W
N/A

Battery Life

5 Hrs
6 Hrs

Networking

Wireless LAN

802.11 b/g/n
802.11 b/g/n

Wi-Fi Version

4
4

Bluetooth

Yes
Yes

Bluetooth Version

4.0
4.0

Ports

USB 3.0 slots

2
2

USB 2.0 slots

2
2

SD Card Reader

Yes
Yes

Ethernet Ports

1
1

Headphone Jack

Yes
Yes

Microphone Jack

Yes
Yes

VGA Port

N/A
Yes

Multimedia

Web-cam

Yes
Yes

Web-cam Resolution

1.0 MP
N/A

Secondary cam(Rear-facing)

No
No

Audio Solution

HD Audio Solution
HD Audio Solution

Speakers

Stereo Speakers
Stereo Speakers

Sound Technologies

Waves MaxxAudio4
N/A

In-built Microphone

Yes
Yes

Microphone Type

Digital Microphone
N/A

Peripherals

Optical Drive

DVD RW Drive with Dual Layer Support
N/A

Drive Type

DVD Writer
N/A

Pointing Device

Touchpad with Multi-touch Gesture Support
Touchpad with Multi-touch Gesture Support

Keyboard

Spill-resistant keyboard
ThinkPad Precision Keyboard

Backlit Keyboard

N/A
Yes

Fingerprint Scanner

No
No

Others

Warranty

1 Year
3 Years

Lockport

Yes
N/A

Sales Package

Laptop Battery AC Adapter User Guide
Laptop Battery AC Adapter User Guide