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Lenovo T420
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Lenovo T420 2 Core Intel Core I5-2xxx 2.4GHz 8GB 320GB HDD 14" Laptop

Digitaltrends.com Editor's Choice pcworld.com_techhive.com Business Ready Laptopmag.com Editor's Choice computershopper.com Editor's Choice PC Mag Editor's Choice
2 Intel Core I5-2xxx 2.4GHz 8GB Mar 2013
Processor Core Processor Family Processor Clock Speed Internal Memory Release Date
The ThinkPad T420 and T520 notebooks offer the best combination of thin and light mobility and top performance features a business class user would require. Top performing features include Second... More
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Unboxing the Lenovo ThinkPad T420
Lenovo Thinkpad T420 Review
Lenovo Thinkpad T420 HD Video-Preview
[HD] Lenovo Thinkpad T420 Review and Close Up!

11 Reasons For

Very Fast On-Board Graphics Adapter Base Frequency

With an on-board graphics adapter base frequency of 650 megahertz, the Lenovo T420 has a very fast on-board graphics adapter base frequency compared to most of the other comparable spec laptops that came out around the same time as the T420. Portable PCs of this spec and age have on-board graphics adapter base frequencies of between 200MHz and 650MHz, and the average on-board graphics adapter base frequency is 370MHz.

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64-Bit Processor Operating Mode

This portable PC supports a 64-bit processor operating mode, which is typical of many portable PCs of a similar age and spec to it.

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Quite Fast On-Board Graphics Adapter Dynamic Frequency

With an on-board graphics adapter dynamic frequency of 1,200 megahertz, the Lenovo T420 has a fairly fast on-board graphics adapter dynamic frequency compared to most of the other portable PCs that have been around for more than two years. The on-board graphics adapter dynamic frequencies of notebook PCs that have been on the market for around the same time as the T420 range from 660MHz to 1,300MHz.

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Lenovo Has Good Laptop Reviews

We calculated the average reviews for all Lenovo laptops and also specifically for Lenovo medium processor core notebook PCs and found that in both cases Lenovo had good reviews.

Quite Big Internal Memory

At 8 gigabytes, the Lenovo T420 has a fairly big internal memory compared to most of the other laptops of this age and type. The smallest internal memory of medium processor core notebook PCs that were released more than two years ago is 1GB and the biggest is 16GB.

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1,066MHz Processor Memory Clock Speed

The Lenovo T420 supports a 1,066MHz processor memory clock speed which is faster than the 133MHz processor memory clock speed supported by most comparable spec notebook PCs that are a similar age to it. In addition, this notebook PC supports 1 and 333MHz processor memory clock speeds. Across all similar spec laptops that have been available for more than two years the worst memory clock speeds supported by processor is 133MHz and the best is 1,600MHz.

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Quite Fast Hard Drive Speed

Across all the laptops that have been on the market for more than two years the hard drive speeds range from 4,200 RPM to 7,200 RPM, and the average hard drive speed is 5,900 RPM. The Lenovo T420 has one of the faster hard drive speeds (7,200 revolutions per minute) amongst medium processor core notebook PCs of this age.

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802.11n WiFi Standard

This laptop has an 802.11a|802.11g|802.11n WiFi standard, which is typical of many medium processor core notebook PCs that came out around the same time as it.

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64-Bit Operating System Architecture

This notebook PC has a 64-bit operating system architecture, which is typical of many medium processor core notebook PCs that are a comparable age to it.

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Two USB 2.0 Ports

The Lenovo T420 is a two USB 2.0 port notebook PC.

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2x SO-DIMM Memory Slot

This notebook PC has a 2x SO-DIMM memory slot, which is the most frequently found memory slot on medium processor core notebook PCs that are a similar age to it.

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11 Reasons Against

Quite Slow Maximum Processor Memory Bandwidth

The average maximum processor memory bandwidth of portable PCs of this spec and age is 25GB/s, and the maximum processor memory bandwidths range from 17GB/s to 32GB/s. The Lenovo T420 has one of the slower maximum processor memory bandwidths (only 21.3 gigabytes per second) amongst medium processor core notebook PCs of this age.

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Only Two Displays Supported by On-Board Grap

The Lenovo T420 is a laptop that uses two displays supported by on-board grap. Most of the other medium processor core notebook PCs that are a similar age to the T420 use two displays supported by on-board grap.

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Only One PCI Express Lane (max)

The Lenovo T420 is a one PCI Express lane (max) notebook PC.

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Does Not Have a Front Camera

The Lenovo T420 does not have a front camera. Most of the other portable PCs that have been around for a similar time to the T420 do have a front camera.

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Does Not Have a Full-Size Keyboard

The Lenovo T420 does not have a full-size keyboard, unlike most of the other comparable spec laptops that have been around for a similar time to the T420.

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Quite Small Total Storage Capacity

With a total storage capacity of only 320 gigabytes, the Lenovo T420 has one of the smaller total storage capacity amongst medium processor core notebook PCs of this age. The average total storage capacity of similar spec portable PCs that have been on the market for around the same time as the T420 is 520GB.

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Only HDD Storage Medium

This portable PC has an HDD storage medium, which is typical of many notebook PCs of a comparable spec and age to it. HDD is a traditional storage drive which stores the information on magnetic disks. HDD drives are slower than other forms of storage such as solid state drives (SSD) and flash drives.

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Quite Small Hard Drive Capacity

When compared to other medium processor core notebook PCs that came out around the same time as the T420 that we have checked, the Lenovo T420's hard drive capacity of only 320 gigabytes is one of the smallest. Across all the similar spec portable PCs that came out around the same time as the T420 the hard drive capacity range from 180GB to 1.5TB.

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Quite Slow Memory Clock Speed

The Lenovo T420 has one of the slowest memory clock speeds (only 1,333 megahertz) amongst medium processor core notebook PCs of this age. Similar spec laptops that have been available for a comparable time to the T420 have memory clock speeds of between 1,000MHz and 1,800MHz, and the average memory clock speed is 1,600MHz.

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Only 10 Mbit/s Ethernet LAN Data Rate

This laptop Ethernet LAN data rate, which is the most commonly found Ethernet LAN data rate on portable PCs that were launched more than two years ago.

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Does Not Have a Touch Sensitive Screen

Most laptops of a similar type and age to the T420 do not have a touch sensitive screen. The Lenovo T420 is no exception to this as it too does not have a touch sensitive screen.

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5 Other reasons to consider the Lenovo T420

Released Over Three Years Ago

It was over three years ago when Lenovo released the T420.

Average Processor Clock Speed

At 2.4 gigahertz, the Lenovo T420 has a relatively standard processor clock speed compared to most of the other medium processor core notebook PCs that have been on the market for more than two years.

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Intel Core I5-2xxx Processor Family

The Lenovo T420 has an Intel Core i5-2xxx processor family which is better than the Intel Core i5 processor family found on most notebook PCs of this age and type.

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Average Weight

At 2.2 kilograms, the Lenovo T420 has a relatively typical weight compared to most of the other medium processor core notebook PCs that were launched more than two years ago.

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Average Screen Size

With a screen size of 14 inches, the Lenovo T420 has a pretty average screen size compared to most of the other medium processor core notebook PCs that came out around the same time as the T420.

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Specification

Design
Form Factor
Device Type
Colour
Product Type
Intel Segment Tagging
Processor
Processor Core
Processor Family
Processor Clock Speed
Motherboard Chipset
Processor Socket
Processor Cache
Processor Cache
L3 Cache
System Bus Data Transfer Rate
Processor Thread
Maximum Turbo Frequency
Processor Model
Processor Memory Channel
Maximum Processor Memory Bandwidth
Processor Memory Clock Speed
Processor Memory Type
Maximum Internal Memory Supported by Processor
Processor Lithography
PCI Express Lane (max)
Processor Operating Mode
PCI Express Slot Version
Bus Type
Processor Codename
Processor Series
Thermal Design Power (TDP)
Stepping
PCI Express Configuration
CPU Multiplier (bus/core Ratio)
Tjunction
Processor Cache Type
Memory
Internal Memory
Memory
Maximum Internal Memory
Memory Slot
Memory Clock Speed
Internal Memory
Storage
Total Storage Capacity
Storage Medium
Memory Card
Hard Drive Speed
Hard Drive Capacity
Hard Drive Installed
Display
Screen Size
Display Resolution
Touch Sensitive Screen
Full HD
HD Type
Graphics
On-Board Graphics Adapter Model
Discrete Graphics Adapter Model
On-Board Graphics Adapter ID
Display Supported by On-Board Grap
On-Board Graphics Adapter Dynamic Frequency
On-Board Graphics Adapter Base Frequency
Audio
Audio System
Camera
Networking
Cabling
Ethernet LAN Data Rate
WiFi Standard
Ports & Interfaces
Mini DisplayPort/Thunderbolt Combo Port
CardBus PCMCIA Slot
S/PDIF Out Port
Headphone Out Port
Ethernet LAN Ports
DVI Port
DisplayPort
VGA Port
ESATA/USB 2.0 Port
USB 2.0 Port
LAN/VGA Combo Port
Performance
Integrated TV Tuner
Keyboard
Numeric Keypad
Pointing Device
Operating System/software
Operating System
Operating System Architecture
Processor Special Features
Intel VPro Technology
Supported Instruction Set
Processor Code
CPU Configuration (max)
Processor Package Size
Graphics & IMC Lithography
Intel Identity Protection Technology Version
Processor ARK ID
Battery
Battery Cell Count
Battery
Power
AC Adapter Input Voltage
AC Adapter Frequency
Security
Weight & Dimensions
Weight
Height At Front
Depth
Height At Rear
Width
Packaging Data
Other Features
Intel Visual Technology

8 Awards

Digitaltrends.com Editor's Choice pcworld.com_techhive.com Business Ready tek.no Recommended Laptopmag.com Editor's Choice computershopper.com Editor's Choice insidehw.com Approved PC Mag Editor's Choice pcfoster.pl Recommended

Expert Reviews

(43)
1 June 2012

The Lenovo ThinkPad T420 is a notebook which will take you through fire and water. The most amazing spec is the battery and the most amazing feature is the keyboard. You'll have to refrain from...

23 April 2012

In a nutshell, the Lenovo ThinkPad T420s is a powerful business portable that's a pleasure to use, but not exactly a looker. With its contourless, black plastic body and sharp edges, it looks like... Read more…

Excellent performance
Great keyboard
Good build quality
Sharp screen
160GB SSD
Price
Battery life
Gets quite hot
Expensive
Disappointing battery life
23 April 2012

In a nutshell, the Lenovo ThinkPad T420s is a powerful business portable that's a pleasure to use, but not exactly a looker. With its contourless, black plastic body and sharp edges, it looks like... Read more…

26 March 2012

A powerful and versatile laptop, but poor battery life and business-specific graphics mean it should only appeal to professionals...

15 March 2012

Much of the ThinkPad's design ? and particularly the excellent keyboard ? is traditional, but it packs plenty of up-to-date specs too: Core i7 CPU, hybrid discrete/integrated graphics, solid-state...

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User Reviews

(67)
Reviewed 21 June 2013 by Greyowl

I use a T500 for work and got a T420 ( second hand ) at about 25% of the new price - as a backup and for the Nvideo grapics engine for CAE/FEA. I wouldn't be without these machines. OK reviewers... Read more…

Reviewed 24 December 2014 by Andrew Johns
(Verified Purchase)

Gave a lot of thought before buying this used but my worries were groundless. Laptop arrived well packed in its own protective bubble, and in a sturdy box, well insulated from any travel shocks !... Read more…

Reviewed 18 October 2014 by Toomas Laigna
(Verified Purchase)

Since I needed a good, reliable and not too slow professional machine for work and also enjoy playing games, I was faced with a choice: either buy a high-end laptop to fit both needs or slice the... Read more…

Reviewed 25 February 2015 by David Lammin
(Verified Purchase)

10 years or so using amazon and never done a review until now. I'm in 2nd year doing a degree in computing and needed a solid laptop, I decided on t420 and took a punt on refurbished one. Delivery... Read more…

Reviewed 9 February 2015 by Tomasz
(Verified Purchase)

Laptop is working fine, but looks like piece of s***, like someone was using axe to chop of all rubbers and switches. Battery with broken little hooks- gives 15 min work- you can buy replacement... Read more…

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