Visit our Business Solutions website >>

Lenovo Thinkpad T420

alaTest has collected and analyzed 460 reviews of Lenovo Thinkpad T420. The average rating for this product is 4.1/5, compared to an average rating of 4.1/5 for other Laptops for all reviews. Reviews about the usability and keyboard are on the whole positive. The battery and price also get good opinions. The touchpad and sound get negative reviews, while views about the energy efficiency and screen are mixed.

performance, price, battery, keyboard, usability

size, image quality, sound, touchpad

We analyzed user and expert ratings, product age and more factors. Compared to other Laptops the Lenovo Thinkpad T420 is awarded an overall alaScore™ of 88/100 = Very good quality.

See all Lenovo Laptops

Review analysis

(Based on 460 reviews)

Expert Reviews  

User Reviews  

Showing 400 review(s)

Expert Reviews User Reviews


Below is a list of reviews for this or similar products. If you think this grouping is wrong please click here to flag.
Read more on our FAQ’s page.
Showing 1 - 48 of 400 Show Reviews: in English | in other languages (60)

Consumer review by: ( review summary for Lenovo Thinkpad T420


alaTest has collected and analyzed 5 user reviews of Lenovo Thinkpad T420 from The average user rating for this product is 4.2/5, compared to an average user rating of 4.0/5 for other Laptops on

100% of the reviews on give this product a positive rating.

This summary is based on the product: Lenovo Thinkpad T420 Laptop 14-inch Notebook Genuine Windows 7 Professional Core i5 2.50GHz 4GB Ram 320GB HDD DVD+/-RW Wireless Webcam HD Graphics Wif

Apr, 2016

Consumer review by: ( review summary for Lenovo Thinkpad T420


alaTest has collected and analyzed 33 user reviews of Lenovo Thinkpad T420 from The average user rating for this product is 3.5/5, compared to an average user rating of 4.0/5 for other Laptops on Reviewers really like the reliability and price. The screen and usability are also mentioned favorably.

usability, screen, price, reliability

70% of the reviews on give this product a positive rating.

This summary is based on the products: Lenovo ThinkPad T420 4177L55 14" LED Notebook - Core i5 i5-2520M 2.50GHz - Black (4177L55)Lenovo FASTSELLER TP T420 I5-2520M NEW Notebooks

Apr, 2016

Expert review by: Martina Osztovits (

Review Lenovo Thinkpad T420 Notebook


An invariable constant. The tried and tested Thinkpad design has

Good application performance; Comprehensive communication configuration; Pleasant input devices; Keyboard light; Battery options; Display port

Low display contrast; Vertical viewing angle dependency; No USB 3.0

The Dell Latitude E6420, the HP Elitebook 8460p, perhaps even the Acer Travelmate 8472TG.

Apr, 2011

Expert review by: Scott Stein (

Lenovo ThinkPad T420 review:


Compared with laptops seen at CES 2012 --ultrabooks and other sleekly designed variations--the ThinkPad T420 is a dinosaur, from the outside, at least. Thick and bulky, with a keyboard studded with enough auxiliary buttons to look like a space shuttle...

The ThinkPad T420 has several things going for it: performance, plenty of ports, excellent battery life, and a very comfortable keyboard.

The design of the bulky, business-oriented T420 is positively Stone Age. It's also priced well above similar consumer laptops. No HDMI, no USB 3.0.

The Lenovo ThinkPad T420 is as straight-up and unassuming as a business laptop can be on the surface, souped up with faster performance, long battery life, and a flexible selection of ports under the hood.

Feb, 2012

Expert review by: Charles P. Jefferies (

Lenovo ThinkPad T420 Review: The Best Business Laptop?


The 14-inch ThinkPad T420 business notebook has an excellent screen, keyboard, and battery life. We explain why this business rugged notebook is a great choice for hard-working customers.

Good build quality ; Excellent keyboard and trackpad/touchpad ; High-resolution 900p anti-glare screen ; 10 hours of battery life

Weak speakers ; Design might not appeal to all

Sep, 2011

Editor's Choice!

Expert review by: Avram Piltch (

Lenovo ThinkPad T420


A 14-inch powerhouse, the Lenovo ThinkPad T420 delivers all-day endurance at an affordable price.

With its epic battery life, awesome keyboard, solid sound, durable design, and high-res screen, the ThinkPad T420 offers nearly everything you'd want in a 14-inch business system for a good price. If you're looking for something a bit lighter, consider...

Aug, 2011

Expert review by: PC Perspective (

Lenovo ThinkPad T420 Review: Kickin' It Old School


And as if to remind me of it, a Lenovo ThinkPad T420 suddenly appeared at my doorstep. Okay, that's exaggerating a bit - I did know it was coming - but the timing of receiving an old-school laptop couldn't have been better. Not only because I wanted to...

Feb, 2012

Expert review by: InsideHW (

Expert Review


In accordance with ASUS philosophy of presenting new devices in short periods of time, not long after the first Fonepad, new models, Fonepad Note 6 and Fonepad 7, have been announced. Unfortunately, f... Mechanical keyboard are conceptual way of going...

Oct, 2011


Expert review by: Jamie Bsales (

Lenovo ThinkPad T420


Change comes slowly to the venerable ThinkPad T series, but when it does, it's usually worth waiting for. The Lenovo ThinkPad T420—the bread and butter of the ThinkPad line—may look the same as the T410 it replaces, but important changes under the hood...

Strong performance ; Excellent battery life ; Business-rugged ThinkPad architecture ; Unique videoconferencing features

Bland styling ; Small touch pad ; No Blu-ray option or USB 3.0 ports ; Low-res Webcam

With Sandy Bridge-grade speed, great battery life, durability features, and other goodies, the ThinkPad T420 is arguably today's best business thin-and-light. (But yes, it’s still basic black.)

Oct, 2011

Expert review by: (

Lenovo ThinkPad T420 Review


The Lenovo ThinkPad T420 14-inch screen laptop is one of the latest additions to the iconic ThinkPad lineup of business laptops. While the ThinkPad T420 is positioned as a business laptop, I've always been a fan of ThinkPads for use in an education...

The ThinkPad T420 or T420i is a great option as a college laptop. It has the battery life, usability and build quality it takes to get work done around campus. The option of configuring either a budget level laptop of around $800 or high-end laptop...

Apr, 2011

Expert review by: (

Lenovo ThinkPad T420: First Laptop to Capture UL Environment Gold Rating


Lenovo has become the first company to earn a Gold rating for the laptop category in UL Environment's new Sustainable Product Certification (SPC) for high tech equipment. UL Environment tested the upcoming ThinkPad T420 laptop, to be introduced later...

Expert review by: (

Lenovo ThinkPad T420


The Lenovo ThinkPad T420 is a typical-looking 14-inch business laptop that has a few things going for it. First, it has really good performance due to its Intel Core i5 CPU and 4GB of RAM. It also has a decent amount of connectivity, including eSATA,...

Product Specifications


Front Camera: Yes
Front camera resolution:1280 x 720


Number of displays supported by on-board graphics adapter:2
On-board graphics adapter ID:0x116

Ports & interfaces

LAN/VGA combo port: No
Mini DisplayPort/Thunderbolt combo port: No


Conflict Free processor: No
ECC supported by processor: No
Integrated 4G WiMAX: Yes
Maximum internal memory supported by processor:16
Maximum number of PCI Express lanes:1
Memory bandwidth supported by processor (max):21.3
Memory channels supported by processor:Dual
Memory clock speeds supported by processor:1066,1333
Memory types supported by processor:DDR3-SDRAM
Processor cache level:L2 / L3
Processor cache type:L3 / SmartCache, L3
Processor codename:Sandy Bridge
Processor Series:Intel Core i5-2400 Mobile series / Intel Core i5-2500 Mobile series
Thermal Design Power (TDP):35

Processor special features

Intel 64: Yes
Intel Clear Video Technology: No
Intel Identity Protection Technology version:1.00
Intel Small Business Advantage (SBA): No
Intel Virtualization Technology (VT-x):Y / Yes
Intel Virtualization Technology for Directed I/O (VT-d):No / Yes
Processor package size:37.5


Cable lock slot type:IBM
Password protection: Yes