I have a Lenovo Thinkpad T420 Core i5 2520M. What is the maximum memory I can have - 8 GB or 16 GB? - Quora
![Lenovo ThinkPad T420 i5 2.5GHz 8GB RAM 120GB Solid State Hard Drive 14" HD LCD Windows 10 Grade A Used - Walmart.com Lenovo ThinkPad T420 i5 2.5GHz 8GB RAM 120GB Solid State Hard Drive 14" HD LCD Windows 10 Grade A Used - Walmart.com](https://i5.walmartimages.com/asr/eb6fb2f2-7530-4c31-b6c9-3c10e8e8c7b9_2.dcfe54afe820aa8400046d749b8295f1.jpeg)
Lenovo ThinkPad T420 i5 2.5GHz 8GB RAM 120GB Solid State Hard Drive 14" HD LCD Windows 10 Grade A Used - Walmart.com
![Amazon.com: Lenovo ThinkPad T420 Business Laptop - Windows 10 Pro - Intel Core i5-2520, 256GB SSD, 8GB RAM, 14.0" HD (1366x768) Anti-Glare Display, ThinkLight Keyboard Light, DVD/CD-RW Drive, VGA : Electronics Amazon.com: Lenovo ThinkPad T420 Business Laptop - Windows 10 Pro - Intel Core i5-2520, 256GB SSD, 8GB RAM, 14.0" HD (1366x768) Anti-Glare Display, ThinkLight Keyboard Light, DVD/CD-RW Drive, VGA : Electronics](https://m.media-amazon.com/images/I/61wZHfRAGoL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Lenovo ThinkPad T420 Business Laptop - Windows 10 Pro - Intel Core i5-2520, 256GB SSD, 8GB RAM, 14.0" HD (1366x768) Anti-Glare Display, ThinkLight Keyboard Light, DVD/CD-RW Drive, VGA : Electronics
![Lenovo ThinkPad T420 Business Laptop, Intel Core i7-2nd Gen. CPU, 8GB RAM, 256GB SSD, 14 Display, Windows 10 Pro, Refurbished Laptop Lenovo ThinkPad T420 Business Laptop, Intel Core i7-2nd Gen. CPU, 8GB RAM, 256GB SSD, 14 Display, Windows 10 Pro, Refurbished Laptop](https://b2c.cdn.myrapidtrack.com/products/images/1641468990169377145.jpg)
Lenovo ThinkPad T420 Business Laptop, Intel Core i7-2nd Gen. CPU, 8GB RAM, 256GB SSD, 14 Display, Windows 10 Pro, Refurbished Laptop
![Lenovo ThinkPad T420s Configurations, Software, & Verdict | Business Laptop Reviews | Laptop Reviews | Laptop Mag Lenovo ThinkPad T420s Configurations, Software, & Verdict | Business Laptop Reviews | Laptop Reviews | Laptop Mag](https://cdn.mos.cms.futurecdn.net/CFbNbbLthgXfBRRXc275pd.jpg)
Lenovo ThinkPad T420s Configurations, Software, & Verdict | Business Laptop Reviews | Laptop Reviews | Laptop Mag
![CMS 16GB (2X8GB) DDR3 10600 1333MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Lenovo® Thinkpad T420 4177, 4178, 4180, 4236 Series - A13 at Amazon.com CMS 16GB (2X8GB) DDR3 10600 1333MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Lenovo® Thinkpad T420 4177, 4178, 4180, 4236 Series - A13 at Amazon.com](https://m.media-amazon.com/images/I/71eVw9HLcEL.jpg)
CMS 16GB (2X8GB) DDR3 10600 1333MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Lenovo® Thinkpad T420 4177, 4178, 4180, 4236 Series - A13 at Amazon.com
![8GB Stick for IBM Lenovo ThinkPad T Series T420 T420i T420s T520 T520i. SO-DIMM DDR3 Non-ECC PC3-10600 1333MHz RAM Memory. Genuine A-Tech Brand. at Amazon.com 8GB Stick for IBM Lenovo ThinkPad T Series T420 T420i T420s T520 T520i. SO-DIMM DDR3 Non-ECC PC3-10600 1333MHz RAM Memory. Genuine A-Tech Brand. at Amazon.com](https://m.media-amazon.com/images/I/71ejUg1URlL._AC_UF894,1000_QL80_.jpg)
8GB Stick for IBM Lenovo ThinkPad T Series T420 T420i T420s T520 T520i. SO-DIMM DDR3 Non-ECC PC3-10600 1333MHz RAM Memory. Genuine A-Tech Brand. at Amazon.com
![Amazon.com: Lenovo ThinkPad T420 14" LED Notebook Intel Dual Core i7-2640M 2.80GHz 8 GB DDR3 RAM 1 TB HD DVD-RW WiFi Bluetooth Webcam Windows 7 Professional 64-bit : Electronics Amazon.com: Lenovo ThinkPad T420 14" LED Notebook Intel Dual Core i7-2640M 2.80GHz 8 GB DDR3 RAM 1 TB HD DVD-RW WiFi Bluetooth Webcam Windows 7 Professional 64-bit : Electronics](https://m.media-amazon.com/images/I/61ZrABYjSXL._AC_UF350,350_QL80_.jpg)