How to upgrade RAM memory in Lenovo ThinkPad T510 laptop - YouTube
8GB (4GBx2) Team High Performance Memory RAM Upgrade For Lenovo ThinkPad W510 Series W700 Series Laptop. The Memory Kit comes with Life Time Warranty. at Amazon.com
Lenovo ThinkPad W510 (4319) - full specs, details and review
I'm happy to report that W510 can be upgrade to 32GB of RAM : r/thinkpad