2GB Memory RAM Upgrade for the Lenovo Thinkpad R61 Series, T60 Series, T61 Series, X60 Series and X61 Series Laptops (DDR2-667, PC2-5300, SODIMM) at Amazon.com
Thinkpad X60 I saved when it was being thrown away. Put in a spare SSD and some RAM and built Gentoo with moderate optimisations. Runs quite nicely! : r/Gentoo
Arch Memory 2GB 200-Pin DDR2 667 MHz So-dimm RAM for Lenovo ThinkPad X60 Tablet 6367 Series at Amazon.com
Lenovo ThinkPad X60 Tablet review
final upgrade to my x60 - 10th gen i7, 32gb of ram, usb c charging, 512 gb nvme : r/thinkpad
ThinkPad X series - Wikipedia
Lenovo IBM ThinkPad X60 Intel Core Duo 1.83GHz 512 MB RAM 250GB HDD | eBay