A-Tech 4GB PC3-8500 DDR3 1066/1067 MHz RAM for MacBook, MacBook Pro, iMac, Mac Mini (Late 2008, Early/Mid/Late 2009, Mid 2010) | 204-Pin SODIMM Memory Upgrade Module at Amazon.com
2008 MacBook Review: Better than a modern MacBook in many ways
Purchased this early 2008 MacBook for 50$ with a new. battery. Upgraded RAM and to SSD, downloaded Linux with a macOS theme. It runs perfectly, and can easily play HD on YouTube