Macbook late 2009 Memory upgrade from 2gb to 8gb of ram! Big Improvements! - YouTube
My 2009 Macbook Unibody still running hot in 2020 with a new SSD and maxed out RAM : r/mac
OWC 6GB (2GB + 4GB) PC8500 DDR3 1066MHz SO-DIMMs Memory Compatible with Late 2008, Early 2009, Early 2010 MacBook, MacBook Pro Unibody Models, 2009/2010 Mac Mini, 2009 iMac Models at Amazon.com
A-Tech 8GB (2 x 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 Kit at Amazon.com
How to Upgrade MacBook Pro RAM (2009, 2010, 2011, 2012): EveryMac.com
Macbook Pro RAM 4GB (2 x 2GB) 2009 2010 2011 2012 A1278 A1286 13 15" DDR3 10600s | eBay
Amazon.com: OWC 16GB (2 X 8GB) DDR3 1333MHz 240-pin DIMM ECC Memory Compatible with Mac Pro 2009-2012 'Nehalem' & 'Westmere' Models (OWC1333D3W8M16K) : Everything Else