Lenovo ThinkPad 15.6" Laptop, Intel Core 2 Duo T6670, 250GB HD, DVD Writer, Windows 7 Professional, 2847CZU - Walmart.com
CMS 8GB (2X4GB) DDR3 10600 1333MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Lenovo® Thinkpad L512 2550; 2597; 2598, 4444, 4447 - A29 at Amazon.com
16GB KIT (2 x 8GB) for IBM Lenovo ThinkPad L Series L412 L420 L512 L520. SO-DIMM DDR3 Non-ECC PC3-10600 1333MHz RAM Memory. Genuine A-Tech Brand. at Amazon.com