from recent RAM upgrades, i have three 1GB ram sticks that i'm not using. they're all DDR3 PC3-8500 SODIMMs, which work with all the new unibody macbooks and MBPs, new mac minis. i'm not sure about the imacs, but they might work. if you're looking for some, let me know. i didn't post this in the Yard Sale because they're *exact* matches for all mac computers.