16GB Total. Two 8GB PC3-8500 204 pin SODIMM DDR3 1066MHz Genuine CMS brand, CMS is one of the most trusted names in the Computer Memory industry and this product carries a Lifetime Warranty from CMS MAX MEMORY: 16GB SOCKETS 2 COMPATIBLE WITH: Apple MacBook Pro "Core 2 Duo" 2.66 13" Mid-2010 Specs Identifiers: Mid-2010 13" - MC375LL/A - MacBookPro7,1 - A1278 - 2351. Originally, both the official and actual maximum RAM was 8 GB. However, if running OS X 10.7.5 or higher, updated with the latest EFI, and equipped with proper specification memory modules, this model can support up to 16 GB of RAM.