4GB DDR3 PC10600 1333MHz PC3-10600 for HP Compaq 6200 PRO Microtower SFF Memory | eBay
OWC 32GB (2 x 16GB) PC10600 DDR3 ECC-R 1333MHz DIMMs Memory Compatible with Mac Pro Early 2009 & Late 2010 'Nehalem' & 'Westmere' Systems and Early 2009 Xserve. (OWC85MP3S9M032K) at Amazon.com