DIMM DDR3 ECC Registered PC3-12800 1600MHz Dual Rank RAM Memory 16GB KIT (2 x 8GB) For HP-Compaq ProLiant Series at Amazon.com
CMS 16GB (4X4GB) DDR3 12800 1600MHz ECC Registered DIMM Memory Ram Compatible with HP/Compaq Workstation Z620 Ddr3 Ecc Reg for Server Only at Amazon.com
Kingston ValueRAM 16GB 1333MHz DDR3 PC3-10600 ECC Reg CL9 DIMM DR x4 1.35V Server Memory KVR13LR9D4/16 at Amazon.com
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. at Amazon.com