32GB PC3L-10600L (1333Mhz) ECC Registered Load-Reduced Server Memory R – TechMikeNY
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
Server RAM 32GB 4Rx4 PC3L-10600R REG ECC 16gb DDR3 1333MHz 8GB Registered Memory for Dell PowerEdge C6100 C6105 C6145 C6220 II - AliExpress
Samsung DDR3-1600 32GB/4Gx72 ECC/REG CL11 Sever Memory M386B4G70DM0-YK04 at Amazon.com
32GB PC3-14900L Quad Ranked DDR3 1866mhz ECC LRDIMM Memory (1x 32GB) // STI Kansas City