4GB DDR3-1333 ECC REG LP PBF w/Heatsink (1-GigaBit x8 + ECC REG)
Hynix 4GB DDR3-1333 ECC REGISTERED ( PC3-10600ER-9-10-E0) LP PBF w/Heatsink (1-GigaBit x8, Dual-Rank, + ECC REG, HMT125R7BFR4C-H9TB or HMT151R7BFR4C-H9-DB-C)
8GB DDR3-1600 ECC Unbuffered 1.35V SO-DIMM PC3L-12800S module
8GB Module - DDR3L SO-DIMM - ECC - Unbuffered - 1600MT/s - PC3L-12800 - 1.35V - Micron Chips