2pcs. 16GB DDR3, 1600MHz, ECC, CL9, 2R, X4, 1.5V, Registered, DIMM DDR3-PC12800 Lifetime exchange or repair warranty against manufacturing defects. by Computer Memory Solutions Brand Computer Memory Solutions Maximum Memory: 64 GB non-ECC UDIMM 64 GB ECC UDIMM 128 GB Reg ECC DIMM 256
GB LRDIMM Expansions: 8 Socket (s)
Compatible with: ASUS Z9 Server Board Z9PA-D8, Z9PA-D8C, Z9PA-U8
Important: If 4GB is installed, the recognized memory may be reduced to 3.5GB or less (depending on system configuration and memory allocation). Maximum configurations require a 64-bit operating system. This system supports either Registered ECC (RDIMM), ECC Unbuffered (ECC UDIMM) or Load Reduced (LRDIMM) memory. Mixing RDIMMs, ECC UDIMMs and LRDIMMs is not supported within this system. Modules must be ordered and installed in PAIRS for Dual Channel mode, or in groups of FOUR for Quad Channel mode. Kingston offers "K4" kit part numbers for Quad Channel mode. 1866MHz memory can only be supported with certain Intel Xeon E5-2600 v2 series processors. Check Asus documentation for actual tested memory speeds. When using the Intel E5-1600 series CPU only one CPU socket can be populated and only the corresponding DIMMs sockets can be utilized. The Intel E5-1600 only supports ECC UDIMMs and RDIMMs