The following configurations are not validated, supported, or recommended:
Mixing of RDIMMs and UDIMMs
Mixing memory type, size, speed, and/or rank
Mixing memory vendors
The Intel® Server Board S5520HC has 12 DIMM slots. The Intel® Server Board S5500HCV has 9 DIMM slots.
Both server boards support DDR3 800, DDR3 1066, and DDR3 1333 Registered DDR3 Memory (RDIMM), ECC Unbuffered DDR3 memory (UDIMM). Please refer to the Technical Product Specification for detail information about memory configuration.