Memory Support

The X8SIE supports up to 16GB of DDR3 ECC UDIMM or up to 32GB of ECC DDR3 RDIMM (1333/1066/800 MHz in 6 DIMM slots.) Populating these DIMM modules with a pair of memory modules of the same type and same size will result in interleaved memory, which will improve memory performance. Please refer to the table below:

Platform DIMM Type Intel® Xeon® Series Processors
X8SIE Non-ECC UDIMM Only Not Supported
ECC UDIMM Only Supported (see Table 1)
RDIMM Only (with ECC) Supported (see Table 2)
Mixed ECC with non-ECC Not Supported
Mixed UDIMM/RDIMM Not Supported
Table 1 - DDR3 ECC/Unbuffered (UDIMM) Memory Support
ECC UDIMM 1Gb (x8 DRAM) 2Gb (x8 DRAM)
Single Rank Up to 4GB (4 x 1GB DIMM Modules)* Up to 8GB (4 x 2GB DIMM Modules)*
Dual Rank Up to 8GB (4 x 2GB DIMM Modules)* Up to 16GB (4 x 4GB DIMM Modules)*
Quad Rank Not Supported Not Supported
*Note: For ECC UDIMMs, only Slot 1 and Slot 2 may be populated per channel.
Table 2 -DDR3 ECC Registered (RDIMM) Memory Support
RDIMM 1Gb (x8 DRAM) 2Gb (x8 DRAM)
Single Rank Up to 6GB (6 x 1GB DIMM Modules) Up to 12GB (6 x 2GB DIMM Modules)
Dual Rank Up to 12GB (6 x 2GB DIMM Modules) Up to 24GB (6 x 4GB DIMM Modules)
Quad Rank Up to 16GB (4 x 4GB DIMM Modules)** Up to 32GB (4 x 8GB DIMM Modules)**
Note: All other memory sizes, types, die, density, that are not listed in these tables are NOT supported. **For Quad Rank RDIMMs, only Slot 1 and Slot 2 arepopulated per channel.


Memory Population Guidelines

Please follow the tables below when populating the X8SIE.
DDR3 ECC UDIMM Memory
DIMM Slots per Channel DIMMs Populated per Channel DIMM Type POR Speeds Ranks per DIMM (any combination)
3 1 Unbuffered DDR3 ECC 1066, 1333 Single Rank, Dual Rank
3 2 Unbuffered DDR3 ECC 1066, 1333 Single Rank, Dual Rank
3 3 N/A Not Supported Single Rank, Dual Rank
DDR3 ECC RDIMM Memory
DIMM Slots per Channel DIMMs Populated per Channel DIMM Type POR Speeds Ranks per DIMM (any combination)
2 1 Registered DDR3 ECC 1066, 1333 Single Rank, Dual Rank
2 1 Registered DDR3 ECC 1066 Quad Rank
2 2 Registered DDR3 ECC 1066, 1333 Single Rank, Dual Rank
2 2 Registered DDR3 ECC 800* Quad Rank
3 3 Registered DDR3 ECC 800* Single Rank, Dual Rank
3 3 N/A Not Supported Quad Rank
*Note: 1066 RDIMMs running at 800MHz-BIOS will be automatically downgraded to 800MHz speed.