Qty 2x IBM 53P1639 FC #3046 2048MB Main Storage DIMM DDR1 for 9406-570, 9406-825
This Feature provides Main Storage Memory on a single DIMM utilizing 512Mb DDR-1 Technology.
For the Model 570:Supported for model upgrades only. Four are required.
For the Model 825:Up to 24 DIMMs may be installed for a maximum capacity of 48GB.Main storage DIMMs are installed directly onto the processor cards.Each processor card has eight DIMM slots.The eight slots are arranged in two sets of four.
The DIMMs must be installed in sets of four (quads).Each set of four DIMMs must be the same memory capacity and technology.
Each system order must have at least one set of three main storage DIMM quads (12 DIMMs total) installed. An exception is the 2GB memory capacity point, where two quads (eight DIMMs total) are allowed but not recommended.
For the 3/6-way processor, three processor cards (three Multi-chip Modules (MCMs)) are installed in the system. There is a total of 24 DIMM slots in which 8, 12, 16, 20 or 24 memory DIMMs may be installed.
The following main storage requirements apply:
The marketing configurator defaults to 3GB of memory. 2GB of total main storage is not recommended by IBM.
Except on systems with 2GB of memory capacity, no Single Chip Model (SCM) board is allowed to contain more than twice the memory capacity of any other processor.
The marketing configurator determines the correct number and combination of memory features to fulfill a chosen increment. It is based on the minimum number of memory features required to meet the increment within the requirements of one quad per SCM board. No SCM board having more than two times the total memory of any other SCM board is allowed.