Dimms; Memory Subsystem; Dimm Sizes Supported - HP 9000 Integrity rp8440 Installation Manual

The memory subsystem comprises four independent quadrants. Each quadrant has its own
memory data bus connected from the cell controller to the two buffers for the memory quadrant.
Each quadrant also has two memory control buses: one for each buffer.
Figure 1-8 Memory Subsystem

DIMMs

The memory DIMMs used by the server are custom designed by HP. Each DIMM contains DDR-II
SDRAM memory that operates at 533 MT/s. Industry standard modules do not support the high
availability and shared memory features of the server. Therefore, industry standard DIMM
modules are not supported.
The server supports DIMMs with densities of 1, 2, 4, and 8 GB.
DIMM size, the resulting total server capacity, and the memory component density. Each DIMM
is connected to two buffer chips on the cell board.
Table 1-2 DIMM Sizes Supported
DIMM Size
1 GB
2 GB
4 GB
8 GB
22 Server Overview
Total Capacity
64 GB
128 GB
256 GB
512 GB
Table 1-2 lists each supported
Memory Component Density
256 Mb
512 Mb
1024 Mb
2048 Mb