HP 9000 rp7420 Server - User Service Guide, Fifth Edition

Table 1-2 Cell Board CPU Load Order (continued)
Socket 3 LocationSocket 2 LocationSocket 1 LocationSocket 0 LocationNumber of
CPUs Installed
Empty or CPUCPU installedCPU or emptyCPU installedSix
CPU installedCPU installedCPU installedCPU installedEight
Figure 1-8 CPU Locations on Cell Board
DIMMs
Custom designed by HP, each DIMM contains 36 x 4 SDRAM memory components similar to
PC-133 memory, but qualified to run at 125 MHz. They have a low-voltage TTL interface. The
CEC does not support traditional DRAMs.
The HP 9000 rp7420 server supports DIMMs with 256 MB, 512, MB, 1 GB, and 2 GB capacity.
Table 1-3shows each DIMM supported with its associated capacity, the resulting total system
capacity, and the memory component density.
DIMMs must be loaded in sets of two at specific locations. For best performance, HP recommends
loading sets of eight DIMMs.
Table 1-3 HP 9000 rp7420 server DIMMs
Memory Component DensityTotal CapacityDIMM Capacity
32 Mb8 GB256 MB
64 Mb16 GB512 MB
128 Mb32 GB1 GB
256 Mb64 GB2 GB
512 Mb128 GB4 GB
24 Overview