HP Server rp7420 HP 9000 rp7420 Server - User Service Guide, Fifth Edition - Page 24

Table 1-2 Cell Board CPU Load Order (continued) Number of Socket 0 Location CPUs Installed Six CPU installed Eight CPU installed Socket 1 Location CPU or empty CPU installed Figure 1-8 CPU Locations on Cell Board Socket 2 Location CPU installed CPU installed Socket 3 Location Empty or CPU CPU installed 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 DIMM Capacity 256 MB 512 MB 1 GB 2 GB 4 GB Total Capacity 8 GB 16 GB 32 GB 64 GB 128 GB Memory Component Density 32 Mb 64 Mb 128 Mb 256 Mb 512 Mb 24 Overview