Main Memory - HP Vectra XU 6/XXX Optimization Manual

NOTE
128-bit Memory
2 Technical Reference

Main Memory

Main Memory
The main memory in your PC consists of Double Interline Memory
Modules (DIMMs). 32 MB or 64 MB are fitted as standard (depending
on the model you ordered). The main memory can be upgraded to a
maximum of 512 MB. Memory modules are available in three
capacities: 16 MB, 32 MB and 64 MB. The maximum memory capacity
(512 MB) is obtained by installing eight 64 MB DIMM modules.
The DIMM modules used by your HP Vectra XU PC use a 5 volt power
source. DIMM modules that use a 3.3 volt power source are not
supported and must not be installed.
Each DIMM module stores 64 bits of data plus 8-bits of Error
Correcting Code (ECC) code. Access to the memory modules is
controlled by a memory controller on the processor's local bus. This
controller manages the modules in pairs to create single, 128-bit wide
logical banks.
Memory
controller
Processor's local bus (64-bits)
58 English
128-bits
Memory bank 1
Memory bank 2
Memory bank 3
Memory bank 4
DIMM memory modules