Installing Main Memory - HP Vectra XM5 3 Supplementary Manual

Installing Main Memory

The HP Vectra XM 5/xx series 3 PC has six sockets on the system board, labeled A1, A2,
B1, B2, C1, and C2 in the diagram below. Each pair of mem ory sockets forms a bank. Slots
A1 and A2 form bank 1, slots B1 and B2 form bank 2, and slots C1 and C2 form bank 3. For
optimum performance, the memory modules should be installed in pairs (modules of the
same size) in the same bank. A maximum of 192 MB may be installed.
When additional memory modules are installed, the following rules must be applied to get
the best performance:
1. Install two identical-size main memory modules in the same bank to enable 64-bit wide access to this
bank.
2 Install four identical-size main memory modules in bank A and B to enable memory interleaving
between the two banks.
When 36-bit main memory modules are installed, it is possible to enable par ity checking by
enabling the parity switch (PARIT) on the system board.
NOTE Remove factory installed 32-bit SIMMs before enabling the parity switch. All SIMMs
must be 36-bits wide for parity checking.
HP Vectra XM 5/xx Series PC Familiarization Guide
41
2 PC Hardware Structure