HP Vectra VL 5/xxx HP Vectra VL 5/xx Series 3 PC - Service Handbook - Page 6

18 HP Vectra VL 5/xx Series 3 PC Main Memory The HP Vectra VL 5/xx PC has three banks on the system board for installing main memory; banks A, B and C. Each bank consists of two sockets. The PC is supplied with 8 MB or 16 MB of main memory (two 4 MB or two 8 MB memory modules installed in bank A). It is recommended to install memory modules in pairs, so that each bank with memory installed contains two memory modules of the same size. This enables the bank to be accessed as 64-bit memory, and offers better performance than a bank containing only one memory module (accessed as 32-bit memory). Main memory can be installed up to a maximum of 192 MB. The HP Vectra VL 5/xx PC supports memory interleaving when four memory modules of the same size are installed in either banks A and B or banks B and C. Configurations using memory interleaving will provide the best memory performance. Recommended memory configurations For a TOTAL memory of: 8 MB 16 MB 16 MB 24 MB 24 MB 32 MB 48 MB 64 MB 80 MB 96 MB 128 MB 128 MB 144 MB 160 MB 192 MB Install memory modules in these banks: Bank A Bank B Bank C A1 A2 B1 B2 C1 C2 4 MB 4 MB - - - - 4 MB 4 MB 4 MB 4 MB - - 8 MB 8 MB - - - - 4 MB 4 MB 4 MB 4 MB 4 MB 4 MB 4 MB 4 MB 8 MB 8 MB - - 8 MB 8 MB 8 MB 8 MB - - 16 MB 16 MB 8 MB 8 MB - - 16 MB 16 MB 16 MB 16 MB - - 32 MB 32 MB 8 MB 8 MB - - 16 MB 16 MB 16 MB 16 MB 16 MB 16 MB 16 MB 16 MB 16 MB 16 MB 32 MB 32 MB 32 MB 32 MB 32 MB 32 MB - - 32 MB 32 MB 32 MB 32 MB 8 MB 8 MB 32 MB 32 MB 32 MB 32 MB 16 MB 16 MB 32 MB 32 MB 32 MB 32 MB 32 MB 32 MB Interleaving No Yes Yes Yes No Yes No Yes No Yes Yes Yes Yes Yes Yes 18-6 HP Vectra VL 5/xx Series 3 PC Medium-Profile Desktop Vectras