B-1

Memory DIMM Configurations

The memory board contains sixteen 168-pin DIMM sockets for a total of up to 4 GB of system memory, using 256MB DIMMs. See Figure B-1. DIMM sockets on the board are organized as four 72-bit wide, 2-, or 4- way interleaved banks. For example, a 4-way interleaved bank requires four DIMMs. DIMM sockets accept 168-pin single- or double-sided DIMMs. A bank must be populated using identical DIMMs. DIMMs may vary in size from one bank to the other, but all DIMMs must be the same speed. Timing requires 60 ns fast page devices.

A memory DIMM upgrade kit consists of 2 or 4 identical (of the same size and type) DIMMs defined as:

2 x 32MB DIMMs = 64MB

4 x 32MB DIMMs = 128MB

4 x 64MB DIMMs = 256MB

4 x 128MB DIMMs = 512MB

4 x 256MB DIMMs = 1GB.

The 2 x 32MB DIMMs upgrade kit is used only for servers that were originally shipped with 64MB (two 32MB DIMMs) of memory.

Figure B-1. System Board DIMM Sockets

P11

P12

P13

P14

P15

P16

P17

P18

Bank 0

Bank 1

Bank 2

Bank 3

P3

P4

P5

P6

P7

P8

P9

P10

The following table describes memory requirements and characteristics:

Memory Configurations

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Packard Bell MH4000 manual Memory Dimm Configurations, Figure B-1. System Board Dimm Sockets