Specifications

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3: Removing and Installing Baseboard Components

the ranges defined as memory holes using configuration registers). The system supports

both base (conventional) and extended memory.

• Base memory is located at addresses 00000h to 9FFFFh (the first 1 MB).

• Extended memory begins at address 0100000h (1 MB) and extends to 3FFFFFFFFh

(16 GB), which is the limit of supported addressable memory. The top of physical

memory is a maximum of 16 GB (to 3FFFFFFFFh).

DIMM memory sizes from 256 MB to 16 GB are supported, with a 64/72-bit

four-way-interleaved pathway to main memory, which is also located on the module.

Therefore, data transfers between MADPs and DIMMs are in four-way interleave

fashion. Each of the four DIMMs must be populated in a bank. The 16 slots are divided

into four banks of four slots each. They are labeled A through D.

Bank A contains DIMM sockets A1, A2, A3, and A4. Banks B, C, and D each contain 4

DIMMsocketsandarenamedinthesamefashion.Therearesilkscreensonthemodule

next to each DIMM socket to label its bank number. For the best thermal results, populate

the banks from A to D. For example, populate bank A and then bank B. For best

performance results, populate adjacent banks. For example, populate bank A and then

bank C.

Figure 3-2 shows a detailed view of the memory module slots.

Figure 3-2 Memory Module DIMM Installation Sequence