Fujitsu N800 ユーザーズマニュアル

U41243-J-Z156-1-76

 109

System expansions

The system operates in two different modes depending on how many memory 
modules are installed:

–

Interleaved mode (two memory modules): The memory modules share a 
common address range. One memory responds to even-numbered cache 
lines, while the other responds to odd-numbered cache lines. This configu-
ration offers the highest performance because it allow the two modules to be 
used in a balanced fashion, reducing address conflicts.

In interleaved mode, the DIMMs must be installed in pairs (one on each 
module) and in the same locations (Jx) on each module (see figure 32 on 
page 109).

–

Single port mode (one memory module): The single memory module 
responds to all memory addresses. The DIMMs on this single carrier do not 
need to be installed in pairs.

Figure 32: Main memory module