Sun Microsystems, Inc.
Figure 2-1: Sun Fire X4600 CPU Module
Systems configured with four or six processors require filler modules. The filler modules maintain the
HyperTransport connectivity between all CPUs and provide airflow redirection for efficient cooling throughout
the system. Figure 2-2 illustrates the placement of CPU and filler modules, physical slot numbering, and the
CPU enumeration from the BIOS perspective.
Front of Server
Slot A Slot B Slot C Slot D Slot E Slot F Slot G Slot H
8
Processors
Module 0 Module 2 Module 1 Module 3 Module 4 Module 5 Module 6 Module 7
6
Processors
Module 0 Module 1 Filler Module 2 Module 3 Module 4 Filler Module 5
4
Processors
Module 0 Filler Filler Module 1 Module 2 Filler Filler Module 3
2
Processors
Module 0 Module 1 EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY
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