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C-4 SPARC Enterprise M4000/M5000 Servers Service Manual • August 2009
C.2.2 CPU Module
TABLE C-2 lists the maximum number of CPU modules that can be installed in the
system, their locations, and how the CPU modules must be serviced. Each CPU
module contains two SPARC 64 VI or SPARC 64 VII processor chips. Each processor
chip incorporates and implements the following:
■ Chip multithreading (CMT) design that sequentially executes the multiple
processes on the CPU.
■ Dual core processors per CPU module (with four CPU modules there are eight
processors and 16 cores).
■ Quad core processors per CPU module (with four CPU modules there are eight
processors and 32 cores).
■ SPARC Instruction Set Architecture (ISA).
■ Visual Instruction Set (VIS) extension, which accelerates multimedia, networking,
encryption, and Java™ processing.
Refer to “CPU Module Replacement” on page 12-1 for replacement procedures.
TABLE C-2 CPU Module Features
SPARC
Enterprise
M4000 Server
SPARC64 VI
SPARC
Enterprise
M4000 Server
SPARC64 VII
SPARC
Enterprise
M5000 Server
SPARC64 VI
SPARC
Enterprise
M5000 Server
SPARC64 VII
Maximum number of CPU modules
22 4 4
Maximum number of CPUs per
server
44 8 8
Number of cores per CPU
2 4 2 4
CPU module location
Top of server Top of server Top of server Top of server
Active replacement capability
No No No No
Hot replacement capability
No No No No
Cold replacement capability
Yes Yes Yes Yes