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B-6 SPARC Enterprise M8000/M9000 Servers Service Manual • June 2010
■ A dedicated LSI for CPU is mounted.
■ One CPU chip is mounted on a CPU module. In case of SPARC 64 VI processor,
one CPU chip has two CPU cores, each of which has two threads. This means four
threads per CPU module.
In case of SPARC 64 VII processor, one CPU chip has four CPU cores, each of
which has two threads. This means eight threads per CPU module.
A thread is a component of a CPU that can execute threads. When viewed from
Solaris OS, one thread is seen as one CPU.
■ The performance difference between four types of CPU module is as follows.
■ In case of SPARC64 VI processor:
2.28 GHz, L2 cache 5M bytes/2.4 GHz, L2 cache 6M bytes
■ In case of SPARC64 VII processor:
2.52 GHz, L2 cache 6M bytes/2.88 GHz, L2 cache 6M bytes
■ For the bus connecting CPU and SC, a high-speed link is used.
■ The CPU module has a label bearing the printed component number and
manufacture's serial number.