6
IBM
Eserver
xSeries 455 Planning and Installation Guide
1.3 System assembly
The x455 has a similar internal design to the x450. The midplane board (viewed
from the front) interfaces with three major assemblies:
The processor-board assembly
This is located to the right of the midplane board and under the
memory-board assembly. It houses the Itanium 2 processors, Cache and
Scalability Controller, and the 64 MB of Xcel4 cache.
The memory-board assembly
This is located to the right of the midplane board and above the
processor-board assembly. It houses the memory and memory controller.
The PCI-X board assembly
This is located to the left of the midplane board. It houses all the PCI-X slots
and all other I/O components.
Summary of Contents for 88553RX
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