Server Subsystems Overview
Four-CPU Configuration
In addition to four CPUs, this configuration requires eight memory riser cards. The following
illustration shows the components in a four-CPU server configuration.
Callout
Description
Callout
Description
1
Memory riser card P3/MR1
7
Memory riser card P0/MR1
2
Memory riser card P3/MR0
8
Memory riser card P0/MR0
3
Memory riser card P2/MR1
9
CPU P3
4
Memory riser card P2/MR0
10
CPU P2
5
Memory riser card P1/MR1
11
CPU P1
6
Memory riser card P1/MR0
12
CPU P0
The four-CPU configuration offers a greater level of resiliency with redundant QPI
interconnects that allow working CPUs to route around a disabled CPU as the system starts.
“Four-CPU Block Diagram” on page 22
.
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Oracle Server X5-4 Service Manual • December 2015
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