IBM Flex System x440 Compute Node Installation And Service Manual page 556

1x CPU (Normal config)
Socket 3
Socket 4
1x CPU (Socket 1 failure)
Socket 3
Socket 4
Figure 2. Supported one CPU configuration
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IBM Flex System x440 Compute Node Types 7917 and 2584: Installation and Service Guide
Mezz 1
Socket 1
Mezz 2
CPU
0
DMI
SW
Socket 2
Mezz 3
Mezz 4
Mezz 1
Socket 1
Mezz 2
Bad or
nopop
DMI
SW
Socket 2
CPU
0 Mezz 3
Mezz 4
PCH
PCH