3 System upgrade
68
Upgrading the processor
The server supports up to four processors, the following models are
supported.
• Quad-core Intel Xeon processors 7300 series
• Dual-core Intel Xeon processors 7200 series

Processor configuration guidelines

Observe the following guidelines when replacing or installing a
processor.
• Use only Acer-qualified processors.
• The CPU 1 socket must always be populated. If no processor is
installed in this socket, the system will fail to boot.
• Before removing a processor, make sure to back up all important
system files.
• When installing a second, third, or fourth processor, make sure it
has same stepping and frequency specifications as the default
processor.
• Handle the processor and the heatsink carefully. Damage to either
may prevent the system from functioning properly.
•Caution! Make sure to install a processor thermal blank and a
heat sink to replace the thermal blank. Only power on a system
that has all four CPU sockets populated with heat sinks and/or
thermal blanks.

To install a new processor:

1 Perform the pre-installation instructions described on page 39.
Warning! The heat sink becomes very hot when the system
is on. NEVER touch the heat sink with any metal or with
your hands.
2 If necessary, remove the processor air baffle. Perform instructions
described in “To remove the processor air baffle” section on page
45.