User Guide

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.