Acer R910 Series manual Processor, Removing a CPU, CPU upgrading guidelines

62 3 System upgrade

Processor

The server supports up to four processors, the following models are supported:

•dual-core Intel Xeon processor 7000 sequence

•64-bit Intel Xeon processor MP with 1 MB L2 cache

CPU upgrading guidelines

When installing CPUs the following must be observed:

•Use only Acer-qualified CPUs.

•Each CPU socket include a CPU and heat sink combination.

•CPUs should have identical FSB, cache, and speed.

•CPUs must be installed in sequential order beginning with the CPU_1 socket.

•If you are installing an additional CPU, read the information on “Processor core VRM requirements” on page 66 to determine if you need to add any VRMs and follow the instructions listed on the requirements.

•If you are removing a CPU, but not installing replacement processor, read the information on “Processor core VRM requirements” on page 66 to determine if you need to remove any VRMs and follow the instructions listed on the requirements.

Removing a CPU

The system may have from one to four CPUs installed on the mainboard. If you are replacing a CPU on the system, the heat sink must be removed.

Important: Before removing a CPU from the mainboard, make sure to create a backup file of all important data.

1Observe the ESD precautions and pre-installation instructions described on page 33.

Warning! The heat sink becomes very hot when the system is on. NEVER touch the heat sink with any metal or with your hands.