Sun Microsystems V40z User Manual

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4-8
 
Sun Fire V20z and Sun Fire V40z Servers—User Guide • March 2005
 
4.4.2
No Mixing of CPU Stepping Versions 
 
Two different versions of the Sun Fire V40z server have been released with CPUs of 
different stepping versions. 
If you order an CPU X-option to add or replace a CPU in your server, do not mix 
CPUs of different stepping versions. 
 
Caution – 
 
A new heatsink ships for the stepping version “E” CPU. Ensure that you 
 
do not use an old heatsink on a stepping version “E” CPU. 
Before ordering a new or replacement CPU, verify the stepping version of your 
CPU(s) and then order the same stepping version. 
Due to the power requirements and height restrictions, the stepping version “E” 
CPUs work only in the Sun Fire V40z server release PN 380-1206. 
In a two- or four-CPU configuration of the Sun Fire V40z server, all CPUs must be 
the same stepping version and the same speed. 
 
4.4.2.1
Verifying the Stepping Version of the CPU 
 
You can verify the stepping version of the CPU in a local server or on a remote 
server.