Note: Pentium III Xeon 550 MHz, 700 MHz, and 900 MHz processors cannot be mixed in the same server. They all have to be of the same speed.
Pentium III Xeon X900-2MB Processor Option Kit Note: This is to upgrade a 700 MHz server only! For customers to upgrade from 550 MHz to 900 MHz, please use the ProLiant 8000 Pentium III Xeon 550 MHz to 900 MHz Processor Upgrade Kit (PN 231092-B21). Note: This processor option kit (PN 177666-B21) supports the ProLiant ML750, ProLiant DL760, ProLiant 8500, and the ProLiant 8000 servers.