•Whenonemicroprocessorisinstalled,theairbafflemustbeinstalledtoprovidepropersystemcooling.
•Donotremovethefirstmicroprocessorfromthesystemboardwhenyouinstallthesecond
microprocessor.
•Whenyouinstallthesecondmicroprocessor,youmustalsoinstalladditionalmemoryandthefourthfan.
See“Installingamemorymodule”onpage171
fordetailsabouttheinstallationsequence.
•Toensureproperserveroperationwhenyouinstallanadditionalmicroprocessor,usemicroprocessors
thathavethesameQuickPathInterconnect(QPI)linkspeed,integratedmemorycontrollerfrequency,core
frequency,powersegment,internalcachesize,andtype.
•Mixingmicroprocessorsofdifferentsteppinglevelswithinthesameservermodelissupported.
•Whenmixingmicroprocessorswithdifferentsteppinglevelswithinthesameservermodel,youdonot
havetoinstallthemicroprocessorwithloweststeppinglevelandfeaturesinmicroprocessorsocket1.
•Bothmicroprocessorvoltageregulatormodulesareintegratedonthesystemboard.
•Readthedocumentationthatcomeswiththemicroprocessortodeterminewhetheryouhavetoupdate
theserverfirmware.Todownloadthelatestlevelofserverfirmwareandothercodeupdatesforyour
server,gotohttp://www.lenovo.com/support.
•Themicroprocessorspeedsareautomaticallysetforthisserver;therefore,youdonothavetosetany
microprocessorfrequency-selectionjumpersorswitches.
•Ifthethermal-greaseprotectivecover(forexample,aplasticcaportapeliner)isremovedfromtheheat
sink,donottouchthethermalgreaseonthebottomoftheheatsinkorsetdowntheheatsink.Formore
informationaboutapplyingorworkingwiththermalgrease,see“Thermalgrease”onpage289
.
Note:Removingtheheatsinkfromthemicroprocessordestroystheevendistributionofthethermal
greaseandrequiresreplacingthethermalgrease.
•Toorderanadditionaloptionalmicroprocessor,contactyoursalesrepresentativeorreseller.
Installationtoolhastwosettingsforinstallingtwodifferentsizesofmicroprocessors.Thesettings
thataremarkedonthetoolare“L”forsmallerlowcoremicroprocessors,and“H”forlargerhighcore
microprocessors.
Installation tool
Microprocessor
Figure249.Microprocessorinstallationtools
Toreplaceamicroprocessorandheatsink,completethefollowingsteps:
Step1.Readthesafetyinformationthatbeginson“Safety”onpagevand“Installationguidelines”on
page297.
Step2.Turnofftheserverandperipheraldevicesanddisconnectthepowercordsandallexternalcables.
282LenovoSystemx3650M5InstallationandServiceGuide
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