Gigabyte GA-990FX - Installing the CPU; Installing the Memory

Please visit GIGABYTE's website for details on hardware installation.
1-3 Installing the CPU
ReadthefollowingguidelinesbeforeyoubegintoinstalltheCPU:
• Make sure that the motherboard supports the CPU.
(Go to GIGABYTE's website for the latest CPU support list.)
• Always turn off the computer and unplug the power cord from the power outlet before installing the
CPU to prevent hardware damage.
• Locate the pin one of the CPU. The CPU cannot be inserted if oriented incorrectly.
• Apply an even and thin layer of thermal grease on the surface of the CPU.
• DonotturnonthecomputeriftheCPUcoolerisnotinstalled,otherwiseoverheatinganddamage
of the CPU may occur.
• SettheCPUhostfrequencyinaccordancewiththeCPUspecications.Itisnotrecommended
thatthesystembusfrequencybesetbeyondhardwarespecicationssinceitdoesnotmeetthe
standard requirements for the peripherals. If you wish to set the frequency beyond the standard
specications,pleasedosoaccordingtoyourhardwarespecicationsincludingtheCPU,graphics
card, memory, hard drive, etc.
Installing the CPU
Locate the pin one (denoted by a small triangle) of the CPU socket and the CPU.
1-4 Installing the Memory
DualChannelMemoryConguration
Thismotherboard provides fourDDR3 memory socketsand supports Dual ChannelTechnology.After the
memoryisinstalled,theBIOSwillautomaticallydetectthespecicationsandcapacityofthememory.Enabling
DualChannelmemorymodewilldoubletheoriginalmemorybandwidth.
ThefourDDR3memorysocketsaredividedintotwochannelsandeachchannelhastwomemorysocketsas
following:
Channel0:DDR3_2,DDR3_4
Channel1:DDR3_1,DDR3_3
Readthefollowingguidelinesbeforeyoubegintoinstallthememory:
• Make sure that the motherboard supports the memory. It is recommended that memory of the
same capacity, brand, speed, and chips be used.
(Go to GIGABYTE's website for the latest supported memory speeds and memory modules.)
• Always turn off the computer and unplug the power cord from the power outlet before installing the
memory to prevent hardware damage.
• Memory modules have a foolproof design. A memory module can be installed in only one direction.
If you are unable to insert the memory, switch the direction.
AM3+ Socket
A Small Triangle
MarkingDenotesPin
One of the Socket
AM3+/AM3 CPU
A Small Triangle
MarkingDenotesCPU
Pin One
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