1-3 Installing the CPU and CPU Cooler
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. (Or you may locate the notches on both sides of the CPU and alignment keys on the CPU socket.)
•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 specifications. It is not recom- mended that the system bus frequency be set beyond hardware specifications since it does not meet the standard requirements for the peripherals. If you wish to set the fre- quency beyond the standard specifications, please do so according to your hardware specifications including the CPU, graphics card, memory, hard drive, etc.
Hyper-Threading Technology System Requirements:
(Go to Intel's website for more information about the
•An Intel® CPU that supports HT Technology
•A chipset that supports HT Technology
•An operating system that is optimized for HT Technology
•A BIOS that supports HT Technology and has it enabled
(Refer to Chapter 2, "BIOS Setup," "Advanced BIOS Features," for instructions on enabling the HT Technology.)
1-3-1 Installing the CPU
A.Locate the alignment keys on the motherboard CPU socket and the notches on the CPU.
LGA775 CPU Socket
Alignment Key 
Alignment Key
Pin One Corner of the CPU Socket
LGA 775 CPU
Notch | Notch |
| Triangle Pin One Marking on the CPU |
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