The Q8400 is an Intel processor that uses socket 775 and operates at 2.66GHz. A processor can be overclocked by modifying options in the Basic Input Output system, or BIOS. Overclocking is when the processor is made to run at a higher speed than the manufacturer's specification. Depending on the specific Q8400 you own and the motherboard on your computer, your overclocking capability will vary.
Instructions
1. Turn you computer on and press "F2," "Esc" or "F8" to enter the BIOS, depending on your motherboard manufacturer. When your computer boots up, you will see a message that tells you what key to use to enter the setup options.
2. Use your arrow keys to navigate to the "Advanced Chipset Features" and press "Enter."
3. Go down to the "FSB & Memory Config" and press "Enter."
4. Go down to "FSB -- Memory Clock Mode," press "Enter," select "Unlinked" and press "Enter."
5. Go down to "FSB (QDR, MHz)", press "Enter" and change the value to 1600. Press "Enter" and press "Esc." Select "Save and Exit" and press "Enter" to restart your computer.
6. After Windows loads, launch the most resource-intensive software you have -- (a game or video/photo editor, for example. Play or work in that software for one or two hours to make sure the system is stable. If it is, reboot your computer and follow steps 1 to 5 and raise the FSB by 50.
7. Repeat this process until the computer crashes. When it does, repeat steps 1 to 5 and change the FSB value to the last stable value.
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