Many modern motherboards with integrated software configuration no longer require you to do anything prior to assembly. That means that you type your processor parameters directly in BIOS (Basic Input Output System). Most of the time, you access the BIOS menu by pressing the DEL key, F2 or F10, shortly after switching on the PC. Check your handbook to find out which key to use. The latest technology even recognizes the CPU automatically, a feature that is particularly useful for beginners. But making settings manually is still a must for anyone who wants to fine-tune his or her system.
Processor Settings: FSB And Multiplier
The external clock speed is usually referred to as the Front Side Bus (FSB), or system clock. Typical physical frequencies for system clocks are 100.00 and 133.33 MHz. The actual processor clock is calculated by multiplying the system clock with the multiplier. For example, a Front Side Bus of 133.33 MHz and multiplier of 13 results in a physical CPU clock speed of 1733 MHz. Some manufacturers provide "marketing" figures when Double Data Rate (DDR) or quad pumping raises effective bandwidth.
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