Most people run 32-bit systems today. If you’re one of those, and your CPU is INTEL then most probably it will be “locked” unless it’s an “Extreme” chip (denoted by the letter “X” in its model number). When a CPU is locked, this means that its multiplier value cannot be set above a certain value. As you may already know:
CPUclock = FSB * CPUmultiplier
The FSB is the Front Side Bus clock provided by the motherboard. If the CPU multiplier is fixed below a certain value, then in order to increase the CPU clock we have to increase the FSB, which will have many effects on the motherboard and memory settings that we’ll have to adjust.
Before you start to change your BIOS settings, you have to make sure you can “reset you BIOS” to the default settings. This is important because your system might be unstable or the operating system might refuse to start. In such case you’ll need to reset the BIOS so your system is stable again.
