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Pentium 4 Overclocking Adventure

By: Tio Chaharbaghi | Intel CPUs in CPUs, Chipsets & SoCs | Posted: Feb 17, 2003 5:00 am

Overclocking the CPU


Overclocking is a great hobby, but we should always note it can be dangerous. You are taking your CPU or any other device you are overclocking past its official rating. By doing so you are voiding your warranty.


When overclocking, you usually will be using your BIOS to do it, but if you have an older motherboard, it might consist of dip switches or jumpers. Most BIOS's have general overclocking options but every motherboard varies to a certain degree. In our case, we have all of our options in the BIOS, so we do not need to open our case to adjust settings - phew!


One of the main differences between overclocking an AMD system and a Pentium 4 system is the use of multipliers. The multipliers on an AMD can be unlocked with modification, while the Pentium 4 multipliers cannot be unlocked.


We will now move on to showing you a screenshot of the BIOS settings for overclocking we have available on our Albatron PX845PE Pro II.



At the top of the screen you can see the CPU speed that you have set it at. At the time of that screenshot, we have everything running at stock.


Below that, you can select the CPU voltage. This determines how much voltage is outputted to the CPU. When reaching higher overclocking speeds, you would raise this voltage to increase stability, since the higher clocked CPU might need more juice to function. However, the catch is the higher you raise your CPU voltage, the hotter the processor operates at.


CPU Host frequency is your FSB control. The Albatron PX845PE Pro 2 will allow jumps in 1MHz increments all the way to 240MHz (which probably will not be attainable anyway). With this setting, we will be able to increase the clock speed of our CPU. The FSB is multiplied by the multiplier, which in this case is 18, to provide our final clock speed.


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