CPU Installation (socket 478/370)
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It is a always better to install the CPU before the motherboard is put in the case.
Now, locate the processor socket on your motherboard.
I am installing an Intel PIII processor on a socket 370 as shown on the image on the left. The installation would be slightly different if you have a different processor i.e. PIII CPU, Celeron CPU/370; P4 CPU/478 socket; AMD Anthon CPU/Socket A etc.
Raise the brown lever on the socket and slowly put the processor in place. Do not forec the CPU in it. Just slide in easily. You have to make sure the pin 1 of your CPU goes into the pin 1 of your CPU socket otherwise the CPU would not get into the socket. Remember don't try to force it in. It will go in gently if you fit it correctly. Now close the brown lever which will securely hold the CPU in place.
If you bought a retail boxed CPU it would include a heatsink + fan. If you bought an OEM CPU make sure you got a fan that is correct for the speed of your CPU, otherwise your CPU will overheat and behave abnormally or could be damaged. Take off the plastic cover from the bottom of the CPU fan that covers the heat transfer pad. Now place the CPU fan on top the CPU and push down the metal clips on the fan so that it clips onto the CPU socket.
CPU fan has a power connector which needs to be connected to CPU fan power socket on your motherboard as shown on the image.
Finally, you have to specify what frequency (speed) your CPU is running at. This can be done using jumper settings, or on some modern motherboard it can be done in the BIOS, or your motherboard may have automatic detection for your CPU frequency. Please refer to your motherboard manual for more details. The motherboard I am using (Abit BX133) has a dip-stick jumper setting and it can be setup in the BIOS. I have left the jumper setting to default as I will use the BIOS to specify the CPU frequency. The CPU runs at the bus speed of 133Mhz therefore I will use the settings 133 * 6.5(multiplier) under the BIOS, which will the run the CPU at 866Mhz.
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