The Pentium 4 520 is a 2.8ghz processor that is reasonable quick, but pales in comparison to today's standard. Upgrading this chip can be accomplished by replacing it with another socket 775 CPU. This is necessary as the computer processor on a motherboard is only designed to accept a single socket type. Thus, your upgraded chip must also utilize the socket 775 standard.
Instructions
1. Turn off the computer and unplug it from the wall.
2. Remove the two screws on the right-rear of the case and slide off the case panel.
3. Unhinge the two metal handles on either side of the processor heatsink and lift the heatsink off of the processor.
4. Release the small metal handle at the top of the processor slot and pull out the old Pentium 4 520 chip.
5. Insert in the new chip and lock it into position by moving the metal handle back into position.
6. Follow the directions that came with your upgraded processor to install the heatsink.
7. Connect the heatsink fan cable to the fan port on the motherboard.
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