P4 CPUs typically require a socket 478 motherboard.
The P4 (Intel Pentium 4) CPU is a single-core central processing unit that came out in November 2009. Aside from a few early chips, the P4 CPU is typically installed in motherboards that support the socket 478 chip configuration. All socket 478 motherboards have a plastic processor retention mechanism that is held in place on the motherboard by four plastic push-pins, arranged as a square around the processor socket. This makes it easy to recognize a motherboard that will be compatible with your P4 CPU.
Instructions
1. Pull the socket lever end away from the socket and then raise the end of the lever up so it is perpendicular to the motherboard. The socket lever controls the sliding mechanism that holds the pins of the CPU in place and rests along the side of the socket.
2. Align the P4 CPU pins with the socket by lining up the gold arrow on the top of the CPU with the corner where the socket lever is attached to the socket. Gently lower the CPU onto the socket. It will fall into the socket correctly only one way. Do not force the CPU into the socket or you may bend the pins.
3. Hold the CPU in the socket firmly with one hand and lower the socket lever down, then secure the end of the lever under the small plastic lip to hold it, and the CPU, in place.
4. Apply a few drops of thermal compound to the center of the underside of the fan/heat sink assembly.
5. Place the fan/heat sink assembly on the CPU. The assembly is symmetrical and can be put on two ways, both of which will work. The thermal compound should form a thin, even layer between the heat sink and the CPU.
6. Secure the fan/heat sink assembly clip frame latches to the socket retention mechanisms. Make sure the fan cable is not trapped under the clip frame. There should be two loose levers on top of the fan/heat sink assembly. These levers are called clip levers.
7. Hold the fan/heat sink assembly firmly against the CPU with one hand and close the first clip lever by pressing it down against the top of the assembly. Change hands by holding the fan/heat sink assembly down on the other side and close the second lever with the other hand.
8. Verify that the fan/heat sink assembly is firmly connected to the CPU and motherboard by gripping the whole assembly and lightly pulling upward. There should be no play between the motherboard, CPU and fan/heat sink assembly. If the fan/heat sink assembly comes off or unclips, undo the levers and install the assembly again.
9. Plug the fan cable into the power plug marked "CPU FAN" on the motherboard.
Tags: heat sink, heat sink assembly, sink assembly, socket lever, assembly firmly, clip frame