📖 What is PGA (Pin Grid Array)?
PGA (Pin Grid Array) is a CPU socket design where the pins are located on the bottom of the processor and fit into holes in the motherboard socket. This architecture is traditionally associated with AMD processors and requires careful handling during installation.
"When removing a PGA processor, ensure it is fully released from the locking mechanism to avoid bending the pins on the CPU."
📚 Certification: CompTIA A+ Certification Exam Core 1 (220-1101)
🔑 What are the Key Concepts of PGA (Pin Grid Array)?
- ▸ Pins are located on the underside of the CPU, which then plug into a corresponding socket on the motherboard for electrical connectivity.
- ▸ PGA processors typically utilize Zero Insertion Force (ZIF) sockets, allowing the CPU to be seated without pressure before the locking lever is engaged.
- ▸ The physical pins on the processor are highly fragile and susceptible to bending or breaking if the CPU is dropped or misaligned.
- ▸ Historically associated with AMD processors, this design contrasts with Land Grid Array (LGA), where the pins are located on the motherboard socket instead.
- ▸ Correct alignment using the gold triangle marker is essential to ensure pins enter the socket holes without resistance or permanent physical damage.
🎯 How does PGA (Pin Grid Array) appear on the 220-1101 Exam?
You may be asked to identify a CPU socket type based on a description of pins located on the processor itself rather than the motherboard. You must recognize this as PGA and understand the associated installation risks.
A scenario might describe a technician who accidentally bent several pins on the bottom of a CPU during installation. You will be expected to identify this as a PGA processor and evaluate the hardware damage.
❓ Frequently Asked Questions
What is the primary difference between PGA and LGA in terms of damage?
In PGA, damaged pins mean the CPU is likely ruined. In LGA, the pins are on the motherboard, meaning a bent pin usually requires replacing the entire motherboard rather than just the processor.
Why is the ZIF mechanism important for PGA CPUs?
ZIF (Zero Insertion Force) prevents the technician from applying downward pressure, which would bend the fragile pins. The CPU drops in freely, and the lever provides the necessary locking force.