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220-1201 Practice Question: A technician is tasked with selecting a CPU for a…
A technician is tasked with selecting a CPU for a small form factor (SFF) office PC that must run quietly and efficiently. Which CPU characteristic is most important for this build?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Low thermal design power (TDP)
In SFF builds, heat dissipation is limited, so a CPU with low TDP generates less heat, allowing for smaller, quieter cooling solutions. This tests understanding of how TDP impacts system design and noise levels.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
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Highest possible clock speed
Why it's wrong here
A CPU with the highest possible clock speed typically consumes more power and generates significantly more heat. This increased thermal output necessitates more robust and often louder cooling solutions, such as larger heatsinks with high-RPM fans, to prevent thermal throttling. Such aggressive cooling directly contradicts the objective of building a quiet small form factor (SFF) system, where noise reduction is a primary design goal.
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Integrated GPU
Why it's wrong here
While an integrated GPU (iGPU) can eliminate the need for a separate discrete graphics card, thereby saving physical space within a small form factor chassis, its presence does not inherently reduce the CPU's overall thermal output or acoustic profile. The heat generated by the iGPU contributes to the CPU's total thermal design power (TDP), but the primary factor for achieving quiet operation remains the CPU's overall power efficiency and heat production, irrespective of its graphical capabilities.
- ✓
Low thermal design power (TDP)
Why this is correct
Selecting a CPU with a low Thermal Design Power (TDP) is paramount for a quiet small form factor (SFF) build because it directly correlates with reduced heat generation. Less heat means the CPU requires less aggressive cooling, enabling the use of smaller, quieter heatsinks, passive cooling solutions, or low-speed, low-noise fans. This approach is fundamental to achieving minimal acoustic output while ensuring stable and reliable operation within a confined space.
- ✗
Support for overclocking
Why it's wrong here
CPUs that support overclocking are designed to operate beyond their factory-set clock speeds, which inherently leads to a substantial increase in power consumption and heat generation. To maintain stability and prevent thermal throttling during overclocked operation, these CPUs require high-performance cooling systems, often involving larger heatsinks, multiple fans, or liquid cooling solutions. Such cooling demands inevitably produce significant noise, making an overclocking-capable CPU unsuitable for a quiet SFF build.
Go deeper
Related to this question
Learn chapter
Motherboard Components and Form Factors
Key term
CPU
The Central Processing Unit (CPU) is the main electronic brain of a computer that carries out instructions from software by performing basic arithmetic, logic, control, and input/output operations.
Key term
Form factor
Form factor is the physical size, shape, and layout of a hardware component that determines how it fits and connects inside a computer or device.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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