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A CPU (Central Processing Unit) is the primary processor of a computer — often called the “brain” of the machine. It executes instructions from programs, manages system operations, and coordinates every other component.

CPU vs Other Components

ComponentRole
CPUGeneral computing — runs your OS, apps, and logic
GPUGraphics rendering — gaming, video, 3D work
RAMShort-term memory — data the CPU is actively using
SSD/HDDLong-term storage — files, apps, OS

Used CPU Combo Prices in Singapore (April 2026)

BundleSourcePrice (SGD)
Ryzen 5 5600 + B550M + 16GB DDR4Carousell~$280–$320
Ryzen 9 5900X + B550M + 24GB DDR4Carousell~$450
i5-14400F + B660M + 32GB DDR4Carousell~$650

Related Glossary Terms

What is a GPU? →
What is RAM? →
What is Thermal Paste? →
What is Thermal Throttling? →

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