Find the ideal desktop case, power supply unit or PSU, drive enclosures and trays, system cables and more. Whether you are building a high end gaming PC from scratch or revamping one you …

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The six essential parts you'll need for a working PC are the case, motherboard, processor, RAM, hard drive, and power supply unit. A computer case is an enclosure for all the other components.

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CDW sells PC components and parts including CPUs, GPUs, PSUs, RAM, SSD, HDD and PC cooling systems. Shop now and build your own PC.

Upgrade your computer with parts from Staples. Shop computer processors or hard drives to boost performance or increase storage. Free next-day delivery when you spend $35 minimum.

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