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Shop computer parts, video cards, PC components, sound cards, computer cases, computer components at Best Buy.

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.

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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