These days, a desktop PC can be defined as any kind of computer that doesn’t have a battery. It’s not meant to be moved, and it can’t be used on the go. Outside of that definition, desktop computers can range from tiny to massive, and they could even include PCs with built-in displays, which are called “all-in-one” computers. Here’s a breakdown of the options:
Full tower: The biggest desktop PC size, most commonly for high-end gaming machines. There’s no standardized measurement, but they are typically over 22 inches tall and deep. Most importantly, they are large enough internally to support E-ATX motherboards and more extensive cooling setups.
Mid tower: These days, this is the most common desktop PC size. Whether for gaming or work, it’s the size with the most versatility, with enough room to get some decent performance while still allowing for easily upgradable parts. Most PCs you buy will use a mid-tower case.
Small form factor (SFF): This size has grown in popularity in the DIY space, but it’s still uncommon in prebuilt PCs, though you’ll find some options out there, such as the Corsair One or some of the options listed below. These cases exclusively use smaller Mini-ITX motherboards, designed to fit into these miniature cases, while still allowing you to get in and upgrade parts.
Mini PC: These are the smallest PCs you can buy. They aren’t designed to be upgraded yourself, relying on laptop components to fit into such a small package. They’re sometimes used in living rooms or server rooms due to their size.
All-in-one: These are desktop PCs that include the entire package all in one, including the display. Typically, they use laptop components packed into either the display or the base of the computer.
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