Mini PC (Desktop Computers)

Volume is the defining number for a Mini PC: 0.5 to 2 liters, small enough to sit under a monitor stand or clip to a 100 by 100 mm mount on the back of a screen. Inside sits a mobile processor of 15 to 65 watts with built in graphics, one or two SODIMM memory slots, one or two M.2 drives and a single small fan. Power arrives through an external brick of 65 to 150 watts. There is no space for a graphics card and no plan to add one.

A Small Form Factor PC occupies roughly ten times the volume and does take a full graphics card. An All-in-One Desktop bundles a screen into the deal at the cost of separating them later. A Tower Desktop offers everything the mini gives up and needs floor space to do it. Against a laptop with a dock, the mini costs less for the same processor and stays cool at your desk, but it stays at your desk.

Browsing, office documents, spreadsheets, video calls, streaming, coding and digital signage all run comfortably here. 10 to 25 watts of typical draw makes it the cheapest shape to leave switched on. It works well as a second machine, as a small home server, and in rooms where the computer must be invisible. Steer clear if you play current games at high settings, run multi-hour renders, or need more than two internal drives. Sustained speed lands at roughly half to two thirds of a full desktop chip.

Cooling decides which model you will still like in year two. One small fan spinning at 3,000 rpm or more produces a high pitched whine that carries further than the deeper note of a 120 mm fan, so look for measured noise figures rather than a quiet claim. Confirm the memory is socketed instead of soldered, since that is the difference between a five year machine and a three year one. Count video outputs, check how many displays each can drive at what resolution. Note whether the fast ports run 5, 10, 20 or 40 Gbps.

Never shut one inside a closed cabinet or a drawer; the intake grille is a few square centimeters and it needs open air on at least three sides. Vacuum that grille every three months, because a thin layer of dust here costs more temperature than the same layer in a tower. Stand it on a hard surface rather than fabric. Many ship with a single drive, so keep an external backup, and install firmware updates, which on these machines often fix fan behavior and display output faults.