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A desktop computer is a personal computer designed for use at a single location due to its size and power requirements, usually by one person. The most common configuration has a case that houses the power supply, motherboard, disk storage (usually one or more hard disk drives and optical disc drives); a keyboard and mouse for input; and computer monitor and printer for output. The case may be oriented horizontally and placed atop a desk or vertically and placed underneath or beside a desk.
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I have five small form factor PCs at home right now and am working on changing them into different types of computer cases for different applications. Small Form Factor (SFF) computers are also ideal for Point of Sale (POS) systems in niteclubs, restaurants, automotive service stations and other business areas where a less imposing, possibly low-power comsumption system might be desired.
Many SFF computers are "fanless" and cool the internal Central Processing Unit (CPU) by ordinary thermal convection (heat rising), so careful attention should be paid to observing where the ventilation holes are placed on the casing; so the flow of rising heated air is not obstructed from leaving the case.
Finally, with the proper mounting options a SFF computer might even be sutiable for use in a mobile application such as a food service vehicle, mobile pet grooming business, etc. The five systems I have were recycled after serving previous duty as hospital staff workstations where the nurses and doctors would access and review patient admittance records and status charts (presumably).
Key SFF features:
* Low space utilization
* Low noise
* Lower heat (although perhaps not the lowest)
* Lower power consumption (possibly important when staffing a Call Center with 100 computers)
* Limited upgrade options (in scenarios where it is undesirable for USERS to open the case and install extra upgrade cards; possible security issues)
The per unit cost to deploy a Small Form Factor computer should also be less except when very specific performance upgrade features (faster CPUs, better video, better audio, additional hardware-card based options) are requested.