Pizza box form factor

Pizza box form factor

In computing, a pizza box is a style of case for computers. They tend to be very thin, normally one or two rack units (1U or 2U) in height, making them wide and flat. The result is a case that looks like boxes used to deliver pizza.

The first computers generally referred to as pizza box machines were Sun Microsystems desktop workstations sold in the late 1980s, most notably the SPARCstation 1. Other famous examples include the SGI Indy, the NeXTstation, Macintosh LC, and Amiga 1000.

The original SPARCstation 1 design included an expansion bus technology, SBus, expressly designed for the form factor; expansion cards were small, especially in comparison to other expansion cards in use at the time such as VMEbus, and were mounted horizontally instead of vertically. PC compatible computers in this type of case typically use the PCI expansion bus and require special low profile expansion cards, shorter than the PCI cards used in regular PCs. [cite web
url =
title = Low-Profile PCI
accessdate = 2008-02-17
date =
work = PCI-SIG Frequently Asked Questions
publisher = PCI-SIG

The density of computing power and stackability of pizza box systems also made them attractive for use in data centers. Systems originally designed for desktop use were placed on shelves inside of 19-inch racks, sometimes requiring that part of the case be cut off in order for them to fit. Servers in this form factor are now designed for rack mounting.

The pizza box style has mostly fallen from use for desktop computing, as concerns such as cooling and expansion capabilities have made tower and minitower designs the de facto standard. Taller versions of the pizza box design exist, but these are usually known as "desktop cases"; they have roughly the same dimensions as a mini tower, but are designed to lay flat on a desk.


External links

* [ Pizza box] in the Jargon File
* [ of a Sun Ultra 1] with a "pizza box" case

Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Pizza box — Saltar a navegación, búsqueda SPARCstation 1+ …   Wikipedia Español

  • Small form factor — (SFF) computers are housed in smaller cases than typical desktop computers. While the term has no exact definition, it generally includes cases designed for motherboards smaller than the standard ATX form factor. It generally excludes rack mount… …   Wikipedia

  • Pizza delivery — is a service in which a pizzeria delivers a pizza, usually ordered by telephone or Internet, to a customer. Delivery charges are commonly applied to such purchases.HistoryIn the United States, modern pizza delivery began after World War II, when… …   Wikipedia

  • Джобс, Стив — Стив Джобс Steve Jobs …   Википедия

  • Desktop — refers to the surface of a desk. The term has been adopted as an adjective to distinguish office appliances (such as photocopiers and printers) which can be fitted on top of a desk, from larger equipment covering its own area on the floor.… …   Wikipedia

  • SPARCstation 10 — The SPARCstation 10 (codenamed Campus 2 ) is a workstation computer made by Sun Microsystems. Announced in May 1992, it was Sun s first desktop multiprocessor (being housed in a pizza box form factor case). It was later replaced with the… …   Wikipedia

  • List of United States Marine Corps acronyms and expressions — This is a list of acronyms, expressions, euphemisms, jargon, military slang, and sayings in common or formerly common use in the United States Marine Corps. Many of the words or phrases have varying levels of acceptance among different units or… …   Wikipedia

  • Computer case — A stripped ATX desktop case. The motherboard will lie flat on the bottom, against the right panel, with peripheral connectors protruding through the rear panel, drive bays at the top and front, and the power supply at the top and rear. A computer …   Wikipedia

  • Personal computer — This article is about personal computers in general. For computers generally referred to as PCs , see IBM PC compatible. For hardware components dealing with personal computers, see Personal computer hardware. Personal computer An illustration of …   Wikipedia

  • Laptop — A desktop replacement laptop with its 18.4 inch screen showing its technical specifications. A laptop, also called a notebook,[1][2] is a personal computer for …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.