View source for WTX (form factor)

{{Short description|Motherboard form factor specification}}
{{no footnotes|date=September 2012}}

[[File:Atxscale.svg|thumb|ATX motherboard size comparison; rear is on left.
{{legend|#ff8080|[[FlexATX]] {{nowrap|({{convert|9|xx|7.5|in|mm|0|disp=output only|abbr=on}})}}}}
{{legend|#ffb380|[[microATX]] {{nowrap|({{convert|9.6|xx|9.6|in|mm|0|disp=output only|abbr=on}})}}}}
{{legend|#ffe680|[[Mini ATX]] {{nowrap|({{convert|11.2|xx|8.2|in|mm|0|disp=output only|abbr=on}})}}}}
{{legend|#8dd35f|[[ATX|Standard ATX]] {{nowrap|({{convert|12|xx|9.6|in|mm|0|disp=output only|abbr=on}})}}}}
{{legend|#5599ff|Extended ATX (EATX) {{nowrap|({{convert|12|xx|13|in|mm|0|disp=output only|abbr=on}})}}}}
{{legend|#e580ff|WTX {{nowrap|({{convert|14|xx|16.75|in|mm|0|disp=output only|abbr=on}})}}}}
]]

'''WTX''' (for '''Workstation Technology Extended'''{{citation needed|date=May 2016}}) was a [[motherboard]] [[Computer form factor|form factor]] specification introduced by [[Intel]] at the [[Intel Developer Forum|IDF]] in September 1998, for its use at high-end, multiprocessor, multiple-hard-disk [[Server (computing)|servers]] and [[Workstation (computer hardware)|workstations]]. The specification had support from major OEMs (Compaq, Dell, Fujitsu, Gateway, Hewlett-Packard, IBM, Intergraph, NEC, Siemens Nixdorf, and UMAX) and motherboard manufacturers (Acer, Asus, Supermicro and Tyan) and was updated (1.1) in February 1999. {{As of|2008}}, the specification has been discontinued and the URL www.wtx.org no longer hosts a website and has not been owned by Intel since at least 2004.

This form factor was geared specifically towards the needs of high-end systems, and included specifications for a WTX [[power supply unit]] (PSU) using two WTX-specific 24-pin and 22-pin [[Molex]] connectors.

The WTX specification was created to standardize a new [[motherboard]] and chassis [[Computer form factor|form factor]], fix the relative [[central processing unit|processor]] location, and allow for high volume airflow through a portion of the chassis where the processors are positioned. This allowed for standard form factor motherboards and chassis to be used to integrate processors with more demanding thermal management requirements.

Bigger than [[ATX]], maximum WTX motherboard size was {{convert|14|xx|16.75|in|mm|0|abbr=on}}. This was intended to provide more room in order to accommodate higher numbers of integrated components. 

WTX computer cases were backwards compatible with ATX motherboards (but not vice versa), and sometimes came equipped with ATX power supplies.

== See also ==
* [[eATX]]: a version of ATX which has a form factor of {{convert|12|xx|13|in|mm|1|disp=flip|abbr=on}}.
* [[SWTX]]: Server Workstation Technology Extended

== External links ==
* [http://www.casereview.org/wtx/WTX-Spec-11.pdf  Intel's 1998 WTX case definition]
* [http://www.pcguide.com/ref/case/formWTX-c.html WTX Form Factor definition]
* [http://www.hardwarebook.info/Category:Connector#Power_Supply WTX Power Supply connectors]

{{Computer form factors}}
[[Category:IBM PC compatibles]]
[[Category:Motherboard form factors]]


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