http://debianws.lexgopc.com/wiki143/index.php?action=history&feed=atom&title=Engineering_sampleEngineering sample - Revision history2026-10-25T21:04:40ZRevision history for this page on the wikiMediaWiki 1.43.1http://debianws.lexgopc.com/wiki143/index.php?title=Engineering_sample&diff=7365467&oldid=previmported>Osmarks: Reapply reference fixes/new paragraph from 1283577209 but keep Pentium 4/Core 2 paragraph2025-05-19T12:00:54Z<p>Reapply reference fixes/new paragraph from 1283577209 but keep Pentium 4/Core 2 paragraph</p>
<p><b>New page</b></p><div>{{Short description|Integrated circuit prototypes for testing}}<br />
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[[File:KL Intel Xeon Prestonia ES.jpg|thumb|upright|An Intel [[Xeon#Prestonia|Xeon "Prestonia"]] engineering sample]]<br />
[[File:KL AMD Mobile Athlon XP ES.jpg|thumb|upright|An AMD Mobile [[Athlon#Mobile Athlon XP|Athlon XP]] engineering sample]]<br />
'''Engineering samples''' are the [[beta version]]s of [[integrated circuit]]s which are loaned to [[Original Device Manufacturer|ODMs]], [[Original Equipment Manufacturer|OEMs]] and [[Independent software vendor|ISVs]] so that products can be tested prior to launch. Engineering samples are usually handed out under a [[non-disclosure agreement]] or another type of confidentiality agreement.<ref>{{cite web |archive-url=https://web.archive.org/web/20120608045725/http://www.intel.com/support/processors/sb/CS-030747.htm |url=http://www.intel.com/support/processors/sb/CS-030747.htm |title=Information about Intel Engineering/Qualification Sample Processors |archive-date=2012-06-08}}</ref><br />
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Several kinds of preproduction samples are made during a product's development, ranging from mechanical samples (for testing physical fit of a processor), electrical/thermal samples (for testing cooling and power draw), engineering samples (for early testing of a design) and qualification samples (made to test whether a design is ready for release). Some engineering samples with unlocked clock multipliers are valued by overclockers.<ref>{{cite web |title=A Sampling of Sample Processors |url=https://www.cpushack.com/2018/07/23/a-sampling-of-sample-processors/ |website=The CPUShack Museum |access-date=2 April 2025}}</ref> Intel does not officially acknowledge a distinction between engineering and qualification samples.<ref>{{cite web |title=What Is the Difference between ES (Engineering Sample) and QS (Qualification Sample) Processors? |url=https://www.intel.com/content/www/us/en/support/articles/000056642/processors/intel-core-processors.html |website=Intel Support Knowledge Base |access-date=2 April 2025}}</ref><br />
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Some engineering samples, such as [[Pentium 4]] processors, were rare and favoured{{Citation needed|date=July 2018}} for having unlocked base-clock multipliers. More recently{{When|date=July 2018}}, [[Core 2]] engineering samples have become more common and popular.{{Citation needed|date=July 2018}} Asian sellers were selling the Core 2 processors at major profit.{{Citation needed|date=July 2018}} <br />
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While engineering sample CPUs do occasionally appear on secondhand markets such as [[eBay]], they are generally not authorized for resale and can suffer from unpredictable performance issues, compatibility issues, and lack of warranty support options.<ref>{{Cite web |title=Signs an Intel CPU May Be an Engineering Sample {{!}} tweedge's blog |url=https://chris.partridge.tech/2021/identifying-intel-engineering-samples/ |access-date=2024-09-08 |website=chris.partridge.tech}}</ref><ref>{{Cite web |date=2012-01-04 |title=Engineers arrested for selling sample CPUs on eBay |url=https://www.techspot.com/news/46902-engineers-arrested-for-selling-sample-cpus-on-ebay.html |access-date=2024-12-17 |website=TechSpot |language=en-US}}</ref><ref>{{cite web |title=Why You Should AVOID Intel Core 2 Engineering Samples Rev. 4.1 |url=https://archive.techarp.com/showarticleba80.html?artno=407&pgno=4 |website=Tech ARP |access-date=2 April 2025}}</ref> This is due to their unfinished nature compared to the retail version of the chip.<br />
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==References==<br />
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==See also==<br />
{{commons}}<br />
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[[Category:Integrated circuits]]<br />
[[Category:Computer hardware]]</div>imported>Osmarks