Misplaced Pages

SO-DIMM: Difference between revisions

Article snapshot taken from Wikipedia with creative commons attribution-sharealike license. Give it a read and then ask your questions in the chat. We can research this topic together.
Browse history interactively← Previous editContent deleted Content addedVisualWikitext
Revision as of 17:40, 25 June 2015 editDsimic (talk | contribs)Extended confirmed users, Pending changes reviewers, Rollbackers39,664 edits Undid revision 668637676 by Yamla (talk) There is already one reference, and I'll add more later today← Previous edit Latest revision as of 21:43, 9 May 2022 edit undo73.223.72.104 (talk) add redirect categories 
(101 intermediate revisions by 65 users not shown)
Line 1: Line 1:
#REDIRECT ]
{{More references|date=August 2014}}


{{Redirect category shell|1=
] DDR2 SO-DIMM]]
{{R with possibilities}}
]
{{R printworthy}}
]
{{R from subtopic}}
]]]
}}

An '''SO-DIMM''', '''SODIMM''', or '''small outline dual in-line memory module''', is a type of ] built using ].

SO-DIMMs are a smaller alternative to a ], being roughly half the size of regular DIMMs. SO-DIMMs are often used in systems that have limited space, such as ]s, small-footprint ]s (such as those with a ] ]), high-end upgradable office ], and ] like ]s and ] devices.<ref>{{cite web|url=https://www.synology.com/en-global/products/Synology_RAM_Module|title=Synology RAM Module|author=Synology Inc.|work=synology.com}}</ref>

== Visual identification ==
Most types of SO-DIMMs can be recognized at a glance by the distinctive notches that “key” them for different applications:{{Citation needed|date=December 2010}}
* 100-pin SO-DIMMs have two notches
* 144-pin SO-DIMMs have a single notch near the center
* 200-pin SO-DIMMs have a single notch nearer to one side. The exact location of this notch varies (read below.)
* 204-pin SO-DIMMs (]) have a single notch closer to the center than on 200-pin SO-DIMMs.
* 260-pin SO-DIMMs (]), {{convert|69.6|mm|in|abbr=in}} wide and {{convert|30|mm|in|abbr=in}} high, making them {{convert|2|mm|in|abbr=in}} wider than DDR3 SO-DIMMs, with a notch after pin 144.<ref>{{cite web
| url = http://www.micron.com/-/media/documents/products/data%20sheet/modules/sodimm/ddr4/asf18c1gx72hz.pdf
| title = DDR4 SDRAM SO-DIMM (MTA18ASF1G72HZ, 8GB) Datasheet
| date = 2014-09-10 | accessdate = 2014-11-20
| publisher = ] | format = PDF
}}</ref>
* 260-pin SO-DIMMs (]), {{convert|69.6|mm|in|abbr=in}} wide and {{convert|30|mm|in|abbr=in}} or {{convert|20|mm|in|abbr=in}} high, with the notch placed differently than on DDR3 SO-DIMMs.

=== Variants of 200-pin SO-DIMMs ===
The 200-pin SO-DIMM can be of the types DDR and DDR2. In both cases the notch is located at one fifth of the board length (20 pins + notch + 80 pins), but in DDR2 the notch is located slightly closer to the center of the board. These two types of memory are not interchangeable. The different notch locations are designed to prevent cross-installation. Keep this in mind when attempting to visually identify 200-pin SO-DIMM modules.

This variance is designed to prevent coupling of memory and controllers of different DDR generations due to electrical incompatibility. DDR SO-DIMMs operate at 2.5 Volts while DDR2 SO-DIMMs operate at 1.8 Volts.

== {{Anchor|SO-CDIMM}}General characteristics ==
200- and 204-pin SO-DIMMs are {{Convert|67.6|mm|in|abbr=in}} long and {{Convert|31.75|mm|in|abbr=in}} wide, with a maximum total depth of {{Convert|3.8|mm|in|abbr=in}}.<ref> page 26</ref>

SO-DIMMs are more or less equal in power and voltage rating to DIMMs, and despite the smaller size of memory modules, SO-DIMM technology does not mandate lower performance compared to larger DIMMs. For example, SO-DIMMs provide clock speeds such as 400&nbsp;MHz (]), ] such as 2, 2.5 and 3, and higher capacities such as 512&nbsp;MB or 1&nbsp;GB.

DDR2 SO-DIMM memory modules commonly have clock speeds from 200&nbsp;MHz up to 400&nbsp;MHz (]).{{Citation needed|date=December 2010}} 204-pin SO-DIMMs can also contain DDR3 SDRAM, with specifications such as PC3-6400, PC3-8500, PC3-10600, and PC3-12800.<ref></ref><!-- should be replaced, empty! --> 260-pin ]s may contain either DDR3 or DDR4 SDRAM, depending on their configuration. Some SO-DIMMs also provide ] functionality; ] ECC SO-DIMMs are called ''SO-CDIMMs''.<ref>{{cite web|url=http://www.rampedia.com/index.php/define-so-cdimm |title=Define-SO-CDIMM |publisher=RAMpedia |date= |accessdate=2014-08-24}}</ref>

LowHal SODIMMs are made using a low-halogen, environmentally-friendly process,<ref>{{cite web|url=http://forums.lenovo.com/t5/T400-T500-and-newer-T-series/Low-Halogen-RAM/td-p/166685 |title=Low-Halogen RAM? - Lenovo Community |publisher=Forums.lenovo.com |date=2009-10-17 |accessdate=2014-08-24}}</ref> which does not affect chip performance.

== See also ==
{{Portal|Electronics}}

{{Div col||25em}}
* ] (DIP)
* ]
* ]{{snd}} logical configuration of RAM modules (channels, ranks, banks, etc.)
* ] (RIMM)
* ] (SIMM)
* ] (SIP)
* ] (ZIP)
{{Div col end}}

== References ==
{{Reflist}}

== External links ==
{{Commons category|SO-DIMM}}

*
* (XR-DIMM form factor)

{{DRAM}}

{{DEFAULTSORT:So-Dimm}}
]

Latest revision as of 21:43, 9 May 2022

Redirect to:

This page is a redirect. The following categories are used to track and monitor this redirect:
  • With possibilities: This is a redirect from a title that potentially could be expanded into a new article or other type of associated page such as a new template. The topic described by this title may be more detailed than is currently provided on the target page or in a section of that page.
    • When the target page becomes too large, or for any reason a new page would be an improvement, this redirect may be replaced with an article, template or other project page that is carved out of the target page. See also {{R to section}} and use together with this rcat when appropriate.
    • If the topic of the redirect is not susceptible to expansion, then use other rcats such as {{R to section}} or {{R to list entry}} when appropriate.
    • Since a new page may be created, links to this redirect should not be replaced with a direct link to the target page. To make redirects to this page, use {{R avoided double redirect}}.
    • {{R printworthy}} should be used together with this template when applied to a redirect in mainspace.
    • When used on a template redirect, it will automatically populate Category:Template redirects with possibilities.
When appropriate, protection levels are automatically sensed, described and categorized.