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Monday, 9 July 2018

Comparison of memory cards

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File:Memory-card-comparison.jpg - Wikimedia Commons
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This table provides summary of comparison of various flash memory cards, as of 2017.


Video Comparison of memory cards



Common information

unless otherwise indicated, all images to scale

Maps Comparison of memory cards



Physical details

Note that a memory card's dimensions are determined while holding the card with contact pins upwards. The length of cards is often greater than their width. Most cards show a directional arrow to aid insertion; such an arrow should be upward.


SD Flash Memory Cards stock image. Image of assortment - 7684083
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Speed comparison


The Ultimate Micro SD Card Comparison - YouTube
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Technical details


Canon 6D Fastest SD Card Write Speed Tests and Memory Card ...
src: www.cameramemoryspeed.com


Consumer details


Samsung EVO+ 32GB Vs Sandisk Ultra 32GB Class 10 Micro SD Card ...
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Compatibility

The following chart gives details on availability of adapters to put a given card (horizontal) in a given slot or device (vertical). This table does not take into account protocol issues in communicating with the device.

Following labels are used:

  • + (native) - A slot is native for such card.
  • D (Directly compatible) - A card may be used in such a slot directly, without any adapters. Best possible compatibility.
  • M (requires a Mechanical adapter) - Such adapter is only a physical enclosure to fit one card sized into another; all electrical pins are exactly the same.
  • EM (requires an Electro-Mechanical adapter) - Such adapter features both physical enclosure and pins re-routing as terminals are sufficiently different. No powered elements in such adapter exists, thus they're very cheap and easy to manufacture and may be supplied as a bonus for every such card.
  • E (requires an Electronic adapter enclosure) - These adapters must have components--potentially requiring external power--that transform signals, as well as physical enclosure and pin routing.
  • X (requires an eXternal adapter) - Technically the same as E, but such adapter usually consists of 2 parts: a pseudo-card with pin routing and physical enclosure size that perfectly match the target slot and a break-out box (a card reader) that holds a real card. Such adapter is the least comfortable to use.
  • XM (requires an eXternal electro-mechanical adapter) - Technically the same as EM, but such adapter usually consists of 2 parts: a pseudo-card with pin routing and physical enclosure size that perfectly match the target slot and a break-out box (a card reader) that holds a real card. Such adapter is the least comfortable to use.
  • Empty cell - Card cannot be used in such slot, no single adapter is known to exist. Sometimes a chain of adapters can help (for example, miniSD->CF as miniSD->SD->CF).

Review Kingston Card Reader FCR-HS4 UHS-II SD microSD CF MS USB ...
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References


Comparing SanDisk MicroSD card performance (Ultra vs Extreme ...
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External links

  • GumstixDocsWiki Frequently Asked Questions: Are SD cards interchangeable with MMC cards?
  • Types of Memory Cards
  • USB mass storage device class: Mass Storage device class specification 1.4 Date: Feb 19, 2010 -- on the site of the USB Implementers Forum.

Source of the article : Wikipedia

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