SDHC Memory Card

SDHC Cards are next generation Secured Digital memory cards, primarily introduced to overcome the limitations of capacity in the previously conventional SD Cards.

Removable storage devices have received a massive surge in terms of global applications over the past few years, being chief technological drivers behind modern technological devices such as smart phones, digital cameras, PDA’s, etc. Secured Digital memory cards (also known as SD cards) contribute a significant percent when considering overall uses of hand-held storage devices, even though Compact Flash cards are used in high definition digital cameras. Although they are physically smaller than the CF cards, SD cards are actually faster of the two. However, the memory capacity of SD cards stands as a drawback in comparison due to the fact that the limit stretches to a mere 4 GB (even though the capacity’s increasing through time) while the capacity in a CF can stretch up to 16GB.

SanDisk pioneered the SD card in the year 2001 on the basis of the multi-media card standard. Their digital rights are managed by CPRM, while the SD card also features a non-hardware write protection switch which is handled by the client device settings.

An average SD card measures 24mm x 32mm x 2.1mm and its compact physical features allow convenient administration, standing as a significant factor for the SD Cards being a “bridge media” that can be maneuvered between various commodities. Its affinity in playing music and video clips with the deprivation of drive components such as CD’s or DVD’s with the utilization of decoder software makes the SD card a compact apparatus for designers to stretch their creative horizons. Expulsion skipping music and video files adds up to the credibility of the SD card.

Secure Digital High Capacity cards (SDHC cards)
SDHC (Secure Digital High Capacity) cards are basically a renovated version of the SD card, produced due to the storage limit drawback in a conventional SD card. They feature a higher capacity, initiating from 4GB and escalating to a maximum of 32GB with the specifications of three data-writing speeds chosen by the developers and assure minimal data transfer rates.

The standard and the high-capacity cards as well as their related products are rated specifically with a minimum data transfer rate by the SD Association. The latest Speed Class requirements enable the host product to verify the disintegrated condition within the card and sum up the write speed of the entire card. The speed specification allows the host in order to certify the data writing sectors. The SDHC speed classes comprises of three variations, Class 2, Class 4 and Class 6, enabling a minimum transfer rate of 2, 4 and 6MB each second.

The SanDisk Extreme III 4 GB
From the pioneers of the SD cards, comes a new, faster variety of SD card from the SanDisk Extreme series. The Extreme series has contributed in the domination of one of the fastest options in the market when it comes to choosing SD cards. The package consists of a USB 2.0 card reader known as the MicroMate and SanDisk specifies a warranty statement of 10 years to the usage of the product other than providing it for lifetime.
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The SDHC’s Extreme III cards are all rated as class 6 transfer ratio and are available at capacities starting from 4GB and stretching to 16GB. However, the Extreme III series has two categories. The conventional Extreme III extends to a speed of 20 MB/s as well has consists of a 30 MB/s edition. The 4 GB Extreme III peaks to a 19.7 MB/s reading speed, and a writing speed of 18.2 MB/s, as a result, making the Extreme III the second most agile SDHC to be considered post to Lexar’s Professional.

SD cards and SDHC cards are now a globally widespread commodity due to the increased level of production of various electronic components that require a certain amount of data storage within them. The price range is also reasonable and affordable enough for consumers to purchase and get the best out of the choices of their flash storage devices.

This SDHC Memory Card Review is Written/Updated on Mar 30th, 2010 and filed under Consumer Electronics. Both comments and pings are currently closed.

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