SanDisk 32 GB microSDHC Flash Memory Card (card only) SDSDQM-032G
- Available capacities: 2 GB*, 4 GB, 8 GB, 16 GB, and 32 GB
- Seamless speed and performance with microSD/SDHC compatible devices
- Class 4 Speed performance rating (based on SD 2.0 Specification)
- Tested under the most extreme conditions
- 5-Year limited warranty
SanDisk microSD and microSDHC 1 GB*, 2 GB, 4 GB, 8 GB, 16 GB and 32 GB mobile memory cards are the best and most popular way to carry your music, videos, photos, games, files and applications on your mobile phone. SanDisk mobile memory cards plug directly into most mobile phones with a microSD/microSDHC card slot for the best in convenience and reliability.
List Price: $ 90.99
Price:
So what are the differences between SD Cards and SDHC Cards?
Ever since the introduction of SD cards a couple of year ago the format has gone from strength to strength. Of course requirements have moved on in terms of video recording technology and photography and SD cards need to move with the times. The introduction of high definition video and high mega pixel photography would not have been possible if the SD organization had not come up with a faster storage system than the limited 2gb SD card standard.
So they have introduced the SDHC memory card standard. SDHC stands for “Secure Digital High-Capacity” and is now available and is based on the Secure Digital Association or “SDA” 2.00 specification. SDHC memory card standard provides removable SD card memory storage of far great capacity of up to 64gb for all types of digital devices.
This includes digital cameras, MP3 players, camcorders, PDAs, and much more.
The new SDHC cards guarantee the user a minimum sustained data transfer speed which is a change from the SD card way of doing things which supplies a maximum speed guarantee. The SDHC card comes in three speeds – Class 2, Class 4 and Class 6.
The new SD card, SDA specifications allows for all manufacturers to share common sustained data transfer speed standards. This was something that was not possible with the old SDA standards. The idea behind the new speed classification approach is that it allows the user to select the card speed based on the needs of individual applications, such as High Quality Photography and HD video, rather than basing their assessment on just a maximum SD card speed rating.
Although the SDHC memory cards use the same SD card physical format, they cannot be used with any SD card host device that does not comply to the new SDA Specification, Version 2.00.
This is not the same in the reverse.
Any host device that complies to the SDA Version 2.00 standard can use both SD Card and the new SDHC Cards.
Another variation between the two cards including the formatting system used. All current SD memory cards on Version 1.01 and Version 1.10 use either the file system FAT12 or FAT16. The new SDHC cards with Version 2.00 use the more up to date FAT32. This change was fundamental in allowing the SD cards to support the higher capacity needs of today’s multi media devices.
Although the SDHC card uses the same electrical and physical form factor as SD, the SD 2.0 standard allow the SDHC cards to use a different memory addressing method. SD cards use byte addressing and SDHC uses sector addressing. This change in addressing method, theoretically allows a maximum storage capacity of up to 2tb. Although the SDA have currently limited the maximum limit of SDHC card capacity to 32gb, there are already cards becoming available with 64gb and even more in the pipeline.
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Question by Hitman’s Row: Do the HD video SD memory cards work better than a standard SD memory card ?
I bought a new Sony cybershot digital camera with a 720p HD mode. I need a memory card for to take pictures and video. The 8GB SD card sells for $ 27.99 while the HD Video 8GB SD card sells for $ 39.99. Big difference in price … but is the HD Video SD card better ?
Best answer:
Answer by lare
SD cards are graded according to their speed. Most video devices require a class 6 card or better. The increase in price may be because of being a higher class card. There is no such catagory as HD video SD card according to the SD Association. You may have this confused with HCSD which is a high capacity card, but the same speed classes apply.
Give your answer to this question below!
sweex pny sandisk 4G sd sdhc memory cards
Image by osde8info
sweex pny sandisk 4G sd sdhc memory cards
This Sandisk ‘class-4′ micro-SDHC card is faster than a PNY ‘class-10′,
I purchased a SanDisk 32 GB microSDHC Flash Memory Card SDSDQM-032G nearly two months ago, for use in my VIZIO 8-Inch Tablet VTAB1008. At the same time, I also purchased a higher-priced PNY 32 GB microSDHC Card (P-SDU32G10-EFS2) which is supposed to be a ‘class-10′. My benchmark results, however, show that the Sandisk class-4 card is actually faster – most of the time.
I used two sets of benchmark programs. One is called ‘Flash Memory Toolkit v2.0′, which measures the random read/write speed of files between 1MB and 15MB. The other one is called ‘H2testw v1.4′, which measures the sequential read/write speed using 1GB files. Here are my results: (see my uploaded charts in ‘Customer Images’ section for details)
- For smaller files (1-5MB), the Sandisk class-4 card gives an amazing write speed of 15-17MB/s, while the PNY ‘class-10′ card can only get 1-6MB/s
- For larger files (10-15MB), the Sandisk and PNY cards are about equal at around 8MB/s for write
- For huge files (1GB), the PNY did better at 9.5MB/S, while the Sandisk dropped to 5.5MB/s
- The read speeds of both cards are equally high at around 18MB/S (this number may be limited by the maximum speed of my card reader used)
What the above shows is that: When used in a typical digital camera (with file size 3-5MB), this Sandisk ‘class-4′ card is at least twice as fast as the PNY so-called ‘class-10′ card. But when used in a HD video camera (sequential writing of huge file), then the PNY card should perform better.
For a card to be marketed as a ‘class-10′, it must maintain a MINIMUM write speed of 10MB/s. So by this definition, the PNY card does not qualify since it cannot even achieve a MAXIMUM write speed of 10MB/s. This Sandisk card, on the other hand, exceeds the requirement of ‘class-4′ by a huge margin.
Sandisk seems to be the only flash memeory manufacturer that still gives honest, conservative speed class ratings. Any other manufacturers would have labeled this card a ‘class-6′ or even higher. As a matter of principle, I rather give my money to a company that promises less but delivers more, instead of to others that do the opposite. At the present cost of about 1 buck per GB, this is an unbeatable deal!
[Aside]
The capacity of this card, as reported by my computer, is only 29.7GB. Note that this is actually normal, because compter people define one ‘Giga’ as ’2 to the power 30′, which is 7.4% greater than 1 billion. So 29.7GB comes to just about 32 billion bytes, which is ’32GB’ according to marketing people.
[Update Dec 3, 2011]
I re-tested the two cards above, using the CrystalDiskMark v3.01. The results are consistent with my previous finding. See my newly uploaded charts in ‘Customer Images’ for details.
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|fast,
bought for evo 3d because i was worried the phone would start skipping on the class 10…as ive read.
8MB read max
5-6MB write max
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|More storage!,
Love the SD micro card! I have a Windows Phone 7 (HD7) and it only came with 16GB storage. However, I discovered a way to get this (32GB micro SD) little jewel in there and doubling my storage capacity. If you’re interested in doing that, you MUST purchase a card EXACTLY like this one.
Thanks
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