Feeds
75%

SanDisk 4GB SDHC memory card

High capacity, low speed?

Internet Security Threat Report 2014

Review The organisation that oversees the SD memory card standard announced the SD High Capacity (SDHC) format back in January, but it's taken the best part of eleven months for cards based on the specification to make it to market. There have been a fair few announcements of SDHC products, particularly in Japan, but the first to arrive in the Reg Hardware office is SanDisk's 4GB card...

That capacity is key to what SDHC offers over the vanilla SD specification. SD cards arrange the files and folders they contain using the FAT16 file system. SDHC uses FAT32. Don't worry about the jargon - what it means is that SDHC can support much larger storage capacities than the 2GB the SD format is limited too. As I say, SanDisk's debut SDHC card holds just under 4GB of information - the file system itself takes up some space - and 8GB cards have already been announced by other vendors.

sandisk 4gb sdhc plus free card reader

The downside is compatibility. A gadget that supports SHDC will read all your old SD cards, but don't expect your SD-friendly digital camera, memory card reader or that slot in your notebook to be capable of using SDHC cards. For now, devices with SDHC-compatible slots are few and far between - SanDisk's own documentation lists 35 devices, all cameras or camcorders from Japanese vendors - though the numbers are increasing, and are likely to balloon next year.

For now, SDHC support is limited, which is why SanDisk is bundling its SDHC cards with one of its USB-connected MicroMate card readers. It's a true USB 2.0 device, communicating at 480Mbps, and is compact enough to make it easy to carry around with you.

To test SanDisk's 4GB SDHC card, I plugged the MicroMate into my MacBook Pro's USB 2.0 port. I also used the card reader to test SanDisk's Ultra II SD card, albeit a 512MB version. I also ran the same tests on a 4GB Peak Xtreme USB Flash drive.

SanDisk's SDHC is rated a Class 2 device, which means its capable of a minimum guaranteed data transfer rate of 2MBps. The SDHC spec also includes Class 4 and Class 6 - respectively delivering at least 4MBps and 6MBps.

Top 5 reasons to deploy VMware with Tegile

Next page: Verdict

More from The Register

next story
Chipmaker FTDI bricking counterfeit kit
USB-serial imitators whacked by driver update
Xperia Z3: Crikey, Sony – ANOTHER flagship phondleslab?
The Fourth Amendment... and it IS better
DOUBLE BONK: Testy fanbois catch Apple Pay picking pockets
Users wail as tapcash transactions are duplicated
Microsoft to enter the STRUGGLE of the HUMAN WRIST
It's not just a thumb war, it's total digit war
Google Glassholes are UNDATEABLE – HP exec
You need an emotional connection, says touchy-feely MD... We can do that
FTDI yanks chip-bricking driver from Windows Update, vows to fight on
Next driver to battle fake chips with 'non-invasive' methods
prev story

Whitepapers

Why cloud backup?
Combining the latest advancements in disk-based backup with secure, integrated, cloud technologies offer organizations fast and assured recovery of their critical enterprise data.
A strategic approach to identity relationship management
ForgeRock commissioned Forrester to evaluate companies’ IAM practices and requirements when it comes to customer-facing scenarios versus employee-facing ones.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
New hybrid storage solutions
Tackling data challenges through emerging hybrid storage solutions that enable optimum database performance whilst managing costs and increasingly large data stores.