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SDXC cards will be available in capacities up to 2TB

The Secure Digital (SD) format has come a long way since its original inception. Originally conceived as an offshoot of the Multimedia Card (MMC) format, SD cards have matured over the years into the Secure Digital High Capacity (SDHC) versions that are prevalent today for capacities greater than 2GB.

Current SDHC cards are artificially limited to just 32GB, which means that a new standard is being ushered in to boost capacities into the stratosphere. As a result, the new Secure Digital eXtended Capacity (SDXC) format was introduced today at CES. SDXC cards have a theoretical maximum capacity of 2TB and theoretical maximum read/write speeds of 300MB/sec.

The first SDXC cards will hit the market during the first quarter of 2009; however, these first generation cards will have a maximum transfer rate of 104 MB/sec.

"SDXC combines a higher capacity roadmap with faster transfer speeds as a means to exploit NAND flash memory technology as a compelling choice for portable memory storage and interoperability," said Gartner's Joseph Unsworth, research director, NAND Flash Semiconductors. "With industry support, SDXC presents manufacturers with the opportunity to kindle consumer demand for more advanced handset features and functionality in consumer electronics behind the ubiquitous SD interface."

"SDXC is a large-capacity card that can store more than 4,000 RAW images, which is the uncompressed mode professionals use, and 17,000 of the fine-mode most consumers use. That capacity, combined with the exFAT file system, increases movie recording time and reduces starting time to improve photo-capturing opportunities," said Canon General Manager Shigeto Kanda. "Improvements in interface speed allow further increases in continuous shooting speed and higher resolution movie recordings. As a memory card well suited to small-sized user-friendly digital cameras, the SDXC specification will help consumers realize the full potential of our cameras."

We should expect to first seeing SDXC cards from the usual suspects such as SanDisk, Lexar, and Kingston. SDXC will more than likely carry a hefty premium over current SDHC cards, but expect to see that price differential close with time.

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RE: 2Tb on an SD stick...
By RamarC on 1/7/2009 2:15:21 PM , Rating: 2
Looking at NewEgg, I don't see any over 4GB. I think you can get 8GB

there are a few 32GB SDHC cards for $100+. 16GB cards are fairly common and only $30.

the specification is limited to 32GB for compatibility and considered the practical limitations at the time the spec was issued some years ago.

RE: 2Tb on an SD stick...
By DragonMaster0 on 1/7/2009 4:11:47 PM , Rating: 2
the specification is limited to 32GB for compatibility

*cough* FAT32 *cough* (Windows isn't able to format FAT32 partitions over 32GB large, even though the file system supports 2TB)

They talk about "exFAT" for the new cards, does Windows support it?

RE: 2Tb on an SD stick...
By TomZ on 1/7/2009 4:26:13 PM , Rating: 2
exFAT is supported in Vista SP1.

RE: 2Tb on an SD stick...
By kensiko on 1/7/2009 9:48:28 PM , Rating: 2
Fat32Format :)

RE: 2Tb on an SD stick...
By Darkk on 1/8/2009 11:02:50 PM , Rating: 2
It is true Windows won't let you format a large hard drive in FAT32. However, you can use 3rd party software to format any size hard drive in FAT32. I have seen a 500GB hard drive formatted this way as a single partition and it works fine. Problem is FAT32 can't handle extreme large files such as 6gigs.

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