When SD memory cards came out, I was quite excited. The storage space available on such a tiny piece of plastic was amazing. I was quickly dismayed as they topped out at 4 GB. Then the SDHC cards came out. I was excited again, but I being a greed consumer wanting more and more storage, I was once again disappointed as it topped out at 32GB. Due to limitations on transfer speeds and file systems SD cards have gone though a few upgrades. Now comes the SDXC memory card which has surpassed my expectations.
The next-generation SDXC memory card increasingly improves the digital lifestyle by increasing storage capacity from more than 32 GB up to 2 TB. Yes, I said 2 Terabyte! It also increases the bus interface speed up to 104 MB per second currently, with a hopeful 300 MB per second. SDXC’s immense capacity will provide more portable storage and speed, which are often necessary to support new improvements in electronic devices, notebook computers, and mobile phones.
SDXC uses Microsoft’s exFAT file system to support its large capacity in a broad range of PCs, consumer electronics and mobile phones. The exFAT system was designed for increased compatibility with flash media, from portability of data to interoperability with multiple platforms and devices on removable media.
SDXC Supports UHS104, a new high speed interface in the new SD Memory Card Standard Ver. 3.00, which boasts a 104MB per second bus speed on the SD interface, and write speeds of 35MB per sec., with a read speed of 60MB per sec. The new SDXC interface is backwards compatible with all your SD cards.
The move from hard drives to flash drives is in my opinion is inevitable. Already, every notebook, PC, and netbook on the market includes a slot for a flash memory card. These slots currently allows a SDHC card from A-DATA to be used to expand the storage capacity. This is very critical for netbooks that use solid state memory for storage and have limited storage space. These solid state drives provides just enough space for things like the OS and some basic applications but very little room for data or extra applications. Until the new SDXC card becomes common place, it is also important to get a high speed SDHC card that is rated at Class 6 such as the Turbo SDHC series so that the memory reads and writes to the card will be as fast as possible. Even if you have a hard drive based netbook, a SDHC card can be useful for transferring data between devices.
I look forward to the SDXC as the new format for storage, and replacing those over-sized, noisy hard drives we have now. I believe this has changed the future of all media. However, as I am still that greedy consumer, I will be looking for more. It will someday be that 2 Terabyte of storage may not be enough….I look forward to that day.