Why Do microSD Cards Have a Maximum 32GB capacity?

The vast majority of currently available Smartphones on the market use microSD cards in order to provide a boost of convenient and removable storage space for Documents, Music, Pictures and so on. Even though with Windows Phone 7, things will change since the upcoming mobile OS from Microsoft – even if it will support microSD cards, they will not be user swappable and accessible – the rest of the players on the market, both OS and OEMs will still support microSD cards.

Currently, microSD cards have a maximum capacity of 32GB as this is a limitation imposed by version 2 of the SD Specifications: “High Capacity SD Memory Card: More than 2GB (This version of specification limits capacity up to and including 32GB)”.

Don’t worry, there’s a new standard coming soon, called (micro)SDXC – XC stands for Extra Capacity while HC is for High Capacity, which also has its limitations: 2TB. The upcoming (micro)SDXC cards will have a storage space between 32GB and 2TB. As far as speed is concerned, they will be labeled UHS (Ultra High Speed), “the fastest performance category available today, defines bus-interface speeds up to 104 Megabytes per second for greater device performance in SDXC and SDHC host products”.

Now, tell us, what would you store on a 2TB microSDXC card in your Device?

(Source: SD Association)

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Anton D. Nagy
Anton is the Editor-in-Chief of Pocketnow. As publication leader, he aims to bring Pocketnow even closer to you. His vision is mainly focused on, and oriented towards, the audience. Anton’s ambition, adopted by the entire team, is to transform Pocketnow into a reference media outlet.
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