One of the most important decision when choosing an iPad is deciding how much memory you need. As of 2010, the iPad range includes storage capacities of 16GB, 32GB and 64GB, and the amount of memory has a significant impact on the cost.
The iPad's most memory-hungry feature is playback of videos. The iPad features a high resolution screen, which in turn makes video file sizes quite large. Generally these files sizes are in the region of 1 GB per hour for high quality video. Therefore, if you plan on carrying and watching a lot of video content on the iPad, the highest memory capacity is recommended.
While the occasional iPad game or application can be as much as 700 MB in size, very few are above 150 MB. Most games and applications are built to be under 20 MB in size, as this is the cut off point for downloading from the App Store via the 3G cellular data network. Over 20 MB, and Wi-Fi must be used for downloading. Because of this, even the smallest model has plenty of storage if you intend to use the iPad primarily for games and applications.
Cloud storage refers to files and data that are saved on the Internet, rather than on the device itself. The iPad can access a host of different cloud storage systems, so long as it maintains an Internet connection. If the iPad is intended for work use, word processing, or as a laptop replacement, making use of cloud storage can significantly reduce the amount of on-device storage required. By saving files and data to the cloud, you can easily manage with a lower storage capacity device while still having full access to a huge number of files.
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