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Western Digital: Sandisk brings Micro SD card with 400 GB

Friday, September 1st, 2017 | Gadgets

The Wester-Digital subsidiary Sandisk presented the UltraPlus with 400 GBytes at the electronics fair IFA 2017. The Micro SD memory card currently has by far the highest capacity – so far 256 GB as the Sandisk Extreme the upper limit. The SDXC standard (Extended Capacity) supports up to 2 TBytes. The new UltraPlus can handle a lot of data and has a usable reading speed, but users have to wait an hour or so when all content is to be transferred.

Western Digital is calling only Android smartphones and tablets as the purpose of the Sandisk UltraPlus with 400 GB, but the Micro SD card can also be used to add more memory to devices such as Microsoft's Surface Pro. The read speed is 100 MB per second, the write speed is not mentioned by the manufacturer. Since the UltraPlus is A1-certified, it has to create at least constant 10 MByte the second and 1,500 IOPS.

Sandisk uses the UHS-I interface instead of an interface with UHS-II. That would theoretically deliver up to 312 MB the second, UHS-III creates 624 MB per second and UFS cards up to 729 MB the second. However, micro SD cards with UHS-II are rare, UHS-III and UFS-C are not yet available.
As the computer base has experienced, the Sandisk UltraPlus with 400 GB is still delivered in September 2017. According to Western Digital, it costs 250 euros – but there is, for comparison only, an SSD with 1 TB capacity.

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