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The increase in manufacturer capacity, from gigabytes to terabytes, was 15 years old
. Lexar has launched the first commercially available SD memory card from a terabyte. The card is available for pre-order and its price is $ 399, according to The Verge, informs Ukr.Media.
Despite the fact that, to date, Secure Digital (SD) is by no means the most compact form of memory cards, it remains one of the most popular and widely used devices, such as cameras, camcorders, drones and others. Since many of these devices are used to capture video, including 4K and 60 frames per second. With such recording settings, the clock can take anywhere from a few tens to hundreds of gigabytes, which allows manufacturers to constantly increase the amount of memory cards and reduce the cost of their production.
For the first time in 2016, SanDisk, which introduced a prototype SD card with this volume, but in the last 18 months, this prototype has not been materialized by a batch product. The first serial SD card with a volume of a terabyte was the Lexar manufacturer's card. It supports the UHS-I data exchange protocol and is certified for U3 and V30 speed classes. This means that he is able to maintain a stable recording speed of 30 megabytes per second. In addition, the manufacturer claims that internal testing has shown a write speed of up to 95 megabytes per second. In the general case, the speed of 30 megabytes per second is sufficient to record a video in 4K format with a frequency of 60 frames per second. The memory card is already available for sale at $ 399, although the price recommended by the manufacturer is $ 499.
It should be noted that the increase in the maximum capacity of SD cards from one gigabyte to one terabyte by manufacturers took 15 years – the first card, on which you could write a gigabyte of data, was put in sold in January 2004. At the same time, the other popular microSD cards have not yet reached a terabyte and their maximum capacity is 512 GB.
By increasing the physical capabilities of cards, their designers adapt them to the format and data transfer protocols. In the middle of last year, the SD Association introduced a new SDUC standard supporting up to 128 terabytes of data, as well as the SD Express standard, which supports PCIe and NVMe interfaces on the SD card. which, in the future, will increase the speed of data exchange to nearly a gigabyte per second.
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