SD Association According to the advertisement SD memory cards are becoming significantly larger and faster than before. New SD Express or SD Ultra Capacity cards are said to be able to store up to 128 terabytes at their best and support data transfer speeds of up to 985 megabytes per second. Much more speed and size is needed, especially for recording 4k-quality video.
It remains to be seen whether the figures will actually be achieved in practice. The Verge reminds, It was rumored in 2009 that SD cards could hold up to two terabytes of data, but so far the largest card has only been seen to be the size of a terabyte, which is also just a prototype from Sandisk a couple of years ago. In any case, a theoretical increase in storage capacity by 60 times would mark a significant leap compared to current standards.







