Toshiba claims world’s fastest MicroSD card with 4K support

Toshiba claims it has developed world’s fastest microSD cards. The cards are compliant with the ultra high speed serial bus interface UHS-II and will be available in 32GB and 64GB. According to Toshiba they are able to achieve the fastest transfer rates of any microSD card.


The cards are UHS Speed Class 3 (U3) enabled, and allow 4K video capture at constant minimum write speeds of 30MB/s. This means that 4K2K video, live broadcast and content can be recorded on high-performance cameras.

The 32GB cards achieve maximum read speeds of 260 MB/s and maximum write speeds of 240MB/s. The 64 GB cards are much slowers with maximum read speeds of 145MB/s and maximum write speeds of 130MB/s .

Compared to Toshiba’s current 32GB microSD UHS-I cards, the company writes the write speed is improved by approximately 8 times, while the read speed is improved approximately 2.7 times.

Sample shipments for manufacturers of smartphones and other mobile devices, and for chipset vendors, start today.