"When Samsung introduced their first eMMC 5.0 flash memory in 2013, their 64GB chips were rated for maximum sequential reads and writes of 250MB/s and 90MB/s respectively. Samsung's eMMC 5.1 memory increases the maximum write performance to 125MB/s. Similarly, random read performance increases from 7,000 IOPS to 11,000 IOPS and random write performance increases from 7,000 IOPS to 13,000 IOPS."(celle qu'on retrouve dans les smartphones)news HFR :http://www.hardware.fr/news/14086/emmc-5-1-arrive-samsung.html