MicroSD UHS-1 C2 Android - 8GB

Description

Manufacturer Part Number : Sandisk SDSDQAD-08G/16G
Interface : UHS-1 SDR50

Sequential Write speed : 10MB/sec
Sequential Read speed : 40MB/sec
Pre-installed Android 5.x or latest version

Storage I/O comparison

The C2 can boot from a MicroSD card or an eMMC module. The MicroSD interface supports the higher performance UHS-1 mode as well. File access of a 512MB file (read/write) on two different storage options shows distinct performance differences. The eMMC 5.0 storage is ~7x faster than the MicroSD Class-10 card in read tests. The MicroSD UHS-1 card is ~2x faster than the MicroSD Class-10 card in read tests. The MicroSD UHS-1 card provides a great low-cost option for many applications!

To obtain the results in the storage I/O comparison graph, type the following lines at a command prompt.
Write speed command :
$ dd if=/dev/zero of=test.tmp oflag=direct bs=8M count=64

Read speed command :
$ dd if=test.tmp of=/dev/null iflag=direct bs=8M count=64