Read Performance

Large Files - MP3 Files

This fileset will show us the maximum read speed of the microSD card. Surprisingly, it did very well at 9.1MB/s.

That's actually 33.7% faster than Kingston's high-performance Elite Pro CompactFlash card which utilizes fast Single Level Cell (SLC) flash memory.

Small Files - Documents

This test was designed to stress the card controller. The Kingston microSD's controller did very well in this test. It was actually 42% faster than the Kingston Elite Pro.

Write Performance

Large Files - MP3 Files

This fileset will show us the maximum write speed of the Kingston microSD card. Unlike what we saw in the read tests, it didn't do so well in the write tests. It only managed to clock a maximum write speed of 4.9MB/s. That gives it a speed grading of approximately 32X.

Small Files - Documents

This test was designed to stress the card controller. The Kingston 256MB microSD card did poorly in this test.

It only managed an average write speed of 393KB/s for small files. That's 35.7% slower than the Kingston Elite Pro CompactFlash card!