Kingston 32 GB microSD Class 10 Card Review

CrystalDiskMark

CrystalDiskMark is a HDD benchmark utility for your hard drive that enables you to measure sequential and random read/write speeds.

Key Features

• Measure sequential reads/writes speed
• Measure random 512KB, 4KB, 4KB (Queue Depth=32) reads/writes speed

Using this utility, we measured read and write speeds of the card in two ways. We used the integrated card reader of our test laptop for the first method. In the second method, the microSD card was mounted in the Samsung Galaxy S Fascinate phone and connected to the laptop with a USB cable.

Method 1: Card Reader

Both of the cards end up performing nearly the same for most of the tests except a few where class 10 card shows its awesome writing speed advantage. In the Random 4KB tests the class 10 card is around 6-7 times faster at writing the data. Incidentally, it’s quite a bit slower at reading data for the same tests.

Method 2: USB Mode

The 4KB random data write speed advantage of the Class 10 card take in the card reader method is gone here as both the cards write at the same speed. However, the class 10 card is still slower at reading the 4KB random data. The class 10 card is also quite a bit slower at reading random 512KB data. In the other tests, both of the cards show about even performance.