Review – Kingston USB 64 GB

I got a USB stick which is Kingston 64 GB. I have concerns about the quality of the USB sticks because I got some USB before which didn’t work very well (incorrect capacity as labelled or damaged sectors)

kingston-64gb-usb-unpacked

From the windows property, it shows it is only around 58G, because the manufacturer claims 1GB = 1000MB instead of 1024MB, 1MB = 1000KB instead of 1024KB etc.

kingston-64gb-usb

Let’s use usbcheck tool to test the quality.

h2test2 usb check tool

It takes a while to complete and as expected, it shows good quality.

usb-check-finish

I probably will add a speed test on this later.

pi@raspberrypi:~$ sudo hdparm -tT /dev/sda1

/dev/sda1:
 Timing cached reads:   312 MB in  2.01 seconds = 155.43 MB/sec
 Timing buffered disk reads:  70 MB in  3.02 seconds =  23.18 MB/sec

At windows command line prompt, you can use inbuilt driver testing utility winsat disk -drive driveLetter to test the performance of reading and writing.

C:\Windows\System32>winsat disk -drive g
Windows System Assessment Tool
 Running: Feature Enumeration ''
 Run Time 00:00:00.00
 Running: Storage Assessment '-drive g -ran -read'
 Run Time 00:00:01.26
 Running: Storage Assessment '-drive g -seq -read'
 Run Time 00:00:05.38
 Running: Storage Assessment '-drive g -seq -write'
 Run Time 00:00:49.16
 Running: Storage Assessment '-drive g -flush -seq'
 Run Time 00:00:11.17
 Running: Storage Assessment '-drive g -flush -ran'
 Run Time 00:00:13.22
 Disk  Random 16.0 Read                       14.07 MB/s          5.6
 Disk  Sequential 64.0 Read                   30.84 MB/s          4.4
 Disk  Sequential 64.0 Write                  12.87 MB/s          3.1
 Average Read Time with Sequential Writes     4.865 ms          6.0
 Latency: 95th Percentile                     6.082 ms          6.4
 Latency: Maximum                             1385.036 ms          1.9
 Average Read Time with Random Writes         5.742 ms          5.8
 Total Run Time 00:01:23.30

Just as a comparison, one of my Kingston 8GB Micro SHDC card has less than 2MB/s read/write speed.

slowest-usb-sd-card-speed

Of course, it might be due to the slow adapter (which might be USB 1.x, the maximum speed is 12Mbps)

–EOF (The Ultimate Computing & Technology Blog) —