Samsung microSDHC UHS-1 card 32GB

It is a SD card, actually microSD card with high capacity. Samsung microSDHC UHS-1 card 32GB.
samsung-sdhc-32gb

The front of the package. Gold seal has a scratch zone, which is the security code to verify it.

samsung-sdhc-32gb-back

Back pic. It include the featues list.

  1. Water proof.
  2. Magnet Proff
  3. Temperature Proof
  4. X-ray Proof
  5. 10 years limited warranty

The stated speed of it is 48MB/s. Let me see if it is that fast.

I don’t have a microSD card reader on my laptop. So I put it into the microSDHC adapter.

It looks like below:

samsung-32gb-in-adapter

I have a 5GB file in the card. Put the SD adapter into the build-in card reader of my Dell Laptop.  Copy the file and paste it into local disk.

samsung-32gb-copy-speed-1

Around 40MB/s, steady speed during the whole copying period.

It is Read speed.

Then I test it on my Desktop. I have to use a 35-in-1 card reader which connect to my PC with USB 2.0 port.

35-in-1-card-reader

Then repeat the test.

The read speed is 17MB/s. I believe the bottleneck is USB 2.0 and the this cardReader.

samsung-32gb-copy-speed-2

So, rember. To get higher speed, with less adapter or reader, or connection. Any thing between the sd card and computer can be the bottleneck of the speed.