Samsung Galaxy S III 16GB Smartphone Review – AT&T 4G LTE

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Samsung Galaxy S III microSD Testing

Before we conclude our testing on the Samsung Galaxy S III we wanted to see how fast the phone could read and write to the microSD card. One of the main selling points of Android smartphones is that nearly all of them have expandable storage. We wanted to see how fast the phone could read and write data to this interface.

SanDisk Extreme Pro microSDHC UHS-I card

The SanDisk Extreme Pro microSDHC UHS-I is the fastest microSDHC memory card in the world. This card is class 10 and UHS Speed Class 1 rated (UHS-104). With a read speed of 95 MB/sec it means that this card is speed rated at 633x for those looking for
CompactFlash IDE emulation speed numbers. The write speed isn’t much slower at 90 MB/sec or 600x. These are impressive ratings and this card should be able to easily handle full HD video and blazing data transfer speeds.

SanDisk Extreme Pro microSDHC UHS-I card

It is also the perfect card to test out on the Samsung Galaxy S III.

SD Card Tester App

We ran the SD Card Tester v1.0.5 App and found that it worked greet on the Samsung Galaxy S III Smartphone. With
the file size set to 376MB the benchmark showed write speeds at 15.6
MB/s and read speeds at 22.25 MB/s on the smartphone.

SD Card Tester App

The App says that larger file sizes are better for testing, so we set
the file size to 2501 MB and ran the benchmark again. Here we
discovered 23.66 MB/s read speeds and 13.41 MB/s write speeds. These
speeds are slower than what the SandDisk Extreme Pro are capable of, so
the Sasmsung Galaxy S III is clearly causing the bottleneck. Not bad performance numbers though! 

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