For most, a generic off-the-shelf microSD card is probably just fine. It may slow things down and take a little longer to access, but that's alright in return for lower cost. For some people, though, having their device slowed down by a budget microSD card isn't an option. Other people need high performance for recording 3D and 1080p video. It's those two groups that the SanDisk Extreme Pro microSDHC UHS-I card is for.


I think SanDisk caught Sprint's case of diu nominibus.

SanDisk touts the Extreme Pro as being "the fastest microSDHC memory card on the market." I haven't tested every card on the market, but they're probably right. To put it simply, this card feels the need... the need for speed (sorry, I couldn't help myself.) As a point of reference, here are some other recent microSD benchmarks:

samsung16gbc10 SD64gbc6 SD64gbuhs1

From left to right: Samsung 16GB class 10, SanDisk 64GB class 6, SanDisk 64GB UHS-I. Same app and phone used for all 3 tests.

The direct competitor here is the Samsung 16GB class 10 card on the far left - 6.0 MB/s write, 16.0 MB/s read. Let's take a look at how the Extreme Pro fared:

wm_samsung gt-i9103 2012-06-27 23-14-56 wm_samsung gt-i9103 2012-06-27 23-12-33 wm_samsung gt-i9103 2012-06-27 23-13-56

Let's just agree to call it Maverick. It's accurate, and it's shorter and easier to remember.

There's no arguing that it's fast as hell. It blew past the 64GB UHS-I card and ran circles around the Samsung 16GB class 10 card while laughing hysterically.

But is it worth the $100 price tag? As with most questions of this nature, that depends on your needs. If you absolutely need the the speed - mainly for recording HD or 3D video, or if you're just an outright speed nut with money to spare - then sure, this is the right tool for the job. But with the 64GB UHS-I card now selling for $100 too, the 16GB card is a harder sell for most people. After all, the 64GB card still offers impressive speeds and four times the storage. In the world of HD screens and videos, higher-bitrate music, and increasingly large apps and games, that may be of more importance to most people.

wm_IMG_1328 wm_IMG_1329 wm_IMG_1332

For those who need the blazing-fast speeds, though? There simply isn't a better option on the market today.

[via SanDisk]

Aaron Gingrich
Aaron is a geek who has always had a passion for technology. When not working or writing, he can be found spending time with his family, playing a game, or watching a movie.

  • PacoBell

    How does it perform with hundreds of small writes to hundreds of files simultaneously? Another use for external storage (at least on internal memory constrained devices) is to move application executables and data to SD. Here, sequential write speed isn't nearly as crucial as random writes.

  • Lekz

    Lol. A MicroSD card and an HTC with no MicroSD slot.

  • http://twitter.com/rohanXm Rohan Mathur

    My question is why it is shown with a HTC One X which doesn't have a Micro SD slot... but hey, it looks pretty sleek haha.

    • AaronGingrich

      Because the HOX is bigger than the 4.2" phone I use to test the microSD cards, so it emphasizes just how remarkably tiny a microSD card is. The fact that it's a better looking device is just an added bonus :)

      • http://twitter.com/rohanXm Rohan Mathur

        Ah haha I understand. Yeah that is really small, crazy how they can fit so much data onto such a small thing.

  • Jrichh609

    I just ran that program and my $15 ADATA 16gb micro SD showed 13.2 write and 28.6 read.

    • Donatom3

      My 64gb version of this card ($59.99) that is half full is showing 12.0 write and 38.6 read on my Evo LTE. I think the only way to really push a card and find out it's full read speed is to run a test on it using a computer with a card reader hooked up to a usb 3.0 port.

  • Tyler Chappell

    So far I really haven't heard any complaints about the majority of people's SD cards not being able to handle HD video on their higher-end phones, so the cost seems a little unjustified for the time being.


    can you run crystalmark to show the 4k and 512k writes and reads

    • http://www.facebook.com/rchgrav Richard Graver

      Yes, please do test it with crystal disk mark... random access / small files. Some of us are running an Operating System off of these things. ;-) (ARM Dev Boards FTW)

  • albe
  • LesD

    Would love to see this card tested in a Galaxy S3. It supports SDXC and exFAT, so this card might perform at faster speeds.

  • mhmmd123

    I use PATRIOT MicroSD card Class 10, I get in write speed closed to 10 MB/s and on the read speed 21.5MB/s

  • http://pulse.yahoo.com/_4ISDQDUEWYZUAGYLXFVQ72TSPU D

    The pictures appear to be all wrong. The 3 pictures at the bottom clearly say, "Samsung GT-19103" but you describe them as if they are SanDisk benchmarks ... they are not!

    • NCRoadster

      That's the phone he used.