64GB Samsung microSDXC Pro UHS-1 Card Review

Which is the best 64GB microSD card out there? Yup, I want to know the answer too because I want to use it on my latest gadget ~ Samsung Galaxy S4. Therefore, I got myself a 64GB Samsung microSDXC Pro UHS-1 Card. It is Samsung fastest microSD card with UHS-I support (Class 10) which provides up to 70 MB/s read and 20 MB/s write speed. And it is waterproof, shockproof against small drops, X-ray proof, magnet-proof and temperature-proof to extremes. How does 64GB Samsung microSDXC Pro UHS-1 Card perform? Let’s find out…

Performance Results

SD Tools
Performance on Samsung Galaxy S4

64GB Samsung microSDXC Pro UHS-1 Card manages to get 75.74 MB/s reading and 20.40 MB/s writing in sequentially on CrystalDiskMark disk benchmark software. No surprise here as it have extra 5 MB/s reading speed of official specifications and same writing speed. However, random reading and writing speeds do look good here.

Err… Samsung Galaxy S4 micro SD card slot is not UHS-I enabled. So 64GB Samsung microSDXC Pro UHS-1 Card performance is lower on Galaxy S4 because can’t use UHS-I feature. Only get 36.6 MB/s sequential reading speed and 16.5 MB/s sequential write speed.

64GB Samsung microSDXC Pro UHS-1 Card

64GB Samsung microSDXC Pro UHS-1 Card is a nice addition to your smartphone and tablet. Lot of disk space for movie, music and other more. And high reading and writing performance on UHS-I supported device. This surely shortens file transferring time and improves overall performance on your device.

Interested? You can grab one here.


  1. Can i use your(this) url to post in an FB Group ? Thanks! Will hold my posting until i get your response.

  2. Maybe you should just add this important detail about the Galaxy S4 so many writers are neglecting to mention. It’s not Samsung’s fault that Google saw fit to disable UHS-1 support in Android Jelly Bean, but they made it so you can no longer transfer Apps to the SD slot memory too. It’s been a major sticking point between the two partners and isn’t over yet.

    Effectively Google is attempting to stop the use of Samsung’s customers to have the ability to purchase and utilize Samsung’s Ultra High Speed Class 1 memory on their Android OS Phones. It’s why on launch of Galaxy S4, Samsung gave no love for Google and touted their own software prowess instead.

    Leaving Samsung to now instead build support into it’s own Tizen OS Smartphones for everything Google is trying to keep them from doing on Android. This is going to be a huge mistake for Google if it continues. Because we have a so called Open Source Google Android being pitted against a supposed Proprietary company working to develop a True Open Source Linux derived OS, that in the future will threaten both Android and Apple Garden Walled Prison Farm iOS!!!

  3. I would like to buy a 8 gb version of this card.. I would like to know if The performance changes changing the gb, can a 64 gb samsung pro card can have better or worse performance then a 8 gb samsung pro card?

  4. Got my 64GB Samsung microSDXC Pro UHS-1 Card few days ago. While trying to run the test on my Note 3, SD Tool doesn’t work at all, said writing error. Not sure why! Wondering any settings needed?


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