Fastest Micro SD Card Shootout! – Samsung vs. Sony vs. SanDisk!


I use a lot of microSD cards, mostly because I flash a lot of custom ROMs on my Android smartphones and I wanted to find out which microSD card is the fastest in the world.

For this shoot, I am using three of the best Class 10 microSD cards from Samsung, Sony, and SanDisk, the Samsung 64GB PRO rated at 90MB/s, Sony HighSpeed MicroSD rated at 95MB/s, and the SanDisk Extreme PRO rated at 95MB/s.

First, I did a read and write speed test using a free software called Check Flash by a Russian developer.

After doing tests on all the microSD cards, I found some interesting results.

For this particular test, I used my Kingston USB 3.0 microSD card reader.

The SanDisk Extreme performed the best with read speed of around 90MB/s and write speed of 54MB/s.

Samsung came second with read speed of 85MB/s and write speed of 45MB/s.

Sony came last with read speed of 65MB/s and write speed of 30MB/s.

Now all of these manufacturers state their cards transfer at or faster than 90MB/s. Well, reality tells you different results and that is why I did this test.

I also did some real file transfer tests because I want to see real results for myself, not just rely on a speed test software.

I was able to write 2GB file to a Sandisk Extreme PRO card in just 27.76 seconds, to Samsung PRO in 28.13 seconds, and Sony card in 38.61 seconds.

For reading, I copied a 2GB file from the microSD cards to my computer, Sony actually came up first at 20.86 seconds, SanDisk next at 22.80 seconds, followed by Samsung at 23.88 seconds.

Now, for write speeds, my real life tests confirmed the Check Flash software while my read speeds were slightly different.

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Max Lee

Max Lee is the founder of Max makes Android tutorials and review videos for people who want to get high on Android over at his YouTube channel and Korean YouTube channel.

8 Responses

  1. Geert Jalink says:

    The Galaxy S6 unfortunately has a Micro SDCard slot NO LONGER. I really hope the new Galaxy Note at the end of this year has.

  2. Patrick Cardon says:

    Think you convinced me to stick to a 64GB Samsung Pro for my Note Edge to keep up with the video, and then pop a 128GB Samsung Evo in my Note Pro 12.2 tablet (better screen for watching videos and does not record 4K anyway)

  3. Patrick Cardon says:

    First article where I can get real data tested on computer and on phone. Might start by buying the 128GB to test on the Edge, if video keeps running smoothly for 20 mins might go for 2 128GBs. Intended on making photos and movies but also drag along a lot of music and videos. Plus some games

  4. Hello^_^ says:

    I bought two 32G SanDisk Ultra class 10, they are garbage. Speeds are a persistent 2MB/s write and 2-4MB/sec read. Compare this to my class 2 Polaroid using the same card reader and getting 16MB/s. SanDisk is a joke. I used Linux mint to benchmark using the built in benchmark tool and my android phone.

    • Giles Smith says:

      You have a fake sandisk card LOL

      • Hello^_^ says:

        You’re right, it was counterfeit. I contact sandisk they didn’t even know the symptoms of a counterfeit card, idiots. So, after some research I found out it’s a counterfeit and got a refund, reported the seller as well and bought some legit Sandisk cards from the store. They’re fast, reliable so far, but Sandisk… they’re not too bright.

  5. Patrick Cardon says:

    Right used A1 SD Bench for a quick test on the Samsung Evo+ 128 GB Class 10 card I got … Read 47, 04 MB/s Write 18,23 MB/s so within the Read up to 80 MB/s and Write up to 20 MB/s advertised on the Samsung website. Recorded a whole 5 minutes (maximum with Samsung app), good for 1,7 GB file and seems to play back without a problem. So in my book this card’s been approved 😉 Now need another one for my Galaxy Note Pro 12, though not sure I need an Evo+ for that one.

  6. duncan says:

    You have to watch out for fake sandisk cards. There are loads out there. The fakes will have slower read and write, less storage than stated and are likely to fail. I have not had any problems with genuine sandisk cards.