Computers & Electronics

How fast of a mini sd card do I need?

  • Last Updated:
  • Jun 12th, 2016 9:46 pm
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[OP]
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May 15, 2016
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How fast of a mini sd card do I need?

I want to play high resolution movies on my phone and tablet. Is there a minimum speed I should get or will all of them work? Do you have any recommendations?
6 replies
Newbie
Aug 20, 2014
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New Westminster, BC
It's highly depend on resolution and encoding of your video file.
For a typical 1920 x 1080 @ 25 fps file with H.264 encoding , you need at least 7 MB/s.

The rule of thumb is: minimum speed >= size of the video file (in MB) / length of the file(in second).
Deal Addict
Jul 26, 2004
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Think U1 class is the norm now for hd stuff . 4K may need higher class
Deal Expert
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Mar 14, 2009
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OP all of them will generally work. Even the cheapest Micro SD cards these days have 60MB/sec+ reads and 20MB/sec+ writes. More than enough speed for what you want to do.
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Jun 3, 2006
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SickBeast wrote: OP all of them will generally work. Even the cheapest Micro SD cards these days have 60MB/sec+ reads and 20MB/sec+ writes. More than enough speed for what you want to do.
Just be very careful with the cheapest ones. I had an ADATA died on me in less than a year, only been in 2 phones storing music.
Deal Expert
Aug 2, 2004
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SickBeast wrote: OP all of them will generally work. Even the cheapest Micro SD cards these days have 60MB/sec+ reads and 20MB/sec+ writes. More than enough speed for what you want to do.
SickBeast is correct. Any one will work because the read speeds are decent

Cards are measured by the write speeds. Read speeds were never a problem
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Mar 14, 2009
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ToniCipriani wrote: Just be very careful with the cheapest ones. I had an ADATA died on me in less than a year, only been in 2 phones storing music.
Any of the brands can fail, they all use similar cheap TLC nand. Most brands come with a lifetime warranty,including the cheaper brands.

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