# What MicroSD card has the fastest transfer rate

**URL:** <https://boards.straightdope.com/t/what-microsd-card-has-the-fastest-transfer-rate/632335>\
**Category:** Miscellaneous and Personal Stuff I Must Share\
**Created:** [August 23, 2012, 2:02am UTC](https://boards.straightdope.com/t/what-microsd-card-has-the-fastest-transfer-rate/632335 "2012-08-23T02:02:14Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Wesley\_Clark](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/wesley_clark/32/20581_2.png) [@Wesley\_Clark](https://boards.straightdope.com/u/Wesley_Clark)\
**Post date:** [August 23, 2012, 2:02am UTC](https://boards.straightdope.com/t/what-microsd-card-has-the-fastest-transfer-rate/632335/1 "2012-08-23T02:02:14Z")

</div>

If I want a MicroSD card (that I will use with an adapter as both an SD card and a miniSD card), what ones have the fastest transfer rates? I am topping out at 5MBps with mine.

---

<div class="post-metadata">

**Author:** ![Seanette](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/seanette/32/9139_2.png) [@Seanette](https://boards.straightdope.com/u/Seanette)\
**Post date:** [August 23, 2012, 2:31am UTC](https://boards.straightdope.com/t/what-microsd-card-has-the-fastest-transfer-rate/632335/2 "2012-08-23T02:31:58Z")

</div>

> [@Wesley\_Clark](#):
>
> If I want a MicroSD card (that I will use with an adapter as both an SD card and a miniSD card), what ones have the fastest transfer rates? I am topping out at 5MBps with mine.

I don’t know enough about the various brands to comment, but I’d suggest looking for a [Class 10](http://en.wikipedia.org/wiki/Secure_Digital#Speeds), which are rated at 10 MB/sec minimum.

---

<div class="post-metadata">

**Author:** ![astro](https://avatars.discourse-cdn.com/v4/letter/a/9dc877/32.png) [@astro](https://boards.straightdope.com/u/astro)\
**Post date:** [August 23, 2012, 3:42am UTC](https://boards.straightdope.com/t/what-microsd-card-has-the-fastest-transfer-rate/632335/3 "2012-08-23T03:42:41Z")

</div>

[Samsung rolls out Ultra High Speed microSD cards destined for LTE phones and tablets](http://www.engadget.com/2012/04/05/samsung-ultra-high-speed-microsd/)

> [@](#):
>
> While so far the Ultra High Speed Class 1 memory card designation has been reserved for SDXC and SDHC cards, Samsung just announced new microSD cards that support the faster interface as well. Currently being produced in 16GB sizes, they have maximum sequential read speeds of up to 80 MB/s, four times that of the high speed cards it introduced last year

.

If your SD drive slot interface does not have chipset or drivers capables of using the higher speed you may be wasting money. Many do not. Check before you buy and pay a premium for a high speed card.