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Author: gaara

SD cards - Capacity & Performance

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 Author| Post time 2015-6-5 22:07:17 | Show all posts
Ok, It should be useful to compare with SATA, but I think it's nearly the same.
I havn't found another app to test it

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Post time 2015-6-18 03:38:41 | Show all posts
Edited by costalat at 2015-6-18 19:35

dd if=/dev/zero of=~/test.tmp bs=500K count=1024
sync; echo 3 | sudo tee /proc/sys/vm/drop_caches
dd if=~/test.tmp of=/dev/null bs=500K count=1024

Kingston microSDHC Class 10 UHS-I
Write: 524288000 bytes (524 MB) copied, 38.3062 s, 13.7 MB/s
Read:  524288000 bytes (524 MB) copied, 30.8431 s, 17.0 MB/s

The Sdcard reader is the limiting factor. As so, threre's no need to buy a ultra fast sdcard.





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Post time 2015-11-11 23:06:23 | Show all posts
Edited by Fourdee at 2015-11-11 15:17

Using DietPi benchmark (Seq R/W, BS 4k):
Device = Orange Pi Pc
SD = Sandisk Extreme UHS-3 16gb
USB = Sandisk Ultra Fit usb3.0


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DietPi - Lightweight justice for your Orange Pi. http://dietpi.com

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Post time 2015-12-15 06:47:17 From the mobile phone | Show all posts
Edited by crazykill at 2015-12-15 06:48

SSD rarely uses more than 0.5AA which the board can provide with good psu.5V 2A.Best way to go is with higher current 5v supply something like 3-4A and use a powered hub.
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