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MicroSD Cards for B+ ?

Posted: Mon Jul 14, 2014 10:52 am
by Binraider666
Morning all,

Very much looking forward to the release of the B+. Does anyone have any advice on card compatibility etc. so I can get the relevant parts ordered in advance. I am considering either the Sandisk Ultra or Extreme 64GB card linked below.

http://www.amazon.co.uk/SanDisk-SDSDQXL ... emory+Card

Of course, labelling things as "ultra" doesn't really help explain which one is the highest performance, so if anyone is able to explain that too that would be very much appreciated.

I had bad experiences with the SD card slot on the older 512MB model (though the 256MB model B still works just fine!) so seriously looking forward to having a more solid construction on the new one!

Dave

Re: MicroSD Cards for B+ ?

Posted: Mon Jul 14, 2014 10:54 am
by RaTTuS
Please use
http://www.raspberrypi.org/forums/viewt ... 63&t=81736
and the micro SD cards that come with noobs on them from the foundation [or element14 or rs] are also perfect for this as they are *optimized* for RPi use...

Re: MicroSD Cards for B+ ?

Posted: Sat Aug 02, 2014 5:03 pm
by AndrewS
If you are planning to use a 64GB card, be aware of http://www.raspberrypi.org/forums/viewt ... 01#p588601 if using NOOBS.

Re: MicroSD Cards for B+ ?

Posted: Tue Dec 16, 2014 11:22 pm
by user4rpi
It was mentioned above that the supplied NOOBS micro SD was *optimized* for raspberry Pi use. I'd like to know in what way?

I am interested in buying a micro SD card so I can copy the original NOOBS micro SD card contents onto it. I'd save the original one for safety and use the copy. I see good reviews on a Samsung EVO class 10 micro SDHC card (the 32GB is $18 and the 16GB is $10). Would these be OK for use in the R.Pi B+ ?

Re: MicroSD Cards for B+ ?

Posted: Tue Dec 16, 2014 11:53 pm
by fruitoftheloom
user4rpi wrote:It was mentioned above that the supplied NOOBS micro SD was *optimized* for raspberry Pi use. I'd like to know in what way?

I am interested in buying a micro SD card so I can copy the original NOOBS micro SD card contents onto it. I'd save the original one for safety and use the copy. I see good reviews on a Samsung EVO class 10 micro SDHC card (the 32GB is $18 and the 16GB is $10). Would these be OK for use in the R.Pi B+ ?
It has been stated several times this month and previously that the RPi I/O speed is suitably matched for Class 4 or 6 Cards

http://en.wikipedia.org/wiki/Secure_Dig ... ass_rating

Whilst Class 10 cards should work with no issues, they are designed for faster I/O devices such as Full HD Video Cameras

Re: MicroSD Cards for B+ ?

Posted: Wed Dec 17, 2014 9:35 am
by jamesh
More specifically, class 10 are optimised for long sequential bursts of data. But the Raspi on average produces short random accesses. So a card optimised for the latter will work faster than one optimised for the former.

I suspect that modern class 10 are actually fairly good at random access now as well though.

Re: MicroSD Cards for B+ ?

Posted: Wed Dec 17, 2014 10:14 pm
by FTrevorGowen
jamesh wrote: ...
I suspect that modern class 10 are actually fairly good at random access now as well though.
Possibly those marketed as "Ideal for Android ..."? (I have a couple, one's in a tablet, the other was briefly used for a test of NOOBS 1.3.9** but not "run in anger" :) )
Trev.
** Item 'Q' here: http://www.cpmspectrepi.webspace.virgin ... cards.html

Re: MicroSD Cards for B+ ?

Posted: Sat Dec 20, 2014 9:17 am
by Prasaanth.S.P
greetings all,

could someone tell me about the possible microSD cards that are compatible to B+ model

Re: MicroSD Cards for B+ ?

Posted: Sat Dec 20, 2014 3:58 pm
by DougieLawson
Any genuine class 4, 6 or class 10 microSD that's from a reliable source will work. Beware of Chinese fakes from Amazon & eBay.

Class 4 & 6 are better optimised for the way your Raspberry Pi reads, writes and updates files on the filesystem.

Sizes from 4GB (at a push) to 32GB need no special handling. Sizes from 64GB to 512GB need to be reformatted before they can be used.

The RPF pre-loaded NOOBS 8GB card works best because it's insert, boot and go.

Re: MicroSD Cards for B+ ?

Posted: Sat Dec 20, 2014 5:06 pm
by pnelsonsr
I had problems with multiple SanDisk 32GB I purchased and tried. I went with Samsung 16GB 10C microSD and have had no problems

Re: MicroSD Cards for B+ ?

Posted: Sun Dec 21, 2014 9:25 am
by webzterd
I have 2 B+ boards right now for a project, one is using a Toshiba 8GB Class 10 that has 40M read & 10M write minimum speeds.

comparing this to the samsung class 4 I got with the noobs bundle it does out perform it - but only just.

comparison of these against the Verbatim 8GB class 10 SD I have in the older B board they are both faster.

if you were to be doing a tonne of writing to SD for some reason (let's say a video feed buffer just because its something we all probably understand) the higher write speeds of a class 10 will change this but in a typical system your read/write will be more like 70/30 therefore paying attention to that read speed is really important