sh4d0w0lf
Posts: 20
Joined: Thu Jul 28, 2011 9:40 am

Re: 16GB Sandisk Class 10 Sd cards on play.com

Mon Nov 28, 2011 2:09 pm

EDIT: £17.99 - -Today only I think.. the 8GB cards are £5.00
Just a heads up to us Brits as thats the cheapest i\'ve found so far
much faster than the normal SD cards so I\'ve ordered one for the raspi when it comes out.

Damn it i really need to learn to read.. either that or my memory has gotten worse

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FeersumEndjinn
Posts: 148
Joined: Mon Nov 21, 2011 4:02 pm

Re: 16GB Sandisk Class 10 Sd cards on play.com

Mon Nov 28, 2011 2:37 pm

Any chance of a link? searching for \"16Gb Sandisk\" the closest I can find it a MicroSD 16Gb Class 4 - fullsize SD 16Gb Class 4 is £12.29?

Cheers,
FeersumEndjinn
Morrolan / FeersumEndjinn

"And the lord God said unto John, 'Come forth and receive eternal life', but John came fifth and won a toaster."

sh4d0w0lf
Posts: 20
Joined: Thu Jul 28, 2011 9:40 am

Re: 16GB Sandisk Class 10 Sd cards on play.com

Mon Nov 28, 2011 2:43 pm

Link for the 16GB http://www.play.com/Electronics/Electro ... fer=search

Just realised that the 16gb is a class 6 :/ the 8gb is a class 10 though. DOH! sorry folks

Link for the 8GB http://www.play.com/Electronics/Electro ... fer=search

gordan
Posts: 11
Joined: Mon Nov 28, 2011 12:10 pm

Re: 16GB Sandisk Class 10 Sd cards on play.com

Mon Nov 28, 2011 2:48 pm

I suspect he\'s talking about these:
http://www.play.com/Mobiles/Mobile/4-/6 ... fer=search

They are class 4.

You may want to read this first, though:
http://www.raspberrypi.org/forum?mingle ... c&t=1261.1

Getting anything but the fastest possible SD card is going to result in a system that is painfully slow to use.

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FeersumEndjinn
Posts: 148
Joined: Mon Nov 21, 2011 4:02 pm

Re: 16GB Sandisk Class 10 Sd cards on play.com

Mon Nov 28, 2011 3:31 pm

Well I had read that post before, but I was curious regardless :)

Is there a thread which lists benchmarks at all for this kind of use vs use in a camera?
Morrolan / FeersumEndjinn

"And the lord God said unto John, 'Come forth and receive eternal life', but John came fifth and won a toaster."

gordan
Posts: 11
Joined: Mon Nov 28, 2011 12:10 pm

Re: 16GB Sandisk Class 10 Sd cards on play.com

Mon Nov 28, 2011 5:24 pm

I haven\'t bothered publishing my accumulated benchmarks of various cheap flash media (SD cards, CF cards, USB sticks), but since you asked, I might just put something up. Note, however, that the random-write IOPS performance typically varies between 3 (yes, I\'m serious - three) and about 20 for SD cards (SanDisk and Lexar seem to fare reasonably well, and Kingston aren\'t too bad). Some CF cards fare better (e.g. Pretec SLC ones are extremely good and comparable to the performance of a proper SSD, but they are also nearly double the price per GB of a good SATA SSD). USB sticks with a Kinsgon controller are quite good, typically between 100 and 200 random-write IOPS.

Random-read IOPS are generally quite good, typically in the 500-1500 IOPS range (depending on the card), so this isn\'t a problem. It is the random-write IOPS that tend to kill the performance. :-(

With practically every cheap flash device I have seen, the write performance tops out at using 64KB blocks, which usually indicates this is the erase block size. As for tuning, I usually use the following.
mkfs.ext4 -b 4096 -E stripe-width=16 -O ^has_journal
Deadline I/O scheduler also helps a bit because it allows reads to overtake writes.

Or you could just get a USB->SATA adapter and plug a proper SSD into it and be done with it once and for all...

HTH

Steven
Posts: 4
Joined: Fri Nov 18, 2011 9:50 pm

Re: 16GB Sandisk Class 10 Sd cards on play.com

Mon Nov 28, 2011 5:33 pm

Here is a good link to memory cards, and some very good prices at the moment too.

MyMemory Link

I sorted them by class 4 and 16GB and 32GB Cards, as the link above seems to recommend them.

Edit : - Also cheaper then the OP\'s link.

subminiature
Posts: 43
Joined: Wed Nov 02, 2011 6:27 pm
Contact: Website

Re: 16GB Sandisk Class 10 Sd cards on play.com

Mon Nov 28, 2011 9:21 pm

http://www.mymemory.co.uk/SDHC/MyMemory ... Newsletter
£19.99 for a 32Gb class 10 card limited time only - however these turn up every few weeks. I use these in a Nokia. Next year the 64Gb SD cards will be this kind of money.

aeiah
Posts: 24
Joined: Tue Nov 08, 2011 2:00 pm

Re: 16GB Sandisk Class 10 Sd cards on play.com

Tue Nov 29, 2011 5:26 pm

play.com managed to send me the wrong class of card twice in a row last year. make sure you read what it says on the card when you receive it, because i dont think the packers in the warehouse do...

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Montekuri
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Re: 16GB Sandisk Class 10 Sd cards on play.com

Tue Nov 29, 2011 6:01 pm

Before buy a SD card, read this topic:
- Should I be able to boot off a 16GB SDHC?


Artum
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Joined: Fri Sep 09, 2011 1:00 pm

Re: 16GB Sandisk Class 10 Sd cards on play.com

Tue Nov 29, 2011 6:43 pm

Here\'s the same card, cheaper, from Amazon (US).

http://www.amazon.com/SanDisk-Extreme-F ... 989&sr=1-7

Edit:
Never mind, no free shipping option with it. Even so, if you live in the US, Amazon has the better price.

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