Register FAQ / Rules Forum Spy Search Today's Posts Mark Forums Read
Go Back   MacRumors Forums > Apple Hardware > Notebooks > MacBook Air

Reply
 
Thread Tools Search this Thread Display Modes
Old Jul 20, 2011, 12:48 PM   #1
wdaleherring
Banned
 
Join Date: Jul 2011
Can an SD card stand to be constantly used, as if it were an SSD

I will be getting a 13 MBA and actually didn't realize how much more it was for only double the storage. Anyway, I was thinking about ordering a 64GB SD card (for about $90 on Amazon) and just "permanently" sticking that in there to store my iTunes and such... do you think it could handle the constant use?
wdaleherring is offline   0 Reply With Quote
Old Jul 20, 2011, 12:57 PM   #2
peskaa
macrumors 68020
 
peskaa's Avatar
 
Join Date: Mar 2008
Location: London, UK
Yes, it will handle it, but 1) the SD card will be sticking out the whole time and 2) SD cards aren't that fast, nowhere near as much as a true SSD (SanDisk do up to about 40MB/s)
__________________
rMBP 15"(2012) 2.3 i7 | 16GB | 256GB | 650M
iMac 27"(2011) 3.1 i5 | 8GB | 1TB | 6970M
DS211j 2x2TB
peskaa is offline   0 Reply With Quote
Old Jul 20, 2011, 01:00 PM   #3
wdaleherring
Thread Starter
Banned
 
Join Date: Jul 2011
Quote:
Originally Posted by peskaa View Post
Yes, it will handle it, but 1) the SD card will be sticking out the whole time and 2) SD cards aren't that fast, nowhere near as much as a true SSD (SanDisk do up to about 40MB/s)
As long as it can perform as fast a an HDD I'll be good... (does it?) And damn, really? I've never messed with the Airs so I didn't know that it stuck out and didn't go flush. Hmmm....
wdaleherring is offline   0 Reply With Quote
Old Jul 20, 2011, 01:04 PM   #4
Beaverman3001
macrumors 6502
 
Join Date: May 2010
Not even close to being flush unfortunately.
Beaverman3001 is offline   1 Reply With Quote
Old Jul 20, 2011, 01:06 PM   #5
sparkie7
macrumors 68000
 
sparkie7's Avatar
 
Join Date: Oct 2008
Quote:
Originally Posted by peskaa View Post
Yes, it will handle it, but 1) the SD card will be sticking out the whole time and 2) SD cards aren't that fast, nowhere near as much as a true SSD (SanDisk do up to about 40MB/s)
Delkin do 80/90MB/s SDHC cards
sparkie7 is offline   0 Reply With Quote
Old Jul 20, 2011, 01:07 PM   #6
wdaleherring
Thread Starter
Banned
 
Join Date: Jul 2011
Quote:
Originally Posted by sparkie7 View Post
Delkin do 80/90MB/s SDHC cards
What does the average HDD read/write at?

Quote:
Originally Posted by Beaverman3001 View Post
Not even close to being flush unfortunately.
HUGE bummer. Man... I really don't want to fork over $300 more for the 256...
wdaleherring is offline   0 Reply With Quote
Old Jul 20, 2011, 01:20 PM   #7
peskaa
macrumors 68020
 
peskaa's Avatar
 
Join Date: Mar 2008
Location: London, UK
[QUOTE=wdaleherring;12982512]What does the average HDD read/write at?[QUOTE]

Circa 80-110MB/s, depending on the drive, file etc. Laptop drives a bit slower. So even if you do pick up a top end SDHC card you won't be hitting those speeds.

You could use an SD card for storing something like an iTunes library, documents etc., namely things that don't need the fastest speeds.
__________________
rMBP 15"(2012) 2.3 i7 | 16GB | 256GB | 650M
iMac 27"(2011) 3.1 i5 | 8GB | 1TB | 6970M
DS211j 2x2TB
peskaa is offline   0 Reply With Quote
Old Jul 20, 2011, 01:22 PM   #8
wdaleherring
Thread Starter
Banned
 
Join Date: Jul 2011
Quote:
Originally Posted by peskaa View Post
Quote:
Originally Posted by wdaleherring View Post
What does the average HDD read/write at?
Circa 80-110MB/s, depending on the drive, file etc. Laptop drives a bit slower. So even if you do pick up a top end SDHC card you won't be hitting those speeds.

You could use an SD card for storing something like an iTunes library, documents etc., namely things that don't need the fastest speeds.
How do you think that would work with my AppleTV streaming from it?
wdaleherring is offline   0 Reply With Quote
Old Jul 20, 2011, 01:24 PM   #9
peskaa
macrumors 68020
 
peskaa's Avatar
 
Join Date: Mar 2008
Location: London, UK
Quote:
Originally Posted by wdaleherring View Post
How do you think that would work with my AppleTV streaming from it?
I'd hazard not too well, but depends on the content you're streaming. You'd be better off with a small external HD.
__________________
rMBP 15"(2012) 2.3 i7 | 16GB | 256GB | 650M
iMac 27"(2011) 3.1 i5 | 8GB | 1TB | 6970M
DS211j 2x2TB
peskaa is offline   0 Reply With Quote
Old Jul 20, 2011, 01:26 PM   #10
Philflow
macrumors 65816
 
Join Date: May 2008
Bigger SSDs last longer and perform better than smaller ones.

On top of that SSDs tend to get slower as free space runs out.

Might be worth it to get the 256GB.
Philflow is offline   0 Reply With Quote
Old Jul 20, 2011, 01:27 PM   #11
Duke15
macrumors 6502
 
Join Date: May 2011
Location: Canada
Where did you see a 64gb SD card for 100$ wouldnt mind picking one up?
Duke15 is offline   0 Reply With Quote
Old Jul 20, 2011, 01:34 PM   #12
stevenpa
macrumors 6502
 
Join Date: Jun 2011
A few issues with SD cards.


-Reliability - Memory cards fail at a pretty high rate

-Speed- Even a class 10 card will be slow if you have it almost filled up, no cache or anything on them.

-Like others said, it will stick out



Just get an external for much less money that will be faster and much more reliable.
stevenpa is offline   1 Reply With Quote
Old Jul 20, 2011, 01:37 PM   #13
wdaleherring
Thread Starter
Banned
 
Join Date: Jul 2011
Quote:
Originally Posted by Duke15 View Post
Where did you see a 64gb SD card for 100$ wouldnt mind picking one up?

Amazon, I didn't go looking for it, I just linked you to the search. Laziness at its best.
wdaleherring is offline   0 Reply With Quote
Old Jul 20, 2011, 01:38 PM   #14
wdaleherring
Thread Starter
Banned
 
Join Date: Jul 2011
Edit: Oops! Double post. Ban me now.

Well this really sucks.

I'm not too familiar with SSDs as I've never had a machine with one. So does this mean that if my drive (the MBA one) is 80% full, it will start running slower?
wdaleherring is offline   0 Reply With Quote
Old Jul 20, 2011, 01:42 PM   #15
stevenpa
macrumors 6502
 
Join Date: Jun 2011
Quote:
Originally Posted by wdaleherring View Post
Edit: Oops! Double post. Ban me now.

Well this really sucks.

I'm not too familiar with SSDs as I've never had a machine with one. So does this mean that if my drive (the MBA one) is 80% full, it will start running slower?
A little bit but not that much. TRIM support helps.
stevenpa is offline   0 Reply With Quote
Old Jul 20, 2011, 01:59 PM   #16
Duke15
macrumors 6502
 
Join Date: May 2011
Location: Canada
Quote:
Originally Posted by wdaleherring View Post
Amazon, I didn't go looking for it, I just linked you to the search. Laziness at its best.
Awesome thanks, hopefully its the same price in Canada
Duke15 is offline   0 Reply With Quote
Old Nov 16, 2012, 10:59 AM   #17
fixitgood
macrumors newbie
 
Join Date: May 2012
Speed test of SD card in MacBook Air

My mid-2011 MacBook Air recognizes and uses a Komputerbay 64 GB SDXC card just fine. It's a $54 class 10 card from Amazon (http://www.amazon.com/gp/product/B008AN1DHI) and I formatted it Mac OS Extended (Journaled). However, I only get read speeds around 33 MB/s and write speeds around 15 MB/s from this card.
fixitgood is offline   0 Reply With Quote
Old Nov 16, 2012, 11:11 AM   #18
dezeeb
macrumors newbie
 
Join Date: Apr 2008
Location: Manchester, UK
There was a recent Kickstarter campaign for this: http://theniftyminidrive.com

They've not sent the rewards out yet so I'm not sure how well it actually performs but this would be a perfect solution for you when they actually ship.
dezeeb is offline   0 Reply With Quote
Old Nov 16, 2012, 11:15 AM   #19
Orange Crane
macrumors 6502
 
Join Date: Jul 2012
SD cards are terribly unreliable. Make sure you have backups of whatever data you're doing this with.
Orange Crane is offline   0 Reply With Quote
Old Nov 16, 2012, 11:52 AM   #20
Acorn
macrumors 68020
 
Acorn's Avatar
 
Join Date: Jan 2009
Location: Fangorn Forest
I tried this with a netbook I had and the speed was horrible. It was a class 10 card but it still was slower then molasses. never ever again will I waste my time with that.
__________________
o/
Acorn is offline   0 Reply With Quote
Old Nov 16, 2012, 12:11 PM   #21
dcorban
macrumors 6502a
 
Join Date: Oct 2007
Quote:
Originally Posted by Orange Crane View Post
SD cards are terribly unreliable. Make sure you have backups of whatever data you're doing this with.
I haven't found this to be true at all, and I have extensively used SD cards for years. However, I have always used Sandisk brand cards. I am well aware that many of the lower priced, off-brand cards have a high rate of data loss and almost never perform to their rated speed.

To respond to the OP, an SD card will not be a good replacement for larger internal storage if you are truly accessing over 128GB of data on a frequent basis. Personally, I moved a few dozen GB of infrequently used documents and files to an SD card, allowing me to use the default 128GB drive and still have 40GB free space. This is with a 40GB music library, 15GB photo library, and 10GB of video.
__________________
The Americans can always be trusted to do the right thing, once all other possibilities have been exhausted.
dcorban is offline   0 Reply With Quote
Old Nov 16, 2012, 02:04 PM   #22
Penn Jennings
macrumors 6502
 
Join Date: Apr 2010
Location: Michigan
Quote:
Originally Posted by wdaleherring View Post
What does the average HDD read/write at?



HUGE bummer. Man... I really don't want to fork over $300 more for the 256...
A typical 2.5 HDD will do 80-95 MB reads and writes (actual). At least thats what I see with my 2010 MBP 13 and 2011 MBP 15, both with 7500 RPM drives.

----------

Quote:
Originally Posted by stevenpa View Post
A little bit but not that much. TRIM support helps.
I don't TRIM is necessary as it once was.

----------

Quote:
Originally Posted by wdaleherring View Post
I will be getting a 13 MBA and actually didn't realize how much more it was for only double the storage. Anyway, I was thinking about ordering a 64GB SD card (for about $90 on Amazon) and just "permanently" sticking that in there to store my iTunes and such... do you think it could handle the constant use?
You PROBABLY don't need blazing performance for iTunes if you are just playing movies and music. A fast SD should work fine for speed. I'd be more concerned reliability the physical aspects of this solution. I think that the solution should work fine.

Be sure that you are using time machine and that the SD is included in the backups. As long you backup regularly you risk is pretty low.

Give a shot, what do you have to lose. If it doesn't work, send the SD back. :-)
Penn Jennings is offline   0 Reply With Quote

Reply
MacRumors Forums > Apple Hardware > Notebooks > MacBook Air

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Similar Threads
thread Thread Starter Forum Replies Last Post
Mid 2009 2.53 Ghz MBP beachballs constantly. Quicker fix: RAM or SSD? reubs MacBook Pro 18 May 3, 2014 05:19 AM
SSD flash card on iMac 27, 2013 Xer iMac 1 Jan 29, 2014 01:26 PM
2012 mac pro PCIe SSD card SATA6 SSD ? joecool99 Mac Pro 7 Oct 21, 2013 05:45 AM
iPad: Good Stand-Alone Stand Options for New iPad JonathanWarrick iPad Accessories 1 Feb 28, 2013 09:26 AM

Forum Jump

All times are GMT -5. The time now is 01:23 PM.

Mac Rumors | Mac | iPhone | iPhone Game Reviews | iPhone Apps

Mobile Version | Fixed | Fluid | Fluid HD
Copyright 2002-2013, MacRumors.com, LLC