SD expansion card

Samtb

macrumors 65816
Original poster
Jan 6, 2013
1,387
18
Is there any significant disadvantage to buying a 128gb model and an SD memory expansion card?
 

zerocool42

macrumors newbie
Apr 1, 2013
15
0
Performance and reliability are the two main concerns.

Performance of the sdcard is much much less than the internal SSD. I used mine for running low activity VMs where performance didn't matter to me.

An sdcard also doesn't have the same level of garbage collection, wear leveling, or trim support that a proper ssd has so the chance of failure could be higher. I wouldn't rely on one to store anything important that isn't backed up.
 

Samuelsan2001

macrumors 604
Oct 24, 2013
7,682
2,103
This

Performance and reliability are the two main concerns.

Performance of the sdcard is much much less than the internal SSD. I used mine for running low activity VMs where performance didn't matter to me.

An sdcard also doesn't have the same level of garbage collection, wear leveling, or trim support that a proper ssd has so the chance of failure could be higher. I wouldn't rely on one to store anything important that isn't backed up.
They also have problems with waking from sleep and staying mounted sometimes.
 

newellj

macrumors 604
Oct 15, 2014
7,288
2,303
East of Eden
I could be wrong, but I think I remember that the computer may not actually fully go into sleep mode with the card in the reader?
 

capitanbuzo

macrumors 65816
Jul 17, 2007
1,117
127
I'm reviving an old thread here but what are people's experience with Nifty's sleep/wake issues? I'm debating getting one for my new rMBP to keep my iTunes library on. I already have an external SSD but I'd like to keep some things with me for convenience (and not juggling my four external drives).
 
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nohoch

macrumors member
Oct 17, 2011
38
2
I'm reviving an old thread here but what are people's experience with Nifty's sleep/wake issues? I'm debating getting one for my new rMBP to keep my iTunes library on. I already have an external SSD but I'd like to keep some things with me for convenience (and not juggling my four external drives).
Ditto wondering the same thing, I have a 64gb card laying around and contemplating the nifty for non-critical storage and convenience, trying to determined if its worth the $40
 

mac8867

macrumors 6502
Apr 5, 2010
457
22
Saint Augustine, FL
Well, I put a Transcend 128 in my GF's macbook air, moved her home directory to it (iTunes Lib and all)... and she has been running that way for over a year without any issues.
 

abta1

macrumors 6502
Jul 5, 2010
334
11
Paris, France
I have the Nifty mini drive with a 128Gb Sandisk micro SD card. In terms of read/write speed, obviously it is significantly slower than the SSD. I couldn't even store my photos library on there and view them without noticeable delay when loading them. But for infrequent access storage, it's fine.

Regarding the Nifty mini drive, mine did not fit into the SD card slot of my 2015 13" MBA and I had to cut down one of the protruding plastic ridges, and even then it was a tight fit that sits slightly to one side of the slot.