MacBook Air 2012 SSD Performance Up to 217% Faster Than MacBook Air 2011

Jun 19, 2012 - 37 Comments

MacBook Air 2012 SSD Benchmarks

The MacBook Air 2012 is a screamer, and though the CPU-based benchmarks show about a 15-20% improvement over the MacBook Air 2011 models, by far the biggest performance boost comes from the new flash memory (SSD) that Apple is using for storage on the 2012 models. In our tests, the disk used in the newest MacBook Air models is up to 217% faster than the previous model years drives.

MacBook Air 2012 SSD: writes at 364MB/sec, reads at 461MB/sec

MacBook Air 2011 SSD: writes at 152MB/sec, reads at 145MB/sec

MacBook Air 2010 SSD: writes at 157MB/sec, reads at 188MB/sec

It is difficult to convey just how fast the newest MacBook Air is, but it’s safe to say the performance is extremely impressive and I haven’t ever used a laptop that feels faster. You can attribute that to the ultraquick flash storage.

Interestingly, the SSD tested within the MBA 2012 is the TS128E model, a Toshiba drive. The SSD tested with the MBA 2011 and 2010 models are Samsung. You may recall that Apple also ships faster Samsung drives in some MacBook Airs, that appears to still be going on with the 2012 updates which suggests the tested Toshiba flash drive is probably slightly slower than a Samsung model, though the performance difference between the two drives is likely to be completely negligible at this point.

All read and write speeds were benchmarked with DiskSpeedTest, a free disk testing app available from the Mac App Store.


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Posted by: AJ in Hardware, Mac, News


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  1. Here’s what I get on my 2011 11″ macbook air, drive’s a stock 128gb SSD

  2. Andrei says:

    Can anyone tell me whether they have some sort of daemon workaround for the situation when the whole disc gets full and you need to write over a previously written area? You all know (i suppose) the major SSD flaw is that you will be enjoying that speed only until the last byte of that SSD has been written to, after which time major slowdowns will occur. Dig into it to find out more and for those of you who have SSD macs for over a year and using the file system extensively please share with the rest of us a benchmark result. If let’s say the read / write speeds drop in half, that’s still better then any HDD, but from what I read, the speed drops to about a mid range HDD. Now most of these tests were either performed on winblows or Linux, where I’m pretty sure no one had the time (to market) to supply a workaround(kernel patch/daemon/windows special driver). However, I think Apple might have addressed this issue in the OS (perhaps with a kernel module to optimize/wipe data preemptively or something), seen as how much more attention they pay to details, in which case I could enjoy this speed all the time. I need to buy a mac and I’m thinking Air especially for SSD speed, if and only if this speed does not drop too much in time.

    • AJ says:

      I’ve had a MacBook Air since 2010 with an SSD, hasn’t slowed down at all. Yes they degrade over time, but if you plan to upgrade the machine every 3-5 years you will probably never notice the speed drop.

      • Andrei says:


        After all, no matter what CPU you have, if you don’t plan on simulating out galaxy particle by particle or to transcode full HD movies or something, the Air CPU is more then enough. I’m a developer working with lots of CPU intensive stuff and I can tell you the hard drive is the bottleneck, while the CPU is idling most of the time.

        PS: For those of you thinking that the standard SSD might too small, there are firms out there that will sell you a disk (made especially to fit in the MacBook Air) and the screwdrivers needed to change it. Not sure if they work on the 2012 version but if you’re out of warranty why not? I’ve seen the videos and there’s nothing to break in the process. Some brands also claim even faster speeds, for the 2011 Air at least.
        Any of you replaced the stock disk with one of those?

  3. Nox says:

    A request.. Anyone with a 13 inch 2012 Ivy bridge MBA with Toshiba SSD, can you please post your read/write speeds… I’m planning to purchase the base model but all the 13 inch base MBA’s I’ve checked at the apple stores have a Toshiba SSD.. Thanks in anticipation!!

  4. MacBookAirPlane says:

    My 2011 Macbook Air reads and writes at around 250MBs. I am running the exact same software as these tests. Anyone have any ideas as to why this is?

  5. First says:

    I let the Speed Test ran a couple of times (around 20), I thought it would turn off by itself. At first I got speed at around 360/460, but now I only get 160/380!

    Have I ruined my SSD, which is a Toshiba btw?

  6. smoothdvd says:

    You’re wrong, the 2011 Macbook Air with slow SSD which brand is Toshiba

  7. Jamshid says:

    Darn, my early 2011 Macbook Pro with 500GB SSD came with a Toshiba “APPLE SSD TS512C”. Always seemed fast to me, but apparently it is relatively slow: 130MB/s writes, 190MB/s reads (on Lion, didn’t measure under SL).

    I bought AppleCare, I wonder if there’s any way to get them to swap in the 2x faster 2012 SSD drive.

  8. ehutchins says:

    Ok. Now I’m impressed!

    Here’s my new 2012 i7 MBP 15″ w/Retina Display. ;)

  9. Daniel says:

    For comparison, my (aftermarket) OCZ VERTEX3 did 152 MB/s read and 512 MB/s write max on DiskSpeedTest:

  10. Wow, compare that to my MBP I7 2010 – Read 56MB/s and Write 64MB/s. Don’t know if thats normal for non-flash storage or not.

    Can’t wait to see the speeds on the Retina MBP!

  11. forka2k says:

    I have MBA 2011 and this is what I get:

  12. AirBoy says:

    How come my 2012 Air gets ~260MB/s write & ~440MB/s read? What should I do?

    Spec: 13″ i5-1.8, 128GB SSD, 8GB Ram

    • AJ says:

      Did you let the full test run or just the first tests in DiskTest? 260/440 is extremely fast, I wouldn’t worry about it.

      You can check the manufacturer of your SSD by going to  -> About This Mac > More Info > System Report -> Serial-ATA, it will say something like “APPLE SSD TS128E” or “APPLE SSD SM128” etc.

      • AirBoy says:

        260/440 is not extremely fast, seriously!

        My zenbook (1st gen, sandy bridge), it had about 375write/500read with the slower Sandisk. If you are luck to have ADATA, it can run about 420+/550.

        As apple said, they will put the new series of SSD can read close to 500MB/s on the models of 2012, but the fact is not that close. I saw other folks doing the speed test around the internet, overall the reading speed test results are within 420-460MB/s, never see any more close to 500MB/s.

        Looking for the faster SSD on the Air, is the only reason getting me to buy, however, it is pretty disappointed. I am not talking about the CPU, not talking the keyboard, not else. Just talking about the SSD.

        P.S. I do agree the Macbook Air is a great machine, but the SSD is still running slow by today’s standard (Mid-2012), comparing the most up-to-day SSDs.

    • SteveNYC says:

      I’m getting 405.0 MB/s write and 442.4 MB/s read on my 2012 13″ MBA i7-2.0, 256GB SSD, 8GB RAM. SSD is “APPLE SSD SM256E”.

      Lovin’ it.

    • Artyom Brazelman says:

      Well, honestly, just because your specs are a tad lower than the pictured one doesn’t heed worrying.

    • PlayfullyEvil says:

      Z0M6Z !!! My SSD is ~60MB/s slower “comparing the most up-to-day SSDs”. What should I do?!? 11!!11

      Seriously? you’re going to complain about 60MB/s throughput as compared to the previous generation MBA’s SSD? I say return it explaining that the SSD is too slow then they claimed it is supposed to do; despite the fact that the claim is vague with an “up to” statement. Hell forget that, just donate it to someone who’ll appreciate the device more who cares less about the bandwidth numbers, so long as it performs substantially better then the previous generation MBA!

      I sure as hell wouldn’t be complaining with the 260/440 numbers. And yes, it IS “extremely fast”; even with the ~60MB/s discrepancy. Apple never advertised the throughput for their drives except for this:
      [quote] this next-generation flash storage is up to 4x faster than a traditional 5400-rpm notebook hard drive and faster than the previous-generation MacBook Air.2 …

      Testing conducted by Apple in May 2012 using preproduction 1.7GHz dual-core Intel Core i5-based 11-inch MacBook Air units with 128GB of flash storage and preproduction 1.8GHz dual-core Intel Core i5-based 13-inch MacBook Air units with 256GB of flash storage. 1.6GHz dual-core Intel Core i5-based 11-inch MacBook Air units with 128GB of flash storage and 1.7GHz dual-core Intel Core i5-based 13-inch MacBook Air systems with 256GB of flash storage were production units. 750GB 5400-rpm hard drive was tested using production 2.4GHz quad-core Intel Core i7-based 15-inch MacBook Pro systems. All units were configured with 4GB of RAM. Testing conducted using Iometer 2006.07.27 with a 30-second ramp-up, 5-minute run duration, 512KB request size and 8 outstanding IOs. 11-inch MacBook Air test file size = 100GB; all other systems test file size = 150GB. Average rotational media performance calculated by creating the test file on the outer, middle and inner sectors of the drive and averaging the results from all three measurements. MacBook Air continuously monitors system thermal and power conditions, and may adjust performance as needed to maintain optimal system operation.[/QUOTE]

      Are you really going to nitpick over the ~60MB/s? A pedantic overstatement of a reason why one would want to buy the recent MBA generation, no? I’ll do what tech journalist have done; that’s quote and regurgitate what has been posted on Anandtech’s site:
      [QUOTE]”Apple claims the new SSD is capable of up to 500MB/s read performance. I ran a few tests using Quick Bench to validate Apple’s claims. In general it looks like read speed approaches 500MB/s, while sequential writes are closer to 400MB/s.”[/QUOTE]
      You asked what you should so?Well, you can opt to do what every other whiner does, sue Apple. Because apparently they haven’t fulfilled what they claimed.

      There is no indication of whom at Apple that quote was from. The WWDC Keynote even fails to state any bandwidth numbers, save for the Promise TB drive. So, to state that “Looking for the faster SSD on the Air, is the only reason getting me to buy” effectively basing it on unsubstantiated claims by Apple is frivolous.

      Sorry to sound like an A-hols, but why can’t people stop whining about sh!t?!?
      It’s so much better then the previous gen MBA as Apple has advertised.

      • AirBoy says:

        SSDs insider the 2012 Macbook Air, APPLE said “that is OVER 500MB/s read speed”

        “”effectively basing it on unsubstantiated claims by Apple is frivolous.””

        Just want to show, how I got the information directly from APPLE.


        • PlayfullyEvil says:

          I stand corrected and apologize. I still think it’s rather frivolous to nitpick. Personally, I’d still be happy with 460MB/s reads.

          Best case scenario, Apple with issue a firmware update to address “the problem”, if you can call it that. /shrugs

          • Bob says:

            Why pay for a premium device to get a sub premium experience. If your new BMW was 15% slower than everyone else’s I’m pretty sure you would be pissed.

            He’s right to be annoyed.

  13. Paul says:

    I guess they make up for the slower processor with the faster SSD…

    • AJ says:

      The processor is 15-20% faster as well, where did you get the idea it’s slower?

      • Paul says:

        The processor is faster than previous Airs but I thought they were significantly slower than those in iMacs and MacBook Pros ?

        • Artyom Brazelman says:

          What do you expect? With the MacBook Air, you’re trading in high performance for portability. Of course they’re not going to be as fast an iMac or MacBook Pro.

        • Kent says:

          Shouldn’t call it slow. With the CPUs these days, opening say, “Pages”, its probably the MacBook Air that is going to be faster, or if it had a HDD, at least equal in speed. But say, rendering a video, the MacBook Pro is going to get more work done in the same amount of time, because it has 2 more cores to do the work. Speeds of single thread tasks does’t get affected by CPU stats (not much), really its the performance (Horsepower) that is changed.

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