SSD Intel 530 speeds

Discussion in 'MacBook Pro' started by flurescent, Jan 11, 2014.

  1. flurescent macrumors newbie

    Jan 11, 2014
    Hi guys,

    I've just bought SSD Intel 530 120 GB for my macbook pro 13' early 2011, but I get kind of disappointing speeds - 450 for read, which is okay I guess, but only 150 for read, trim enabled.
    Does anybody have any experience with the same SSD? Or with other SSD with the same macbook pro model? Do you have any suggestion how could this be improved?
    I can still return this disk, and get a Samsung 840 for example. Would that be better?

    Thanks for all your answers
  2. ecschwarz macrumors 65816


    Jun 28, 2010
    Not sure why you're running into the speed issues - your computer has SATA III (6Gbps), although I don't have much experience with that drive. If you return it, get the 840 Evo or 840 Pro - you'll get much faster read/write on it.

    I'm getting about 480-500Mbps for both reads and writes on a mid-2012 13" with an 840 Evo as a reference...
  3. alex0002, Jan 12, 2014
    Last edited: Jan 12, 2014

    alex0002 macrumors 6502

    Jun 19, 2013
    New Zealand
    When you say that you are getting these disappointing speeds, is the real world performance suffering or are you running some benchmark program and not getting the numbers that you expect to see?

    Several things to consider here:

    1. SSD makers are moving to 20nm NAND and more NAND pages per chip. For smaller SSDs there are a smaller number of chips per SSD and a smaller number of parallel paths for read/write. This means the small drives are often slower than the larger drives in the same line of SSDs. In 2014, 120GB is considered to be a small SSD.

    2. Perhaps you are using a SSD Benchmark Program (let me guess, the one from Blackmagic design?) that uses compressed data to measure performance. Some drives (like the 530) are using a Sandforce Controller that takes advantage of data compression. If most of your data is text, html, source code, bitmaps or other data that can be easily compressed, the real world performance might be better than the test results. If on the other hand, most of your data is mpeg video, jpeg or other files that are already compressed, then testing with compressed data is a more valid test. But it is possible that Intel uses some mixed data model for testing. Perhaps their site has some info on this, or you can ask on their forums:

    3. In most cases, small file read/write performance is more important than sequential read/write speeds. But most people use the most common speed test available which measures sequential read/write speeds, so often these benchmarks are quite meaningless.

    Most likely you will never notice a difference outside of benchmarking. You could be losing some bragging rights, but very little else. If you wish to replace the Intel 530 with a 'faster' one, it might be good to check the SSD data sheet carefully and perhaps get a larger capacity SSD of at least 240GB or 480GB if these are faster.

    Similar thread here:
  4. alex0002 macrumors 6502

    Jun 19, 2013
    New Zealand
    The first reply from ecschwarz covers this, but the original 840 in the 120GB size would not have faster write speeds than the drive that you have now.

    120GB (MZ-7TD120BW)
    * Sequential READ: up to 530 MB/s
    * Sequential 128KB WRITE: up to 130 MB/s
  5. flurescent thread starter macrumors newbie

    Jan 11, 2014

    Thanks for you reply. So I exchange the Intel for Samsung 840 Evo 120 GB, and it actually did fix my issue. The new SSD is smoothly going writting at 400 mb/s and reading at 500 mb/s, and this is a rather large difference.

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