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AmorphousDiskMark 1.2.3

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  • Date: October 22, 2019
  • OS: macOS 10.8.5 or later
  • License: Free
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Got a USB flash drive?

AmorphousDiskMark measures storage read/write performance in MB/s and IOPS.

  • Sequential 128 KiB block read/write tests with Queue Depth=1, 2, 4, 8, 16, 32, 64, 128, 256, 512, or 1024
  • Random sequence 4 KiB block read/write tests with Queue Depth=1, 2, 4, 8, 16, 32, 64, 128, 256, 512, or 1024
  • Sequential 1 MiB block read/write tests
  • Random sequence 4 KiB block read/write tests
  • Read/write MB/s scores
  • Read/write IOPS scores in tooltip
  • Test data: random or zero
  • Test size: 50 MiB, 100 MiB, 500 MiB, 1 GiB, 2 GiB, 4 GiB, 8 GiB, 16 GiB, or 32 GiB
  • Test interval: 0 seconds, ..., 10 minutes

NOTE: Please do not repeat the read/write tests unnecessarily. Repeating read/write tests may shorten the lifespan of your storage device.


MB/s: megabytes per second: 1,000,000 bytes per second

IOPS: input/output operations per second

KiB: Kibibytes: 1,024 bytes

MiB: Mebibytes: 1,024 x 1,024 bytes: 1,048,576 bytes

GiB: Gibibytes: 1,024 x 1,024 x 1,024 bytes: 1,073,741,824 bytes

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Instructions:

  • Choose the target volume from the volume selection popup button at the top right corner in the AmorphousDiskMark window.
  • Click the “All” button.
  • When the test is finished, press command - S to save a screenshot of the AmorphousDiskMark window.
  • Write an Amazon review of your storage device, and attach the screenshot if you like.

A permission was given by the author of CrystalDiskMark to use the identical or similar user interface in this app. Blog by CrystalDiskMark author.


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amorphousdiskmark screenshot
AmorphousDiskMark screenshot


amorphousdiskmark saved score image
AmorphousDiskMark saved score image


amorphousdiskmark saved score image
AmorphousDiskMark volume popup button menu item tooltip


amorphousdiskmark saved score image
AmorphousDiskMark IOPS tooltip
-----------------------------------------------------------------------
AmorphousDiskMark 1.2.2 (C) 2016-2019 Katsura Shareware
                       Katsura Shareware : http://katsurashareware.com/
-----------------------------------------------------------------------
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1,000 bytes, KiB = 1,024 bytes

  Sequential Read 128KiB (QD=  32) :   507.8 MB/s [   3874.5 IOPS]
 Sequential Write 128KiB (QD=  32) :   370.1 MB/s [   2823.3 IOPS]
        Random Read 4KiB (QD=  32) :   264.6 MB/s [  64600.4 IOPS]
       Random Write 4KiB (QD=  32) :    41.9 MB/s [  10227.1 IOPS]
       Sequential Read 1MiB (QD=1) :   391.1 MB/s [    373.0 IOPS]
      Sequential Write 1MiB (QD=1) :   362.2 MB/s [    345.4 IOPS]
           Random Read 4KiB (QD=1) :    15.8 MB/s [   3867.0 IOPS]
          Random Write 4KiB (QD=1) :    48.1 MB/s [  11735.3 IOPS]

    Test : 500 MiB  (x1)  [Interval=3 sec]
  Volume : Macintosh HD: 48% used (17/37 GiB)
  Device : APPLE SSD SM256E
    Date : 2019-10-21T21:44:19Z
      OS : macOS 10.14.6 18G103
				
You can also copy/paste the measurements in text.

Copyright © 2019 Katsura Shareware. All rights reserved.