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AmorphousDiskMark 2.5

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  • Date: February 10, 2020
  • OS: macOS 10.8.5 or later
  • License: Free
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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 or IOPS scores in the main window
  • Read/write MB/s and IOPS scores in tooltip
  • Test data: random or zero
  • Test size: 16 MiB, 32 MiB, 64 MiB, 128 MiB, 256 MiB, 512 MiB, 1 GiB, 2 GiB, 4 GiB, 8 GiB, 16 GiB, 32 GiB, or 64 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.

mbps score image
MB/s score image


iops score image
IOPS score image


disk info tooltip image
volume selection popup button menu item tooltip


score tooltip image
MB/s and IOPS measurement result tooltip
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AmorphousDiskMark 2.5 (C) 2016-2020 Katsura Shareware
                       Katsura Shareware : http://katsurashareware.com/
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* 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) :   816.36 MB/s [   6228.3 IOPS]
 Sequential Write 128KiB (QD=  32) :   708.74 MB/s [   5407.2 IOPS]
        Random Read 4KiB (QD=  32) :   507.21 MB/s [ 123831.4 IOPS]
       Random Write 4KiB (QD=  32) :    29.81 MB/s [   7279.0 IOPS]
       Sequential Read 1MiB (QD=1) :   563.84 MB/s [    537.7 IOPS]
      Sequential Write 1MiB (QD=1) :   493.87 MB/s [    471.0 IOPS]
           Random Read 4KiB (QD=1) :    26.56 MB/s [   6483.4 IOPS]
          Random Write 4KiB (QD=1) :    63.15 MB/s [  15416.9 IOPS]

    Test : 512 MiB  (x1)  [Interval=3 sec]
  Volume : Macintosh HD: 71% used (326/465 GiB)
  Device : APPLE SSD SM0512F
    Date : 2020-02-10T17:14:16Z
      OS : macOS 10.14.6 18G1012
				
You can also copy/paste the measurements as text.

Copyright © 2016-2020 Katsura Shareware. All rights reserved.