CrystalDiskMark – A disk benchmark software

CrystalDiskMark is designed to quickly test the performance of your hard drives. Currently, the program allows to measure sequential and random read/write speeds.


Key Features

  • Measure sequential reads/writes speed
  • Measure random 512KB, 4KB, 4KB (Queue Depth=32) reads/writes speed
  • Select test data (Random, 0Fill, 1Fill)
  • Theme support
  • Multi-Language support

Important Notice

  • 4K QD32 write test may conflict with Norton and Avira security software, so please stop real time scanner before runnning test temporarily.
  • “MB/s” means 1,000,000 byte/sec.
  • The result depends on Test File Size, Test File Position, Fragmentation, IDE(PATA)/SATA/RAID/SCSI controller and CPU speed etc…
  • In a part of SSD, the result depends on test data(random, 0fill, 1fill).

Operating Envrionment

Windows IE Limitation
2000 6.0
XP 7.0~
Server 2003 7.0~
Vista 7.0~
Server 2008 7.0~ Does not work well on Server Core mode.
7 8.0~
8 10.0~
Server 2012 10.0~ Does not work well on Server Core mode.

IE8 or later is strictly recommended.

DOWNLOAD CrystalDiskinfo


  • During installation it will ask to install detla toolbar. Select custom install and un-tick all the options.


CRYSTAL DISK MARK_001_05072013_220859


  • This is the main interface.

CRYSTAL DISK MARK_002_05072013_221001


  • Lets you choose what will be in test data. Random, only zeroes or only ones.

CRYSTAL DISK MARK_003_05072013_221010


  • Copy the test result in clipboard.

CRYSTAL DISK MARK_004_05072013_221018

  • Theme options


CRYSTAL DISK MARK_005_05072013_221024

  • Help


CRYSTAL DISK MARK_006_05072013_221040


  • Hard disk benchmark was run. results shown.

CRYSTAL DISK MARK_007_05072013_221336

  • Number 1 to 9 are the number of times the test will run.


CRYSTAL DISK MARK_008_05072013_221352


  • Test data size.

CRYSTAL DISK MARK_009_05072013_221408


  • Select the disk drive which will be benchmarked.

CRYSTAL DISK MARK_010_05072013_221411