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CrystalDiskMark

About CrystalDiskMark

CrystalDiskMark is a lightweight storage benchmark for Windows that reports sequential and random read and write speeds in a few clicks.


Standard Edition

Aoi Edition

CrystalDiskMark Aoi edition benchmark results

Shizuku Edition

CrystalDiskMark Shizuku edition benchmark window

System Requirements

OSWindows XP/Vista/7/8/8.1/10/11
Windows Server 2003/2008/2012/2016/2019/2022/2025
Architecture x86/x64/ARM64
  • Installer and x64 version does not support Windows XP/2003 (NT5.x).
  • Not support Windows 95/98/Me/NT4/2000.

Key Features

  • Measure Sequential and Random Performance (Read/Write/Mix)
  • Various measure mode (Peak/Real World/Demo)
  • Many languages support
  • Themes

Important Notice

  • CrystalDiskMark may shorten SSD/USB Memory life.
  • Benchmark result is NOT compatible between different major version.
  • “MB/s” means 1,000,000 byte/sec.
  • The result depends on Test File Size, Test File Position, Fragmentation, IDE(PATA)/SATA/RAID/SCSI/NVMe  controller and CPU speed etc…
  • A part of SSDs depend on test data(random, 0fill).
  • If you execute CrystalDiskMark with Administrator rights, it does not show Network Drive.
    If you would like to measure Network Drive, please run as w/o Administrator rights.
    UAC Dialog: YES -> w/ Administrator Rights, NO -> w/o Administrator Rights

-> FAQ

Unit

  • 1GiB = 1024MiB = 1024x1024KiB = 1024x1024x1024B
  • 1GB = 1000MB = 1000x1000KB = 1000x1000x1000B

Manual

Practical guide to CrystalDiskMark

This independent CrystalDiskMark guide is written for Windows 11 and Windows 10 users who want a clear overview before installing or running the utility. It summarizes the tool’s purpose, supported use cases, edition choices, and the checks worth making before a test.

For consistent results, use the same Windows power plan, close active transfers, and record the selected test settings. Download only the edition you intend to use, verify the publisher information shown by Windows, and retain backups before any storage troubleshooting. Benchmark scores describe a specific workload and should be compared only when the test conditions match.

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