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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

CrystalDiskMark: structured Windows workflow

This independent CrystalDiskMark reference is designed for Windows users who want reproducible checks rather than an unexplained score. It outlines the utility’s role, edition and compatibility considerations, preparation steps, and the context required to interpret its output responsibly.

Establish a baseline before changing drivers or hardware, then repeat with the same workload and power settings. Close active transfers, note drive temperature and free capacity, and verify the downloaded package and publisher. Performance data and health indicators answer different questions, so neither should be used alone.

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