使い方 CrystalDiskMark

Installation

You can use either the ZIP (portable) or Installer version. Both are available on the ダウンロード page.

• ZIP: Unzip the file to any folder. To update, unzip over the previous installation. No installer runs; just open the executable from the folder.
• Installer: Run the installer and follow the steps. To uninstall, go to Settings → Apps (or Add or Remove Programs) and remove CrystalDiskMark.

How to Start a Benchmark

1. Select Number of Test Runs (1–9; default is 5 in v9).
2. Select Test Size (e.g. 16MiB … 64GiB; default 1GiB). Use smaller sizes for slow/USB drives.
3. Select Test Drive (C:\, D:\, etc.). For network drives, run CrystalDiskMark as a standard user (UAC: No).
4. Click All to run all tests, or a specific test button.

メインウィンドウ: add images/CDM9デフォルト-en-1.png

Main Window Options

• Number of Test: 1–9. デフォルト in v9 is 3.
• Test Size: 16MiB, 32MiB, 64MiB, 128MiB, 256MiB, 512MiB, 1GiB, 2GiB, 4GiB, 8GiB, 16GiB, 32GiB, 64GiB.
• Test Drive: Any local or network drive (network requires no admin).
• Test Unit: MB/s, GB/s, IOPS, or μs (average latency).

Block size, queue, and thread settings are in Settings → Settings.

File Menu

• Copy — Copy benchmark result to clipboard.
• Save (text) — Save result as UTF-16LE text file.
• Save (image) — Save as PNG, JPEG, or BMP.
• Exit — Close the application.

Settings & Test Data

Test data: All 0x00 (0 Fill) or Random. On some SSDs, results can differ between the two.

Profiles

Profile menu: デフォルト, ピークパフォーマンス, リアルワールド Performance, Demo. Standard edition also has [+Mix] variants (read/write mix).