CrystalDiskMark Portable 8.0.4a

January 13, 2026

Additional Information

CrystalDiskMark Portable is a free disk benchmark tool that measures the real read and write speed of hard drives, SSDs, and USB storage

Version	CrystalDiskMark Portable 8.0.4c
Requirements	Windows XP/Vista/Windows 7/Windows 8/Windows 10/Windows 11
Updated	January 13, 2026
Author	Hiyohiyo (Crystal Dew World)
Category	Benchmarking
License	Freeware
Language	English
Download	378

Overview

CrystalDiskMark Portable is a lightweight disk benchmarking tool that allows Windows users to quickly measure the real performance of their storage devices. It works with traditional hard drives, SSDs, NVMe drives, USB flash drives, and external storage devices, giving you an accurate picture of how fast your hardware actually is.

Because this is the portable edition, it does not need to be installed. You can run it directly from a USB drive or any folder, making it perfect for technicians, reviewers, and users who want to test multiple systems.

What Is CrystalDiskMark Portable?

CrystalDiskMark Portable is a drive speed testing utility that measures how quickly a storage device can read and write data. Instead of relying on manufacturer claims, it performs real-world tests using different file sizes and access patterns to show how a drive behaves in everyday use.

It is commonly used to:

Test SSD and NVMe speeds
Compare old and new drives
Diagnose slow storage
Verify external drives and USB devices

How It Works

The software creates temporary test files and writes data to your drive, then reads it back while measuring speed. It runs multiple types of tests, including:

Sequential Read/Write – how fast large files move
Random Read/Write – how fast small files are accessed
Queue Depth Tests – how the drive handles heavy workloads

These results give you a clear idea of how well your storage performs in real-world scenarios like gaming, booting Windows, copying files, and running applications.

Why Use the Portable Version?

CrystalDiskMark Portable is ideal when:

You don’t want to install software
You work on multiple computers
You need a fast diagnostic tool on a USB drive
You want to avoid leaving files behind on a system

Just extract it, run the EXE file, test the drive, and close it — no changes are made to the system.

Key Features

Tests both sequential and random read/write speeds
Supports different test data patterns
Works with HDDs, SSDs, NVMe, USB, and external drives
Multi-language interface
Theme support
Portable, no installation required

Who Should Use It?

CrystalDiskMark Portable is perfect for:

PC builders
Gamers checking SSD performance
IT technicians
Laptop and desktop owners diagnosing slow systems
Anyone upgrading or replacing storage

Conclusion

CrystalDiskMark Portable is one of the most reliable and easy-to-use disk benchmarking tools available for Windows. It gives you fast, accurate insight into how well your drives perform, without requiring installation or advanced technical knowledge.

If you want to know whether your storage is running as fast as it should, this tool is a must-have.