How-To's

6 Tools to Test USB Flash Drive Read and Write Speeds

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Each and every flash drive manufacturer claims a certain read and write speed of their flash drive, but that particular read and write speed can be achieved on certain conditions that the manufacturer creates while recording these read and write speeds. If you also bought a new flash drive with high read and write speed, you should check it before the first use. The internet is full of free tools to test the read and write speed of a flash drive; we are listing the best of them so you can choose the right one.

The read and write speed, which you get from the tools, depends on the USB port to which the flash drive is connected (USB 2.0 or USB 3.0), the configuration of your PC, and the size of the file you are transferring to the flash drive. If you are testing a USB 3.0 flash drive, then you should connect it to a USB 3.0 port to get the right transfer speed.

Before using any tool, let me show you a very easy way to get a glimpse of average write speed of your flash drive. On Windows 8 and above, the copying window will show you the average write speed in real time. As you can notice from the screenshot below that the average speed is approx. 5 MB/s.

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Here are some of the tools that would help you in testing the data transfer speed of your USB flash drive:

1. Flash Drive Tester (Free | Windows)

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Flash Drive Tester is a tool to check for any error in a flash drive and fix them. Along with showing the test results, Flash Drive Tester also lists the average read and write speed of that flash drive. This free tool installs on your Windows PC, and you can also check out errors for SD cards and SSDs.

Download Flash Drive Tester (539 KB) (PC)

2. Check Flash (Free | Windows)

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Another free tool to check for errors and report read and write speed within the results. Check Flash writes a temporary file to the flash drive and test for the errors and read-write speed. You can set the tool to check the whole drive, the number of cycles until the error is found. The tool is free to download and does not need installation to work.

Download Check Flash (376 KB)

3. CrystalDiskMark (Free | Windows)

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CrystalDiskMark is a disk benchmark software which comes with both installers as well as portable mode. This software is a multitasker which can also test the RAM for read and write speed. The user interface is clear and simple with big numbers showing the current write speed. CrystalDiskMark comes with different themes if you care for them.

Download CrystalDiskMark (2.89 MB)

4. USB Flash Benchmark (Free | Windows)

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USB Flash Benchmark is a free portable, quick benchmarking tool to know about errors and read-write speed of a flash drive. Reports read and write speed for different file sizes and shows result in a chart so you can get a glimpse of what read and write speed is your flash drive is offering you.

Download USB Flash Benchmark (36 KB)

5. Disk Speed Test (Free | Mac OS 10.6+)

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Disk Speed is a free app for Mac OS 10.6 and higher to test the read and write speed for USB drives. The user interface is a straightforward with read and writes speed meters on the top and detailed results below. Disk Speed Test mainly writes a series of videos to the drive to check the speed from PAL, NTSC to 4k videos and record the speed. You can also save a screenshot of the result for comparing two flash drives.

Download Disk Speed Test (23 MB)

6. Flash Memory Toolkit ($39.95| Windows)

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Flash Memory Toolkit is a paid software which offers a trial version with some limitations. Flash memory toolkit is not just a flash memory benchmarking software, it comes with error scanning, flash drive eraser, file recovery, backup restore, low-level and full benchmark. Except the read speed check and low-level benchmark, all other features are locked in the trial version.

Download Flash Memory Toolkit (974 KB)

Conclusion

If you are not testing the transfer speed of flash drives professionally then you should test the flash drive with the first method mentioned because that is the real-time transfer speed of the flash drive.

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