SpeedOut is a non-destructive tool, which means that no files are overwritten and the SD Card/Flash Drive doesn’t need formatting to run the test. The scores can be saved or copied by right clicking on the title bar. SpeedOut will then run 4 passes for both reading and writing tests and display the average for each. To start the test, you need to first choose your USB drive from the drop-down (if you’ve more than one). It means that the scores aren’t affected by the drive file system. The program runs the tests at a low level. SpeedOut is a simple tool to quickly measure the sequential read and write speed of your flash drive/SD Card. You can then choose to publish the test results if you wish by clicking the button and ticking the box to agree to publish the results. It will sequentially read and write a 100MB file to get the true scores. After you’ve found the SD card, you just need select it and press Start Test. USBDeview is a portable utility by Nirsoft that allows you to find your USB device or SD/microSD Card and test its true speed. As a result, it may take a bit longer to complete the test. The only minor limitation to H2testw is the fact that it’s a bit old, which means that the software hasn’t been optimized for larger-capacity drives. It will give you the option to use English as the default language. However, once downloaded, you simply need to run the installer. That’s why its website and the software is in German language. This software was originally developed by a German software engineer. H2testw is a super-reliable tool that’s able to test the true capacity and read/write speed of your SD/mircoSD card or drive. Download Blackmagic Disk Speed Test for Mac.However, this also means that the test takes a lot of time to complete. It then reads that data block to verify the performance of the drive/SD card. Blackmagic Disk Speed Test writes large blocks of data to the storage device. The only limitation of this tool is that it’s designed for people who work with large files, such as video clips. It’s a useful free utility is designed to test the speed of SD and microSD cards. Here are the 5 best free SD Card speed testing tools: Blackmagic Disk Speed Testīlackmagic Disk Speed Test is one of the best tools if you own a Mac. Read this article to learn everything about SD Card Speed Class (speed class, UHS, and video speed class). The other way is by giving false information about the SD card speed. For example, advertising the card capacity as 256GB when it really only has 16GB capacity. One is by giving inaccurate information about card capacity.

Usually there are two ways by which a buyer of SD cards can be cheated. The tools i present you today can be used to verify whether an SD card’s capacity is real and not “fake”. In this article, you’ll discover what are the five best free software for testing SD Card speed. Are you wondering how fast is your SD card? If so, you’ve landed in the right place!įortunately, there are several free tools around the internet that you can use to test your SD card speed and capacity.

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