Last updated on April 22, 2024

SD cards are popular, but how much do you know about yours? Do you know which is the fastest SD card out there? On this page, you can use reliable tools to test your SD card's speed:

How much do you know about SD card speed classes? There are different speed classes for SD cards, and this article will help you understand your card's speed and make better choices.

How to Run an SD Card Speed Test on Windows 10/11 - Two Safe Methods

Here, you'll learn two ways to test SD card speed, with both third-party tools and built-in methods:

Task Manager can only show real-time SD card speed, so if you want detailed peak speed data, turn to the Partition Master Professional. Let's learn how to use Partition Master Professional to run an SD card speed test.

Run the SD Card Speed Test with Tool Partition Master - Easy

With the “Disk Benchmark” feature of Partition Master, you can easily perform an SD card speed test on your Windows PC. With just a few clicks, you can obtain the I/O, latency, and detailed speeds, such as sequential read/write and random read/write, of your SD card. Best of all, no command input is required throughout the process.

You can find more information in the following list:

    • Supported Systems: Windows 11/10/8/7 and Windows XP/Vista
    • Target Users: All users (beginners and experienced)
    • Interface: Quite intuitive
    • Difficulty: Easy to use

Here are the steps to perform an SD card speed test using the Partition Master tool:

Step 1: Launch AOMEI Partition Assistant. Then click the Download button to activate the "DiskMark" feature in the "Discovery" area.

Click the Download button on the DiskMark page.

Step 2: Select the target drive, test data, and block size from the drop-down menus.

Select a disk to test its speed. Select a disk

Step 3: Once all settings are configured, click on the “Start” button to begin the disk benchmarking process. You will then see the sequential or random read/write speeds, I/O operations, and latency data.

Click Start.

So let's see what else this tool can do to help.

Main features of Partition Master:

In addition, it can help you manage your SD card – for example, format/erase the SD card and merge/move/partition it. Download and give it a try.

Running an SD Card Speed Test Through Task Manager - Limited Data

Task Manager is also a reliable free SD card speed test tool that can help you test the speed of your SD card. However, as mentioned above, it doesn't show the peak data of the SD card. Here are the steps:

Step 1: Search for “Task Manager” in the search box and open it.

Step 2: In the left panel of the Performance section, find your SD card.

Next up, we only need the translation in American English for the sentence: "Check SD Card Speed"

Since Task Manager displays real-time data, the figures may fluctuate. It's recommended that you use the Partition Master tool. With Partition Master, you can run an SD card speed test to check the maximum speed of your SD card.

Why run an SD card speed test?

There are four main types of cards on the market: SD, SDHC, SDXC, and SDUC. They have different characteristics, but serve the same purpose – data storage. Which one should you choose? Speed is the primary factor to consider. Here's why SD card speed matters:

    • Better match your device: The fastest SD card might not be the best for you. It's important to ensure that your device (like your camera/Android) can take full advantage of an SD card's speed.
    • Check if the SD card is fake: Sometimes, you might end up with a fake SD card, or one that doesn't have the capacity or speed it claims.

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You can learn more about SD cards from the link below:

Thus, it's recommended to run an SD card speed test to make the most out of it. Fortunately, there're several ways you can perform an SD card speed test on Windows 11/10/8/7.

Conclusions

Since SD cards are used in Android, Linux, Mac, and Windows devices, it's important to know how to test their read and write speeds to spot a fake.

This guide will show you how to check your SD card's speed in two ways: using Task Manager or with the SD Card Speed Test tool from Partition Master. Task Manager will give you basic results, but Partition Master will provide a more accurate and comprehensive display of your speed.

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Frequently Asked Questions About SD Card Speed Tests

This section will share some frequently asked questions and answers about running an SD card speed test on a Windows device. Hopefully, this will be helpful to you.

**1. Are there any apps to test SD card speed?**

Of course, there are many apps to test the speed of an SD card. Among them, Partition Master is outstanding. You can test the speed of your SD card/USB/other external hard drive with simple steps:

Step 1. Launch AOMEI Partition Assistant on your Windows PC. Navigate to the "Discovery" section.

Click “Disk Label,” then select your SD card.

Step 3: Click the "Refresh" button, and you'll see your detailed speed.

2. How fast is a 1TB SD card?

It depends on the brand. For example, the SanDisk 1TB UHS-1 SDXC has a maximum read speed of 200 MB/s and a write speed of up to 140 MB/s.

3. Which SD card is the fastest?

UHS Speed Class and Video Speed Class cards tend to be faster. Video Speed Class is designed to support higher video resolutions and recording features; on the other hand, many high-end cameras require at least a U3-rated card for recording high-resolution video and similar features.