H2testw is a program developed by Harald Boegeholz that can test your storage devices for their actual size, as opposed to what is advertised. The development of this tool was a response to the proliferation of counterfeit SD cards and USB sticks that did not match the advertised size.

Fortunately, there are a number of free tools that can test the speed and capacity of your cards. Before you order a large batch of super cheap SD cards, buy one and test it to make sure you’re getting what you pay for. Also read: 4 Things to Do Immediately if You Have Been Scammed. 1.

2024年5月17日 · Discover what are the 5 best free SD Card speed test tools that will help you to understand real speed and capacity of your SD card.

2024年2月7日 · How do I know if my SD card is bad? This page offers 3 methods to check SD card health in Windows 11/10 free of charge, helping you identify potential issues in advance.

2022年12月13日 · Find Out Everything About 5 Best Free SD Card Speed Test Tools. Learn How to Use and Download Them in Order to Know Your Real SD Card Speed.

2025年1月23日 · SD card speed test on a Windows PC can be very easy with the help of EaseUS Partition Master's "Disk Mark" feature. With simple clicks, you can get I/O, Delay, and detailed speed of your SD card, such as sequential read/write and random read/write. What's more, you don't need to type any commands in this process. Windows 11/10/8/7 100% Secure.

2024年8月20日 · An SD card speed test measures your SD card’s read and write speeds, providing insight into how quickly data can be transferred to and from the card. This is particularly important for high-performance tasks, such as recording high-definition video or running software from an SD card.

2025年3月31日 · SD card speed test tools can help you run an SD card speed test to check if it is a fake SD or micro SD card by testing its speed and capacity. In order to write this article, we spent a month testing 8 of the most popular free SD card speed test tools on the market on Windows, Mac, and even Android devices.

2024年8月31日 · Here are some free tools to help you verify the speed and capacity of your SD cards, along with detailed steps and tips to make the process seamless. 1. H2testw is a reliable and widely used...

2016年11月15日 · 它们对于评估ssd（固态硬盘）、hdd（机械硬盘）、usb闪存驱动器、sd卡等存储介质的性能至关重要，尤其是在需要优化系统性能或在存储设备故障前进行预防性检查时。