D-Bench vs DiskMark

D-Bench is a free Windows utility for measuring read and write performance on SSDs, HDDs, NVMe drives, and USB storage. It reports throughput in MB/s, IOPS, and average latency, with read and write throughput separated. Workloads can be sequential or random, with configurable block size, queue depth, and thread count. HDD, SSD, and Flash Drive presets offer starting points; additional controls include access pattern, read/write mode, read percentage, duration, warm-up, and cool-down. The drive selector shows ready drives with letter, volume label, free space, and total capacity. Tests can be added, updated, removed, reordered, duplicated, or cleared. Results export to plain TXT or styled, self-contained HTML reports. D-Bench uses unbuffered I/O and disables operating-system read caching for write tests as much as possible. Downloads are offered in Default, Blue, and Red themes. One build supports Windows 8, 8.1, 10, and 11; another supports Vista and 7. The download is approximately 470 KB, and the utility has no command-line interface.

DiskMark is a Windows utility for benchmarking disks and hard drives. It lets users set advanced test options to assess drive performance and typical operating performance. The software is open source under the MIT License, and the maker says source code is available on GitHub and with version-specific releases. Its listed stable release is version 1.0.0.8, released on 2018-02-23; the release notes mention terminology changes and updated documentation. The release history runs from version 1.0.0.0 through 1.0.0.8. The latest listed release offers separate 32-bit and 64-bit Windows executables: DiskMark32.exe at 586.42 KB and DiskMark64.exe at 608.11 KB. The plan is free. The maker's site provides a Support section with a Contact link.