Crystaldiskmark _best_ | TRENDING • PICK |

Below, I’ll break down exactly what CrystalDiskMark does, how to read its results, and how to use it properly. CrystalDiskMark (often called CDM) is a free, open-source disk benchmarking utility for Windows. It measures the read and write speeds of your storage drives (HDD, SATA SSD, NVMe SSD, USB flash drives, SD cards, etc.) using random and sequential data patterns.

❌ ✅ Likely Windows file cache. Always run a test size larger than your RAM (e.g., 8 GiB) to bypass caching. crystaldiskmark

If you’ve ever wondered whether your new NVMe SSD is actually hitting its advertised 7,000 MB/s speed—or why your old hard drive feels so sluggish— CrystalDiskMark is the tool you need. It’s lightweight, free, and the industry standard for storage benchmarking. Below, I’ll break down exactly what CrystalDiskMark does,