❌ ✅ Likely Windows file cache. Always run a test size larger than your RAM (e.g., 8 GiB) to bypass caching.
Manufacturers often advertise “up to 7,000 MB/s” under ideal conditions. CDM shows you what your drive actually delivers on your system . 2. Key Metrics You’ll See (And What They Mean) After running a test, you’ll see a grid of results. Here’s how to decode them: crystaldiskmark
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