This video breaks down how HDD, SATA SSD, and M.2 SSD (SATA vs NVMe) actually work, including real speed differences, performance limits, and why some storage feels faster than others.
You’ll learn:
Why hard drives slow down over time
What defragmentation does and when it matters
Why SSDs don’t need defrag
The real reason SATA SSDs are limited to ~600 MB/s
How NVMe SSDs achieve multi-gigabyte speeds
Why some NVMe drives can still be slower than expected
Whether you're upgrading your PC, building a gaming setup, or just curious how storage works, this guide explains everything in a simple and clear way.