Every SSD Type Explained in Detail

Published at : 23 Dec 2025

Every SSD Type Explained in Detail

Not all SSDs are created equal — and yes, an M.2 stick can be just as slow as a 2.5" SATA drive.

In this video, we break down every major type of SSD and interface so you stop guessing and start buying the right drive:

👉 2.5" SATA SSDs and why they cap at ~550 MB/s

👉 The M.2 form factor (and why M.2 ≠ NVMe ≠ “always fast”)

👉 AHCI vs NVMe – the old hard-drive protocol vs modern SSD protocol

👉 PCIe lanes & generations (3.0 / 4.0 / 5.0) and how they throttle your speed

👉 x2 vs x4 NVMe drives and how to spot hidden bottlenecks

👉 Clear recommendations on what SSD to buy now

By the end, terms like SATA, M.2, NVMe and PCIe will finally make sense — and your next storage upgrade won’t be a downgrade.
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Disclaimer: At Tech in a Teacup, we do our best to research, fact-check, and simplify complex tech topics into clear explanations. Still, technology evolves quickly, and occasional mistakes, mispronunciations, or oversights may happen. Our content is for educational purposes only and should not replace official documentation or professional advice. If you spot an error or have a correction, please share it kindly in the comments, we’re always learning and improving, video by video. Thanks for being part of this journey with us!