Computer Maintenance · Beginner level

Beginner level · Module 1: Computer Hardware Fundamentals · Lesson 2 of 3

Storage and Memory

Compare storage types and understand how much memory a computer needs.

In this lesson you will

  • Compare HDD, SATA SSD and NVMe SSD
  • Check installed RAM and storage

Key concepts

hard disk driveSATA SSDNVMe SSDcapacity and speed

The lesson

Hard disk drives (HDDs) store data on spinning platters; they are cheap per gigabyte but slow and easily damaged by knocks.

Solid-state drives (SSDs) have no moving parts and are far faster. SATA SSDs use the same connection as hard drives; NVMe SSDs plug into an M.2 slot and are faster still.

For everyday Windows use, an SSD and at least 8 GB of RAM make the biggest difference to speed.

Step by step

  1. Check RAM and storage in system information.
  2. Identify the drive type.
  3. Compare prices per gigabyte.
  4. Recommend upgrades for a slow computer.

Practice activity

Write a short upgrade recommendation for a slow lab computer.

Expected result: A justified recommendation based on its current storage and RAM.

Check your understanding

  1. Why are SSDs faster than HDDs?

    Show answer

    They have no moving parts.

  2. Which upgrade usually helps a slow computer with an HDD most?

    Show answer

    Replacing the HDD with an SSD.

Taught live by an instructor — online or in person. Free course lessons are for self-study and do not lead to a certificate — see registration options.