Zach's

Zero to CCNA

Learning, Certifying, and Climbing the IT Ladder

Home Hardware Troubleshooting

Certifications Networking Commands

Hardware

Guides on the physical building blocks of IT — from RAM and storage to the components that make your machine tick.

Understanding the Different Types of DDR RAM

Published December 18, 2025

DDR RAM comes in several generations, each improving on speed, power efficiency, and pin count. Take a look at how DDR, DDR2, DDR3, DDR4, and DDR5 stack up against each other.

What is a Hard Drive? Understanding Storage Types

Published August 3, 2026

What actually is a hard drive, and how do HDDs, SSDs, and NVMe drives stack up? Break down the differences in speed, price, and what each one is best for.