Getting Started with RAM

I didn't finish this article, but some if it is useful, so i've published it anyway.


  • DDR -
  • MHz - MegaHertz:
    • The number of times per second the RAM can be accessed
  • CAS Latency - Column Access Strobe or often just “CL”
    • The amount of time the RAM takes to respond to an instruction

First Steps

Where to Shop

  • RAM Manufacturers


  • RAM Sizes (this is a bad explanation)
    • 2GB is tiny
    • 4GB is small
    • 8GB fits most needs
    • 16GB for almost all gaming & creative needs
    • 32GB is a lot
  • Do RAM sticks need to be identical? (see
    • Prefer same brand due avoid errors
    • Match DDR4 with DDR4 (required) (or ddr3 w/ ddr3, etc)
    • Match voltage (recommended) or all RAM sticks will run at highest voltage
    • Match MHz (recommended) or all RAM sticks will run at the lowest MHz
    • Match CAS Latency (recommended) or all sticks will run at highest latency
  • RAM Speeds: (see
    • DDR4 Ranges from 2400-4400 MHz. Read more from crucial
    • "The “sweet spot” for most users today (particularly gamers) with the price in mind is around CL14 2666MHz to CL16 3200MHz." -

Where to learn more

  • RAM Speeds
    • A really good article that will teach you about RAM speeds from from Dec 22, 2020. Also, it tries to sell you some RAM sticks (paid affiliate links I assume) & idk about the sticks on offer.
    • List of RAM speeds & DDR generations from crucial
  • Do RAM sticks need to match?

Check compatability with laptop / Motherboard

Can I trust this manufacturer?

Can I trust this seller?

Other stuff I'm curious about

  • C-Die vs D-Die (something i saw as a difference between two samsung sticks)
  • Crucial says most RAM sellers just assemble chips manufactured by other companies & there are very few actual manufacturers.