Remember DDR4
Full name: Double Data Rate 4
Memory aid: Four follows three, but the slot key also changes.
DDR4 and DDR5 desktop modules have different keying.
Study area: Memory & modules · Batch 1
Relevant study for: CompTIA A+ Core 1 220-1201 · CompTIA Server+
Practice with exam flashcards →Hardware & Components / Knowledge library
DDR4 — Double Data Rate 4
Identifies the fourth DDR SDRAM generation.
Why learn DDR4 — Double Data Rate 4?
Identifies the fourth DDR SDRAM generation.
Where it came from
DDR4 and DDR5 desktop modules have different keying.
- Memory aid (a learning cue, not the expansion): Four follows three, but the slot key also changes.
Build your understanding
Work through these exercises in order. Try the task before opening a reference.
- Without looking, expand DDR4: Double Data Rate 4.
- Recall this memory aid: Four follows three, but the slot key also changes.
- Explain the practical use: Identifies the fourth DDR SDRAM generation.
- Explain this distinction: DDR4 and DDR5 desktop modules have different keying.
- Identify DDR4 in a device specification, architecture diagram, or system inventory.
Documentation and sources
- Micron DRAM products and technical resources (www.micron.com)