RAM vs. ROM - Complete Comparison
This comparison covers RAM vs. ROM - Complete Comparison within RAM and ROM for GCSE Computer Science. Revise RAM and ROM in 3.4 Computer Systems for GCSE Computer Science with 16 exam-style questions and 16 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 6 of 11 in this topic. Use this comparison to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 6 of 11
Practice
16 questions
Recall
16 flashcards
RAM vs. ROM - Complete Comparison
| Aspect | RAM (Random Access Memory) | ROM (Read Only Memory) |
|---|---|---|
| Volatility | Volatile - loses data when power off | Non-volatile - keeps data without power |
| Access Type | Read AND Write (both fast) | Read only (or very slow write) |
| Speed | Very fast (nanoseconds) | Slower than RAM (microseconds) |
| Purpose | Temporary working memory | Permanent storage of essential code |
| Content | Running programs, open files, OS, data | BIOS/UEFI, boot instructions, firmware |
| Change Frequency | Changes constantly (many times per second) | Never or rarely changes (firmware updates only) |
| Size (Typical) | 4GB - 32GB (consumer devices) | Few MB (very small compared to RAM) |
| Cost per GB | Moderate (but getting cheaper) | More expensive per GB |
| User Interaction | User indirectly controls (opening programs) | User rarely interacts (firmware updates only) |
| Essential For | Running programs and multitasking | Starting the computer (boot process) |
Keep building this topic
Read this section alongside the surrounding pages in RAM and ROM. That gives you the full topic sequence instead of a single isolated revision point.
Practice Questions for RAM and ROM
Which of the following best describes RAM?
Explain why the BIOS must be stored in ROM rather than RAM.
Quick Recall Flashcards
16 questions on RAM and ROM — practise free
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