3.2 Addressing Memory

Question 1

What is RAM, and what is its role?

Answer 1

RAM (Random Access Memory) is non-persistent high-speed memory that temporarily stores data for quick access by the CPU.

Question 2

How does RAM differ from mass storage?

Answer 2

RAM is faster but non-persistent, while mass storage (HDDs/SSDs) is slower but retains data after power-off.

Question 3

What is the difference between cache memory, RAM, and mass storage?

Answer 3

Cache is the fastest and smallest, located in the CPU. RAM is larger and slower than cache but faster than storage. Mass storage is the largest and slowest.

Question 4

Why does upgrading RAM improve system performance?

Answer 4

It reduces reliance on slower mass storage, speeding up data access and processing.

Question 5

How is data accessed in RAM?

Answer 5

Each piece of data in RAM has a unique address accessed via the memory controller.

Question 6

What is the address space limit for 32-bit processors?

Answer 6

32-bit processors can address up to 4GB of RAM.

Question 7

What is the address space limit for 64-bit processors?

Answer 7

64-bit processors can theoretically address 16 exabytes of RAM, though practical limits are lower.

Question 8

Why are 64-bit processors better for modern systems?

Answer 8

They support significantly more RAM than 32-bit processors, overcoming the 4GB limit.

Question 9

What are the typical RAM requirements for office systems?

Answer 9

At least 8GB of RAM.

Question 10

What are the typical RAM requirements for gaming systems?

Answer 10

Between 16GB and 32GB of RAM.

Question 11

What happens to data in RAM when the computer is powered off?

Answer 11

All data in RAM is lost because it is non-persistent memory.

Question 12

What is the typical access speed for RAM compared to HDDs?

Answer 12

RAM operates in nanoseconds, while HDDs operate in milliseconds.

Question 13

What is the role of the memory controller in a computer?

Answer 13

It manages traffic between the CPU and RAM via the data and address buses.

Question 14

How does RAM act like a desktop compared to storage as a filing cabinet?

Answer 14

RAM holds frequently accessed files temporarily, while storage keeps data permanently.

Question 15

Why is RAM considered a cost-effective upgrade?

Answer 15

It provides significant performance improvements without the high cost of upgrading other components.