Main Memory

• What is cache?

  Fast-access memory stored directly in the CPU used to storage frequently accessed data.
• What are the traits of Level 1 Cache?

  Small, fast, located on the CPU.
• What are the traits of Level 2 Cache?

  Slower access, faster capacity than L1. Usually stored in the CPU or nearby on another chip.
• What are the traits of Level 3 Cache?

  Largest capacity, slowest access, feeds data to L1.
• What is the disadvantage of cache?

  Expensive, therefore, low capacity.
• What does RAM stand for?

  Random Access Memory
• What are the traits of RAM?

  Volatile, temporary, quick access (although slower than cache)
• What is RAM used to store?

  Instructions and/or data being used.