COMPUTER FUNDAMENTALS

COMPUTER SOFTWARE

SYSTEM SOFTWARE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which is the fastest type of cache memory?
A
Level 1
B
Level 2
C
Level 3
D
Level 4
Explanation: 

Detailed explanation-1: -Level 1 cache is the fastest type of cache memory since it’s embedded directly into the CPU itself, but for that same reason, it’s highly restricted in size. It runs at the same clock speed as the CPU, making it an excellent buffer for the RAM when requesting and storing information and instructions.

Detailed explanation-2: -L1 cache has extremely fast transfer rates, but is very small in size. The processor uses L1 cache to hold the most frequently used instructions and data. L2 cache is bigger in capacity than L1 cache, but slower in speed. It is used to hold data and instructions that are needed less frequently.

Detailed explanation-3: -L1 or L2 can be significantly faster than L3, though L3 is usually double the speed of DRAM. With multicore processors, each core can have dedicated L1 and L2 cache, but they can share an L3 cache. If an L3 cache references an instruction, it is usually elevated to a higher level of cache.

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