COMPUTER ARCHITECTURE
MEMORY SYSTEMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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L1 cache
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L2 cache
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L3 cache
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L4 cache
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Detailed explanation-1: -Each core has its own L1 and L2 caches, while the L3 cache, also called the Last Level Cache or LLC, is shared among cores.
Detailed explanation-2: -L1 cache memory has the lowest latency, being the fastest and closest to the core, and L3 has the highest. Memory cache latency increases when there is a cache miss as the CPU has to retrieve the data from the system memory. Latency continues to decrease as computers become faster and more efficient.
Detailed explanation-3: -Level 3 (L3) cache is specialized memory developed to improve the performance of L1 and L2. 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.
Detailed explanation-4: -Every core of a multi-core processor has a dedicated L1 cache and is usually not shared between the cores. The L2 cache, and higher-level caches, may be shared between the cores.