Next lower level of the memory hierarchy is the main memory which is large but also comparatively slow. They are intended to contain copies of main memory blocks to speed up accesses to frequently needed data. Memory are called cache memories or caches. The memory components which are located between the processor core and main Of memory successively become larger and slower. ![]() Moving further away from the CPU, the layers high speed memory sitting on top of the hierarchy which is usually integrated within the processorĬhip to provide data with low latency and high bandwidth i.e., the CPU registers. The latency of main memory accesses which is slow in contrast to the floating-point performance of the CPUs. The idea behind this approach is to hide both the low main memory bandwidth and Implement hierarchical memory structures. In order to mitigate the impact of the growing gap between CPU speed and main memory performance, today’s computer architectures
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