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Difference between Simultaneous and Hierarchical Access Memory Organisations
As we know in context of computer/system, the main key feature on which the whole performance get dependent is Memory. It is memory and its allocation which make the system to perform fast and efficient. Now on the basis of organizing of this memory in the system, we can distinguish between Simultaneous and Hierarchical Access Memory Organisations.
Following are the important differences between Simultaneous and Hierarchical Access Memory Organisations.
| Sr. No. | Key | Simultaneous Access Memory Organisations | Hierarchical Access Memory Organisations |
|---|---|---|---|
| 1 | Definition | Simultaneous Access Memory Organisations is the memory organizing technique in which CPU can interact with multiple memory levels at same time and gets data interaction. This type of organisation is also known as Parallel Memory Organisation. | On other hand Hierarchical Access Memory Organisations is the memory organising technique in which CPU can interact with single lowest level of memory level at a time, however this memory level is connected with its next higher memory level and so on. |
| 2 | Data Interaction | As mentioned in the above point, in Simultaneous Access Memory Organisations data interaction is with multiple memory levels at a time. | On other hand, in case of Hierarchical Access Memory Organisations data interaction is with only single memory level at a time. |
| 3 | Data Retention | If data is not found at one memory level then CPU can directly access data from higher memory levels in case of Simultaneous Access Memory Organisations. | On other hand in case of Hierarchical Access Memory Organisations, CPU could not directly access data from higher memory levels if data is not found at its memory level. First data need to be copied from higher memory level to lower memory level then could get access by CPU. |
| 4 | Performance | Simultaneous Access Memory Organisations has better performance as compared to Hierarchical Access Memory Organisations | However on other hand Hierarchical Access Memory Organisations has degraded performance as compared to Simultaneous Access Memory Organisations. |
| 5 | Complex | Simultaneous Access Memory Organisations has more complex implementation as compared to Hierarchical Access Memory Organisations. | However, Hierarchical Access Memory Organisations has simple implementation as compared to Simultaneous Access Memory Organisations. |
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