分层存储
最后更新于:2022-04-02 04:09:00
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## 分层存储体系 (Memory Hierarchy)
![](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/b4/9e/b49e063415009b385939883d116f215c_364x400.png)
- L1 2-4 cycle
- L2 10-20 cycle
- RAM 200-300 cycle
- HD (RW:10~50m cycle)
- SSD 内存的10-1000倍
> cycle 表示一个晶振
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