1. 缓存内存：
高速缓存是计算机中插入 CPU 和主内存之间的更小、速度更快的内存组件。为了使这种安排有效。缓存需要比主存快得多。这种方法比使用快速存储设备来实现整个主存储器更经济。
2. 注册：
寄存器是内置于处理器本身的最小保存数据元素。这些是处理器可以直接访问的内存位置。它保存大约 32 位到 64 位的少量数据，并且可以保存一条指令、一个存储地址或任何类型的数据，例如位序列或单个字符。
例如：累加器寄存器、程序计数器、指令寄存器、地址寄存器等。
高速缓存和寄存器的区别：
| S.No. | CACHE MEMORY | REGISTER |
|---|---|---|
| 1. | Cache is a smaller and fastest memory component in the computer. | Registers is a small amount of fast storage element into the processor. |
| 2. | Cache memory is exactly a memory unit. | It is located on the CPU. |
| 3. | It is used during reading and writing processes from the disk. | It is used to store and retrieve information from them. |
| 4. | It is a high-speed storage area for temporary storage. | It is used to store data temporarily for processing and transfer. |
| 5. | It copied the recently used data into. | It holds operands or instruction that CPU is currently processing. |
| 6. | It reduces the average memory access time. | It reduces the time required to find the item stored in memory. |
| 7. | CPU accesses memory at the faster rate than register. | CPU can operate on register contents at the rate of more than one operation in one clock cycle. |
| 8. | Dynamic Page Cache, Database Query Cache are example of cache. | Loop counters is example of register. |