memory - 为什么 RAM 是 2 的幂？

Question

为什么 RAM 的数量总是 2 的幂？

512、1024等

具体来说，Android模拟器使用512、768、1024 RAM有什么区别？

Answer 1

Memory is closely tied to the CPU, so making their size a power of twomeans that multiple modules can be packed requiring a minimum of logicin order to switch between them; only a few bits from the end need tobe checked (since the binary representation of the size is 1000...0000regardless of its size) instead of many more bits were it not a powerof two.

Hard drives are not tied to the CPU and not packed in the same manner,so exactness of their size is not required.

来自 https://superuser.com/questions/235030/why-are-ram-size-usually-in-powers-of-2-512-mb-1-2-4-8-gb
正如 BrajeshKumar 在对 OP 的评论中所引用的那样。谢谢布拉杰什!