The PowerPC uses a load/store (also called RISC) instruction set, which means that the only time it accesses main memory is for loading into registers or copying a register to memory.

PowerPC使用了加载/存储（也成为RISC）指令集，这意味着访问主存的惟一时机就是将内存加载到寄存器或将寄存器中的内容复制到内存中时。