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来源：百度知道 编辑：UC知道 时间：2024/04/27 17:07:12
Microprocessor Performance
The number of transistors available has a huge effect on the performance of a processor. As seen earlier, a typical instruction in a processor like an 8088 took 15 clock cycles to execute. Because of the design of the multiplier, it took approximately 80 cycles just to do one 16-bit multiplication on the 8088. With more transistors, much more powerful multipliers capable of single-cycle speeds become possible.
More transistors also allow for a technology called pipelining. In a pipelined architecture, instruction execution overlaps. So even though it might take five clock cycles to execute each instruction, there can be five instructions in various stages of execution simultaneously. In that way it looks like one instruction completes every clock cycle.
Many modern processors have multiple instruction decoders, each with its own pipeline. This allows multiple instruction streams, which means that more than one instruction can complete during e
The number of transistors available has a huge effect on the performance of a processor. As seen earlier, a typical instruction in a processor like an 8088 took 15 clock cycles to execute. Because of the design of the multiplier, it took approximately 80 cycles just to do one 16-bit multiplication on the 8088. With more transistors, much more powerful multipliers capable of single-cycle speeds become possible.
More transistors also allow for a technology called pipelining. In a pipelined architecture, instruction execution overlaps. So even though it might take five clock cycles to execute each instruction, there can be five instructions in various stages of execution simultaneously. In that way it looks like one instruction completes every clock cycle.
Many modern processors have multiple instruction decoders, each with its own pipeline. This allows multiple instruction streams, which means that more than one instruction can complete during e
微处理机表现可用的晶体管的数目对一个处理器的表现有影响巨大的.如同早些时候注意到那样,一典型的一个像
一8088处理器方面的教育需要15钟循环来执行.由于乘数的设计,它需要大约80循环来仅仅做在8088上一16-位倍增
.用更多晶体管,可能做出专一-循环速度强大得多乘数变得可能.更多晶体管也考虑到一称为用管道输送技术.在一
用管道输送建筑中,指令执行重叠.那样尽管,它可以需要五钟循环来执行每一指令同时可能有五执行的各种各样舞
台方面的教育.那样它看起来像指令使每一个钟循环完满的.很多现代处理器用它的自己管道每个有多重指令译码
程序.这个允许多重指令溪流,在每一钟期间使超过指令能的手段完满使循环的.这技术能是很复杂执行,所以它拿
许多晶体管.
微处理器性能
晶体管的数量将可产生了巨大的作用，对处理器的效能。因为如前所述，一个典型的指示，在一个处理器像8088年花了15个时钟周期来执行。由于设计中的乘数，它大约有80个周期，只是做一个16位乘法就8088 。随着更多的晶体管，更强大的乘数能够单周期的速度成为可能。
更多的晶体管也允许某种技术，称为流水线。在一个流水线架构，指令执行重叠。因此，尽管它可能需要五年的时钟周期来执行每一个指令，可以有5个指令，在不同阶段的执行同时进行。这种方式看起来像一个指令完成后，每一个时钟周期。
许多现代的处理器有多种指令解码器，每个国家都有它自己的管道。这允许多个指令流，它是指一个以上的指令才能完成，在每一个时钟周期。这种技术可以是相当复杂的执行，因此需要大量的晶体管。