Which processor is better RISC or CISC Why?

In common CISC chips are relatively slow (compared to RISC chips) per instruction, but use little (less than RISC) instructions. An other advantage of RISC is that – in theory – because of the more simple instructions, RISC chips require fewer transistors, which makes them easier to design and cheaper to produce.

Is RISC better than CISC?

CISC ISAs use more transistors in the hardware to implement more instructions and more complex instructions as well. RISC needs more RAM, whereas CISC has an emphasis on smaller code size and uses less RAM overall than RISC.

What is the difference between RISC and CISC processor?

These are simple instructions which are generally executed in one clock cycle. RISC chips are relatively simple to design and inexpensive….Difference between RISC and CISC processor | Set 2.

Do CISC processors allow pipelining?

When pipelining is done with a CISC processor it is done at a different level. The execution of instructions is broken down into smaller parts which can then be pipelined. In effect, The CISC instructions are translated into a sequence of internal RISC instructions, which are then pipelined.

Which is better for pipelining CISC or RISC?

Thus, RISC architecture requires more RAM but always executes one instruction per clock cycle for predictable processing, which is good for pipelining. One of the major differences between RISC and CISC is that RISC emphasizes efficiency in cycles per instruction and CISC emphasizes efficiency in instructions per program.

How are CISC instructions different from RISC instructions?

While CISC instructions varied in length, RISC instructions are all the same length and can be fetched in a single operation. Ideally, each of the stages in a RISC processor pipeline should take 1 clock cycle so that the processor finishes an instruction each clock cycle and averages one cycle per instruction (CPI).

How does the pipeline of a RISC processor work?

A RISC processor pipeline operates in much the same way, although the stages in the pipeline are different. While different processors have different numbers of steps, they are basically variations of these five, used in the MIPS R3000 processor: fetch instructions from memory

Can a RISC processor run more than one cycle per instruction?

Pipeline Problems In practice, however, RISC processors operate at more than one cycle per instruction. The processor might occasionally stall a a result of data dependencies and branch instructions. A data dependency occurs when an instruction depends on the results of a previous instruction.

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