| RISC | CISC |
|---|---|
| RISC stand for reduced instruction set computer. | CISC stand for complex instruction set computer. |
| It has few instructions. | It has more instruction. |
| Spends more transistors on memory registers. | Transistors used for storing complex instructions. |
| It has fixed length instructions. | It has variable length instruction. |
| It has few data types as compared to CISC. | It has more data types as compared to RISC. |
| It has single cycle operation. | It has multi cycle operation. |
| Only load/store instruction access memory. | Many instruction access can memory. |
| It has large number of general purpose registers. | It has small number of general purpose registers and several special purposes registers. |
| It has few addressing modes. | It has more addressing modes. |
| It has a hard wired unit of programming. | It has a micro programming unit. |
| Pipelining does function correctly. | Pipelining does not function correctly. |
