• A computer with a reduced instruction set (RISC) employs a central processing unit (CPU) that follows the processor design philosophy of simplified instructions. RISC is the most efficient CPU architecture technology available today.
• This architecture is a progression and alternative to computing with sophisticated instruction sets (CISC). The underlying notion of RISC is to have simple instructions that do little but execute quickly, resulting in higher performance.
• The most basic RISC feature is a processor with a modest core logic that allows engineers to expand the register set and internal parallelism by implementing the following:
• Increases the number of simultaneous threads performed by the CPU at the thread level.
• Parallelism at the instruction level improves the speed with which the CPU executes instructions.

Read More: What do you mean by parallel processing?