Feature |
RISC (Reduced Instruction Set Computer) |
CISC (Complex Instruction Set Computer) |
Instruction Set |
Limited, simple instruction set | Large, complex instruction set |
Execution Speed |
Faster due to fewer, simpler instructions | Slower because of complex instructions |
Instruction Size |
Fixed instruction size | Variable instruction size |
Cycle per Instruction |
Executes one instruction per clock cycle | Executes multiple cycles per instruction |
Complexity |
Simpler hardware design | Complex hardware design |
Power Efficiency |
More power-effic ient | Less power-effic ient |
Memory Usage |
Requires more memory to store additional instructions | Requires Less memory for instructions |
Programming |
Relies on software for complex tasks | Relies on hardware for complex tasks |
Examples |
ARM, MIPS, SPARC |
Intel x86, AMD Ryzen |
Applications |
Mobile devices, IoT, and embedded systems | Personal computers, Laptops, and servers |
Key Points about RISC:
1. Each instruction performs a single operation.
2. Ideal for portable devices due to low power consumption.
3. Utilizes pipelining for faster processing.
Key Points about CISC:
1. Instructions can perform multiple tasks in one operation.
2. Requires fewer instructions for complex tasks.
3. More compatible with legacy software.
Summary:
RISC processors focus on simplicity and speed, making them suitable for mobile and embedded systems.
CISC processors prioritize functionality and compatibility, making them better for desktops and high-performance tasks.
More related topics :
What is microprocessor: https://studysahi.com/microprocessor-functions-types
