OCR A Level Computer Science
1.1.1c: The factors affecting the performance of the CPU: clock speed, number of cores, cache.
1.1.1c: The factors affecting the performance of the CPU: clock speed, number of cores, cache.
| Keyword | Definition |
|---|---|
| Arithmetic Logic Unit | the part of the CPU which performs logical or arithmetic binary operations on data |
| Cache | Limited amount of fast storage which can be used to store commonly accessed values or data that is likely to be requested from a slower storage device in the near future. |
| Central Processing Unit | the part of a computer that fetches, decodes and executes instructions. Consists of registers, ALU and CU |
| Clock speed | The number of instructions executed per second. Measured in Hertz (Hz). |
| Control Unit | the part of the CPU which sends signals to trigger and syncronise all other components |
| Cores | The number of separate processing units which can execute instructions at the same time (concurrently) |
