Improving CPU performance

Improving CPU performance

1. Increasing cache size

   • What is cache?
     • Cache memory is fast and expensive memory mainly for the temporary storage of the frequently used data
   • How does it help to improve performance?
     • More data is stored closer to the CPU, making the access to the required data faster, therefore, increasing the CPU performance

2. Increasing the number of cores

   • What are these?
     • Microprocessor, which carries out the fetch-decode-execute cycle, therefore, with the bigger number of cores, the CPU would be able to execute more of f-d-e cycles at the same time
   • How does it improve the performance?
     • More cores would be able to process the fetch-decode-execute cycle simultaneously, which makes the CPU more efficient

3. Pipelining

   • What is it?
     • Without pipelining, the CPU produces the fetch-decode-execute cycle one after another, whereas, with pipelining, it allows for the cycle to start even when the previous instruction wasn't done fully

4. Data Bus Length

   • What is data bus?
     • Set of wires which carries the set of data within the CPU
   • How does it improve the performance?
     • Increasing the size of the data bus, the CPU can carry more data, meaning that it would not have to make multiple different tries for 1 set of data

5. Address Bus Length

   • What is it?
     • Address Bus carries the address in the memory to the next instruction for the CPU to be fetched-decoded and processed.
   • How does it improve the performance?
     • It would be able to carry more data from the memory, making the CPU more efficient and faster