CPU performance

CPU performance

1. CORES

   • CPU Cores are how many instructions can be executed at the same time.
   • Increasing the number of cores will increase the the amount of instruction executed at the same time.
   • E.g a quad core will execute instructions 4 times faster at the same time.

2. CACHE

   • Cache is super fast memory that is built into the CPU. It stores the most frequently used instructions
   • If you increase the number of cores, then instructions will be fetched much quicker, than from RAM
   • The F-D-E cycle will happen much quicker, especially the F part of the cycle

3. CLOCK SPEED

   • Clock speed means how many instructions are being executed per second
   • 3 GHz means 3 billion instructions are being executed every second
   • Increasing the clock speed will increase the number of instructions executed per second.