computing performance

computing performance

1. ram

   • Stores the programs
   • parts of the operating system and the files currently being used.
   • RAM is volatile, meaning that the data is not stored when the computer system is switched off.

2. cores

   • The number of independent processors in the CPU which run the fetch decode execute cycle simultaneously
   • Dual core: 2 independent processors in the CPU working
   • Simultaneously: At the same time

3. caches

   • is a hardware or software component that stores data so that future requests for that data can be served faster
   • To be cost-effective and to enable efficient use of data, caches must be relatively small
   • the data stored in a cache might be the result of an earlier computation or a copy of data stored elsewhere

4. clock speed

   • The number of fetch decode execute cycles a CPU can perform per second.
   • This is measured in hertz (Hz).
   • 1Hz – 1 cycle per second 1KHz – 1000 (thousand) cycles per second 1MHz – 1,000,000 (million) cycles per second 1GHz – 1,000,000,000 (billion) cycles per second