section_path: Hardware/Central processing unit
section_name: Central processing unit
paragraph_text: Central processing unit
  
  Mobile phones have central processing units (CPUs), similar to those in computers, but optimised to operate in low power environments.
  
  Mobile CPU performance depends not only on the clock rate (generally given in multiples of hertz) but also the memory hierarchy also greatly affects overall performance. Because of these problems, the performance of mobile phone CPUs is often more appropriately given by scores derived from various standardized tests to measure the real effective performance in commonly used applications.