While this verbiage is not incorrect, it is more accurate (and less confusing) to describe each processing unit as a CPU, while each processor within a CPU is a processing core. Some technical diagrams even label individual processors as CPUs. NOTE: The terms "CPU" and "processor" are often used interchangeably. A single frontside bus routes data between the CPU and the system memory. In some cases, individual processing cores may have their own L2 cache, though they can also share the same L2 cache. While processor architectures differ between models, each processor within a CPU typically has its own ALU, FPU, register, and L1 cache. For example, a server with two hexa-core CPUs has a total of 12 processors. A computer may also have more than one CPU, which each have multiple cores. High-end CPUs may have six (hexa-core) or even eight (octo-core) processors. For many years, most CPUs only had one processor, but now it is common for a single CPU to have at least two processors or "processing cores." A CPU with two processing cores is called a dual-core CPU and models with four cores are called quad-core CPUs. central processing unit In central processing unit The control unit of the central processing unit regulates and integrates the operations of the computer. ![]() The CPU contains at least one processor, which is the actual chip inside the CPU that performs calculations. It processes the data and produces output, which may be stored by an application or displayed on the screen. It runs the operating system and applications, constantly receiving input from the user or active software programs. Stands for "Central Processing Unit." The CPU is the primary component of a computer that processes instructions.
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