CPU

A processor is a device designed to execute commands. Each processor is characterized by:

- a set of executable commands;

- the speed of command execution in millions of operations per second (mips);

- the amount of addressable memory;

- the size of the processed words;

- the width of the used bus.

Depending on the set and order of execution of instructions, processors are subdivided:

- for classic CISC processors;

- for RISC processors with reduced instruction set;

- for MISC processors with a minimum set of long instructions;

- for VLIW processors with a set of extra-long commands.

The central processing unit is the main working component of a computer, which:

- performs arithmetic and logical operations specified by the program;

- controls the computing process; and

- coordinates the work of all computer devices.

In general, the central processor contains:

- arithmetic logic unit;

- data buses and address buses;

- registers;

- command counters;

- very fast small cache memory;

- a mathematical coprocessor of floating point numbers.

DDR2 is faster than DDR1. This is not entirely true. Of course, if we proceed from the principle of obtaining a useful frequency, then DDR2 memory looks more promising. But, due to the increased latency, the memory bandwidth decreased, along with this, the memory subsystem latency increased, as a result of which we have an approximate equality of the above indicators.

The fastest processor is the one with the most gigahertz. No, a processor with a lower core frequency may well outperform (in almost all applications) a processor with a large number of GHz.

Intel processors run cooler than AMD processors. This statement is controversial. After all, different models of both companies, consuming from 35W to 135W, also differ in the level of typical heat dissipation (TDP), which, by the way, is measured differently (the memory controller for AMD products is built-in, Intel places the memory controller outside the processor). But even with such significant differences in the method of taking readings, the difference between the heat dissipation of processors is not so significant.

The use of Hyper-Threading makes it possible to almost double the speed. Not always, sometimes the use of Hyper-Threading (a technology that allows the system to "see" two virtual ones instead of one physical processor core) can cause a decrease in performance. After all, the task manager tries to load two virtual cores evenly, but in fact there is one core that processes requests in turn. The result of this state of affairs is a general drop in productivity.

Fast processors and legs have more. This is not true. Processors with fewer pins are sometimes much faster.

Intel processors are smoother than AMD's dual-core processors. This statement is completely groundless, studies of the level of "smoothness" of the processors have not been carried out.

The speed of a dual-core processor is twice that of a single-core processor. This is not true, the increase in processor performance is not directly proportional to the number of cores.

Overclocking the processor can lead to its burning. The processor (video card and other components) can burn out due to the failure of the cooling system. The overclocking process itself cannot cause the above effect if the voltage does not exceed the norm.

Overclocking the processor does not improve performance. No, the results of tests of the computer in the nominal mode and after overclocking indicate that the performance is still increasing.

Operating the computer at one hundred percent load of the processor may lead to its burnout. Indeed, one hundred percent load on the processor and other components provokes the release of more dissipated energy in the form of heat. But with a good cooling system, nothing threatens your PC (at least for a long time, measured in months, and sometimes years).

Processors made by AMD cannot be overclocked. You can, like processors from other companies. There are comparative statistics on the performance of AMD processors in the nominal and overclocked states, which may serve as proof that this process is quite possible.

The processor and the system unit are one and the same. In fact, the processor is only a small (albeit very important) part, one of the components of the system unit.


Watch the video: How does a CPU work? (November 2021).