- Post Publish: 2023-01-13
- Categories: Knowledge
- Updated:
- Posts by Mina Xiao
Difference between CPU and GPU.
Mina Xiao
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You can run a PC without a GPU, but a PC without a CPU won’t be able to do much of anything. Nevertheless, there are benefits of having a GPU in your system—for example, and probably most importantly for many who are reading, having a GPU should greatly increase your FPS in games.
What is a CPU?
The CPU, also called the central processing unit, is the computing core and control core of a computer. An electronic circuit within a computer executes the instructions of a computer program by performing the specified basic arithmetic, logic, control, and input and output operations.
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To put it simply, the CPU is equivalent to the heart of the computer. Its ability directly affects the running speed of the entire computer. Most programs must go through its calculations, including viruses of course. If its usage rate is too high, It will slow down the entire computer.
The main functions of the CPU.
1. Processing instructions:
This refers to the execution sequence of instructions in the control program. There is a strict order among the instructions in the program, and they must be executed strictly in accordance with the order specified by the program to ensure the correctness of the computer system.
2. Executing operations:
The function of an instruction is often realized by a series of operations performed by components in the computer. According to the function of the instruction, the CPU generates the corresponding operation control signal, sends it to the corresponding components, and then controls these components to operate according to the requirements of the instruction.
3. Control time:
implement timing on various operations. During the execution of an instruction, when and what operation should be strictly controlled, so that the computer can work in an orderly manner.
4. Processing data:
that is, performing arithmetic and logical operations on data, or performing other information processing. Its function is mainly to interpret computer instructions and process data in computer software and execute instructions. All operations of the computer are controlled by the CPU, and the performance index of the CPU directly determines the performance index of the microcomputer system.
What is a GPU?
GPU is an auxiliary processor that mainly handles the work related to graphics calculation in the computer and presents the data better on the display.
The graphics processing unit (English: Graphics Processing Unit, abbreviation: GPU), also known as display core, visual processor, or display chip, is a special graphics processing unit in personal computers, workstations, game consoles, and some mobile devices (such as wifi android tablet, smartphones, etc.) to do image and graphics-related operations on the microprocessor.
The main role of the GPU
GPU is the “brain” of the graphics card, which determines the grade and most of the performance of the graphics card, and is also the basis for the difference between 2D graphics cards and 3D graphics cards. 2D display chips mainly rely on the processing power of the CPU when processing 3D images and special effects, which is called “soft acceleration”.
The 3D display chip concentrates the three-dimensional image and special effect processing functions in the display chip, which is the so-called “hardware acceleration” function. The graphics chip is usually the largest chip (and the most pinned) on a graphics card. Most of the graphics cards on the market now use graphics processing chips from NVIDIA and AMD-ATI.
GPU mainstream suppliers
* Intel: Intel is not only the world’s largest CPU manufacturer and seller, but also the world’s largest GPU manufacturer and seller. Intel’s GPU is now completely integrated graphics, used for Intel motherboards and Intel notebooks. If it is only calculated by the number of sales, the integrated GPU released by Intel along with its motherboard occupies more than 60% of the entire GPU market.
* nVidia: Now the largest manufacturer and seller of independent graphics cards, it has the Geforce series for civilian use and the Quadro series for professional use. Its GPU has general-purpose computing, PureVideo high-definition video technology, PhysX physics acceleration, Optimus smart graphics switching, etc.
* AMD (ATI): The world’s second-largest manufacturer and seller of independent graphics cards, its predecessor are ATI. It has the civilian Radeon series and the professional FireGL series. In terms of sales volume and sales profit, AMD’s graphics card is still slightly behind nVidia, but the two are on par, with a gap of only a few percentage points. Its GPU has Stream general-purpose computing, ATI Video Converter video transcoding, UVD high-definition video technology, three physical engines of Havok, Bullet, and Pixelux DMM, etc.
What is the difference between a CPU and a GPU?
| CPU | GPU | |
|---|---|---|
| 1 | CPU stands for Central Processing Unit. | While GPU stands for Graphics Processing Unit. |
| 2 | CPU consumes or needs more memory than GPU. | While it consumes or requires less memory than the CPU. |
| 3 | The speed of the CPU is less than GPU’s speed. | While GPU is faster than CPU’s speed. |
| 4 | CPU contains minute powerful cores. | While it contains more weak cores. |
| 5 | CPU is suitable for serial instruction processing. | While GPU is not suitable for serial instruction processing. |
| 6 | CPU is not suitable for parallel instruction processing. | While GPU is suitable for parallel instruction processing. |
| 7 | CPU emphasis on low latency. | While GPU emphasizes high throughput. |
The CPU is the brain of a computer, containing all the circuitry needed to process input, store data, and output results.
The CPU is constantly following instructions from computer programs that tell it which data to process and how to process it. Without a CPU, we could not run programs on a computer.
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