Cpu dual core and quad-core differences detailed explanation
When we buy a computer or mobile phone, they will indicate the number of cores of the CPU processor in the parameter column, the difference between them is directly reflected in the price, in general, the four-core CPU is generally more expensive than the dual-core CPU. Today, Xiaobian will introduce you to the difference between dual-core and quad-core.
First, basic knowledge of dual and quad-core
Dual core and quad-core refers to the number of cores in the CPU processor, where the core can also be called the core, which is the most important part of the CPU processor, because the functions of the CPU are to be realized through the core. The number of different cores directly affects the speed and efficiency of the CPU when performing tasks.
We can understand the meaning of dual and quad-core in terms of numbers. In simple terms, dual core is that there are two cores in the CPU, that is, two physical cores are fused into a CPU. Quad-core refers to the number of cores in the CPU consisting of two dual cores, and there are four computing cores in the entire CPU.
Second, specific differences between dual and quad-core
A dual-core processor is a processor based on a single semiconductor, with two processor cores that perform the same function. In other words, two physical processor cores are integrated into one core to form a dual-core CPU. The dual-core processor is powerful and can significantly improve the computing performance of a PC, and this feature is especially prominent when performing multi-task operations. Dual-core processors double the total number of instructions that can be executed per clock cycle compared to single-core processors, which greatly enhances the performance of the processor, especially when processing multi-tasks, and has greater advantages over single-core processors.
The quadcore consists of two double nuclei, each of which shares 4M L2. From a theoretical point of view, when both are not fully loaded, the results should be little different. When both sides reach full load at the same time, the quad-core should perform twice as well as the dual-core. The maximum increase of physical quad-core relative to physical dual-core is about 80%, and the maximum increase of super-threaded quad-core relative to physical dual-core is about 40%, and the difference in the increase of the two is about twice.
The difference between dual-core and quad-core is first reflected in the loading speed when handling multiple tasks. We can understand that when opening four programs on a computer or mobile phone, if it is a quad-core CPU, then its loading speed is faster than a dual-core CPU. In addition, the difference between them is also reflected in the processing of large amounts of data, the ability of the quad-core CPU to process large amounts of data is stronger than the dual-core CPU.
If the dual-core CPU and quad-core CPU do not reach full load, then the performance gap between the dual-core CPU and the quad-core CPU is not very obvious. However, if the full load is reached, the performance of the quad-core CPU is theoretically twice as good as the dual-core CPU, if it is a physical quad-core, then its performance should be improved by about 80% compared to the dual-core, if it is a hyper-threaded quad-core CPU, then its performance should be improved by about 40% than the dual-core. To use an image metaphor, the dual-core CPU is equivalent to two people team up to play the BOSS, the quad-core CPU is equivalent to four people team up to play the BOSS, of course, the efficiency of four people team up is more high.