As long as the CPU usage is not above [50%] all the time, it is considered normal. When no other programs are running, it is normal for the CPU usage to be less than [15%].
CPU usage is actually the CPU resources occupied by the program you are running, indicating how the machine is running the program at a certain point in time.
As long as the CPU usage is not above 50% all the time, it is considered normal. It is normal for the CPU usage to be less than 15% when no other programs are running.
The CPU determines its execution behavior based on the instructions fetched from the memory. During the decoding phase, instructions are broken down into meaningful pieces. Values are interpreted into instructions according to the CPU's instruction set architecture definition.
Part of the instruction value is the operation code, which indicates what operations are to be performed. Other values usually provide information necessary for the instruction, such as the target of an addition operation.
If your CPU usage changes between 0%--75%, this is normal. But if it is often above 90%, or even 99.9% or 100%, the reasons are as follows:
1. Anti-virus software causes malfunction. Because the new versions of KV, Kingsoft, and Rising have added protection against web pages, Random monitoring of plug-ins and emails undoubtedly increases the burden on the system.
2. The driver has not been certified, causing CPU resources to occupy 100%. A large number of test versions of drivers are flooding the Internet, causing hard-to-find fault causes.
3. Viruses and Trojans cause a large number of worms to replicate rapidly within the system, causing the CPU resource usage to remain high.
Extended information:
What does the cpu main frequency mean?
The cpu main frequency is how the cpu core works Clock frequency (CPU Clock Speed). What is usually said is the MHz of a certain CPU, and this MHz is the "cpu's main frequency". Many people think that the main frequency of a CPU is its running speed, but this is not the case.
The main frequency of the CPU indicates the speed of the digital pulse signal oscillation in the CPU, and has no direct relationship with the actual computing power of the CPU. There is a certain relationship between the main frequency and the actual computing speed,
, but there is currently no definite formula that can quantify the numerical relationship between the two. Because the computing speed of the CPU depends on various performance indicators of the CPU's pipeline.
Since the CPU frequency does not directly represent the computing speed, under certain circumstances it is likely that the actual computing speed of a CPU with a higher frequency will be lower.
For example, most of AMD's AthlonXP series CPUs can achieve the higher frequency CPU performance of Intel's Pentium
4 series CPUs at lower clock speeds, so the AthlonXP series CPUs are Named by PR value.
Therefore, the main frequency is only one aspect of CPU performance, and does not represent the overall performance of the CPU.
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