Which is important: CPU cache and main frequency of industrial control computer

For industrial control computers, the CPU is the core processor, while the main frequency and cache are the core structure of the CPU, which will dominate the CPU's computing speed and processing performance. If you ask an industrial computer which is more important, the CPU cache and dominant frequency, in fact, strictly speaking, are both important, like being the right arm of the CPU. Why do we say that? Let's take a look through the following analysis.

Let's start with CPU caching. For our current mainstream industrial computer CPU, the I7-8700.

The main frequency cache parameters are as follows:

In the above parameter description, we can see that the cache size of the I7-8700 CPU is: 12MB. What does this mean?

Cache is a component used to reduce the average time required for a processor to access memory. It is a secondary register of the industrial computer CPU. Cache size means that when the processor CPU issues a request to the memory, if there is cache data in the process, our industrial computer will directly read the data from the cache after issuing instructions, instead of having to retrieve it from the memory and then read and process it again. This greatly improves the processing speed of the industrial computer. Therefore, cache size is one of the important indicators of the CPU. The larger the cache, the better the performance of the CPU.

Next, we will talk about the impact of this CPU dominant frequency on industrial control computers.

The main frequency of the I7-8700 CPU mentioned above is 3.2 GHz, which is even lower than the I3-3240 CPU compared to the I3-3240 CPU. Therefore, there is a misconception here that the higher the CPU main frequency, the faster the processing speed. There is no direct positive correlation between the two.

The dominant frequency only represents the task clock rate at which the CPU processes a certain period of time. For example, if the dominant frequency is 2GHz, it means that the number of processing instructions within a clock cycle is 2. If the dominant frequency is 3GHz, the processing speed is 1.5 times faster than the same time at 2GHz. However, these parameters refer to the case of the same core and the same thread. Of course, the dominant frequency is indeed one of the indicators that determine CPU performance parameters.

Therefore, whether the CPU cache or the dominant frequency of an industrial computer is more important is actually both important. Just like a chef, he must not only be able to cook delicious food but also understand color matching, both of which are indispensable. Only in this perfect combination can the best results be achieved. The relationship between the CPU's dominant frequency and cache is the same.

The above is what the editor shared today. There are more CPU parameters to share with you in the next article. Thank you for your attention.