CPU clock can be said to be the most important when it comes to the power of a CPU (processor chip, processor …).
However, one thing that I see many people wondering is, CPUs with fewer cores often have higher clocks than multi-core CPUs.
More specifically, Intel’s Xeon series has a multiplier of up to 12 or 24, or even higher, but it has a lower clock speed than a low-core CPU like 4 or 8 common cores.
So what is the reason, why is it like that? And does it affect the power of a CPU or not?
Yes, and to make it easier to learn, we will take Intel as an example in this article, AMD or any other CPU, the principle is the same.
Ah, but do you know the concept of clocking yet ◉◡◉, only then will we understand the problem!
#first. What is CPU clock?
// CPU clock, aka CLOCK SPEED, FREQUENCY…
For those of you who don’t know, the CPU’s clock is the CPU’s processing speed. The CPU is likened to the human brain, even the smallest operations, such as a mouse click, must go through the CPU for it to be processed first.
So, obviously, the higher the clock, the more powerful the CPU, the faster and smoother the processing of information.. For example, as shown in the image below, the clock speed is ~2.2 GHz (executs 2.2 billion cycles). period per second), also not very strong 🙂
#2. Xeon Chips and Core i . Chips
These are two typical CPU lines and also for two different customer segments.
- Xeon is a CPU line aimed at systems that work continuously 24/7 for a long time, they are often used in Render or Sever systems in general.
- As for the Core i series of chips, it is a popular CPU line, it is used by ordinary users who do not have too high demands on workload as well as work continuously for a long time.
=> Most personal computers use Core i series or CPUs of such nature.
#3. Why is the clock speed of Xeon chip often lower than Core i?
High clocks aren’t everything: As I said above, Xeon CPUs are designed for servers (servers) that operate 24/7, continuously working with high-volume tasks. So they have many cores.
This means that even though Core i CPUs have high clocks (i.e. they are capable of fast processing), they cannot respond when there is a large amount of work to be handled at the same time.
Yes, then the advantage of multiple cores will come into play, it will handle many tasks at the same time (or in other words, multitasking), which is also the advantage of Xeon even though they have lower clocks. .
The higher the clock, the hotter it gets: First of all, you need to understand that, the base clock of CPU lines is the clock on each core, and the boost clock is usually only 2-3 cores is a lot.
An example to make it easier for you to imagine: 4-core 8-thread CPU with a clock speed of 2.3 Ghz, with a turbo boost of 3.0 Ghz, it means that in normal mode, these 4 cores will be clocked at 2.3 Ghz. But at the turbo level, only 1 or 2 cores can be pushed to 3.0 Ghz.
Why is this happening? Well, it’s simply a matter of temperature and current supplied to it.
The higher the CPU clock, the larger the power required according to the law of conservation of energy, electrical energy is not lost but will be converted into heat.
Speaking of which, surely anyone who has ever learned about OC CPU (over clock CPU, also known as CPU overclock) is already too clear :), the essence of this job is to push the CPU clock to the highest possible. per core and what needs to be done is to increase the power supply and cool down the CPU.
Thus, with the more cores CPU, the more power is needed, and you also want a high clock speed, the CPU overheating is very easy to happen.
Although the Xeon CPUs themselves are a lot more expensive than the Core i CPUs, in the long run it is a good investment.
As I said, Xeon CPU was born to work, almost no time off. Only work creates results, its operating principle is the same as that of humans
In this article, I take Intel’s Xeon CPU as an example of the reasons why multi-core CPUs often have lower clocks than less-core CPUs. These analyzes also apply to any CPU currently on the market.
Anyone, once they have chosen for themselves a multi-core CPU, they will do it for work purposes and their work requires processing a huge data source.
And multi-core CPU can meet that ability, stable speed, cool to use and durable over time even decades even though you have to work 24/7.
The article has personal analysis and comments, so if there are any shortcomings, I hope you can comment by leaving a comment below this article, so that we can discuss more. Thank you !