Is the CPU frequency as low as possible, and is the CPU frequency as high as possible?

The clock frequency of the CPU is only one of the parameters.

The processing power of the CPU at the main frequency and the number of instructions processed per clock cycle efficiency.

The main frequency will directly affect the processing power of the CPU, but just like in the formula, there are two other factors that will also affect the processing power of the CPU, so it is not necessarily that the CPU processing power with a high frequency is necessarily strong.

The P4 has a very high clock speed, but its performance is not as good as that of the Core, which is much lower than it, because it executes too few instructions per clock cycle (lower than the Ben 2) and its long pipeline makes it inefficient (it will process a lot of invalid instructions).

In addition, in addition to computing power, the CPU has other aspects that will affect performance, such as data access efficiency (related to the size of the cache and the channel bandwidth of accessing memory).

The external frequency of the CPU is usually the operating frequency of the system bus (system clock frequency), the frequency at which the CPU transmits data to peripheral devices, and specifically the bus speed between the CPU and the chipset. The external frequency is the speed of synchronous operation between the CPU and the motherboard, and the external frequency of most of the current computer systems is also the speed of synchronous operation between the memory and the motherboard.

Before 486, the main frequency of the CPU was still in a low stage, and the main frequency of the CPU was generally equal to the external frequency. After the advent of 486, due to the continuous increase of CPU working frequency, some other equipment of PC (such as plug-in cards, hard disks, etc.) are limited by the process and cannot withstand higher frequencies, so the further increase of CPU frequency is limited. Therefore, frequency doubling technology has emerged, which can make the internal working frequency of the CPU become a multiple of the external frequency, so as to achieve the purpose of increasing the main frequency by increasing the frequency multiplier.

The frequency doubling technology enables external devices to work on a lower external frequency, and the CPU main frequency is a multiple of the external frequency.

In the Pentium era, the CPU external frequency was generally 60 66MHz, starting from Pentium 350, the CPU external frequency was increased to 100MHz, and the CPU external frequency has reached 200MHz. Since the CPU bus frequency and the memory bus frequency are the same under normal circumstances, when the CPU external frequency is increased, the exchange speed between the CPU and the memory is also increased accordingly, which has a great impact on the overall running speed of the computer.

This is due to the design concept, the new Core I series processors support turbo technology, which reduces power consumption by reducing the external frequency during normal loads, and automatically overclocks (by increasing the external clock) when encountering high-load programs to achieve maximum performance. This process is completely intelligent and does not require user involvement in the setup, which greatly reduces the difficulty of overclocking and also takes into account power consumption.

Of course, the higher the external frequency, the better, because it involves the frequency of the front end of the bus, and the external frequency of i7 is low. The i7 has an intelligent acceleration function. The 4 cores work independently, when only one core is used.

Automatically increase the external frequency by 5 times. That is, the core work is 133x4And so on.

When the 4 cores work at the same time, the external frequency is 266Even at 266 external frequencies, the main frequency is as high as that.

1. The higher the frequency of the CPU, the better, and the higher the main frequency, the faster the computer.

2. The higher the CPU frequency, the stronger the performance, which is based on the same generation architecture, the number of core threads, manufacturing process, cache, etc., when choosing CPU, you also need to look at the architecture, the number of core threads, manufacturing process, cache and other core parameters.

3. The higher the CPU frequency, the better the performance of the computer's trembling finger search, among which it is necessary to pay attention to other collocation.

4. With the increase of CPU frequency, its heat generation will inevitably increase with it, so the post-comic fruit is that the notebook will be hot during use, and too much heat will cause system instability, crash, etc.

When buying a CPU, many novice users must think that the higher the CPU frequency, the better, and the middle shout or the fact is that this is really the case, the following brings a detailed introduction, which can help you understand whether the higher the CPU frequency, the better.

A:CPU frequencyIt's notThe higher, the better

When used frequently, the biggest difference is between the twoThe amount of electricity is different

And when all else being equal,The higher the frequency, the higher the performance, generally seenThe parameters are all

2. As a very important parameter, infiltrate the main frequency and operation speedThere is no direct relationship, but it's important for promotion.

3. For CPUs of the same seriesThe higher the frequency, the more you sellThe faster the processing will be, for example, playing games is particularly smooth.

The difference between high-frequency and low-frequency CPU usage is obvious, and when high-frequency CPUs and low-frequency CPUs process the same task process at the same time, the high-frequency CPU usage is lower and the computing power is better.

In fact, the frequency is only one factor to measure the performance of the processor, and the factors that affect the performance of the processor also include:

1. Number of cores: In general, the more cores, the better;

2. Turbo frequency, when the computer processes less data, the CPU frequency will automatically decrease, when the data is processed a lot, the CPU frequency will automatically rise, Corei5 and i7 support the turbo frequency function, and some AMD processors also support the turbo frequency function;

3. Production process: The production process greatly affects the CPU performance, and the advanced production process is still stronger than the old process even if the number of cores and the main frequency are lower than the old production process.

It must be obvious.,The CPU usage rate of high-frequency is always 0%,100% of low-frequency casual games

The CPU is mainly about the size and speed of the running program, not to mention the big games. Running any program will make you noticeable.

The motherboard is the hardware that manages the support, the sound card is the listening effect, the graphics card is the 3D effect, and the CPU is the running program.

Hardware performance is always relative to software applications.

The installation process is generally to decompress the copy and register the system, which account for a limited amount of CPU if the card is stuck on the hard disk.

Large games are generally stuck on the graphics card, and when the memory is insufficient, the hard disk virtual memory will be stuck, and a few games with complex AI will be stuck on the CPU

If you want to know if the game you often play is stuck CPU, use a machine equivalent to the low-frequency U you want to match with the task manager to play the game for a while, and then cut out to see the CPU usage curve. For example, if the average usage rate of 1 minute is not under the load (for example, the average usage of a single core exceeds 90%), it means that it will not be stuck on the CPU.

Now the new CPU basically starts at 2GHz, whether it is a desktop or a mobile device, and the performance gap is not large, but the price gap is very large. So there's no need not to waste. It's better to go to an Internet café to play a game that really requires a lot of performance.