The CPU can reach 14mhs

1. 1. The meaning of CPU calculation once is that CPU performs "bit calculation" once, for example, 2 + 3 = 5, and binary is 0010 + 0011 = 0101. If there are three bits in total, the computer will calculate three times. 2. As for what this number is related to, that is, the higher the CPU frequency, the more the number of operations per unit time

2. I54590 is a four core, four thread, three-level cache is 6MB. The i7 4790 is a 4-core 8-thread, 3-level cache of 8MB. CPU is not only determined by the dominant frequency.

3. Only overclocking can meet your requirements, but overclocking also has risks. Pay attention to the CPU voltage. Overclocking also depends on the CPU system and motherboard workmanship. Some motherboards have no overclocking option. It depends on the situation.

4. Ensure that the temperature rise in the range of 30 degrees is generally stable. That is to say, the temperature of the CPU is 65 degrees. If the maximum temperature is 35 degrees in summer, the temperature of the CPU is allowed to rise to 30 degrees. And so on, if your ambient temperature is now 20 degrees, the CPU should not exceed 50 degrees. Of course, the lower the temperature, the better. No matter how much you overclock, don't make your CPU over 30 degrees above the ambient temperature< Now I want to add a few points:
1. Temperature and voltage
the increase in temperature is e to the fact that the calorific value of u is greater than that of the radiator. Once the calorific value and heat dissipation are in balance, the temperature will not increase. The calorific value is determined by the power of u, and the power is proportional to the voltage. Therefore, to control the temperature well, it is necessary to control the core voltage of CPU. However, it is easy to say that if the voltage is too low, it will cause instability, especially when the overclocking amplitude is large. Most of the time, when the CPU temperature does not reach the critical value, the blue screen of the system will restart. At this time, the main factor affecting the stability of the system is not the temperature, but the voltage. So how to set the voltage is very important in the limit of overclocking. If it is set high, the radiator will not hold. If it is set low, the u will not hold
2. The temperature measurement methods of different motherboards are not the same, even the motherboards of the same brand and model, e to the difference of the distance between the temperature probe and the CPU, the measured temperature also varies greatly. Therefore, it is unscientific to say how much temperature is safe in general. In my opinion, if you run super PI or 3dmark at higher room temperature in summer, you can pass the test as long as you can. You don't have to trust the temperature data of software test too much
3. What is stability? This has always been a hot topic that we like to discuss
computer is an electronic proct, and the coordination of its components is extremely delicate. No one can say that my computer is absolutely stable, and stability is relative. Overclocking in a reasonable range can resist the catastrophic consequences of most minor instability factors; In the extreme edge of hardware, overclocking, a very small current fluctuation may bring a series of follow-up reactions, and eventually your screen may turn blue or black:) how much frequency is stable? This problem only aims at the specific situation, and there is no formula to apply. It can only rely on experience and personal practice. So here's another reminder to some friends who ask "how much can my computer overclock?" they'd better try it according to the scientific overclocking steps!

5.

M means mobile. The processor is designed for laptops with low power consumption and calorific value. It is suitable for laptops.

u means ultra low voltage CPU. Its calorific value and power consumption are lower than those of L series

H stands for high voltage and high main frequency. As long as the graphics card and memory are good enough, there is no pressure on any game

x means extreme, which means the one with the highest performance

L means low voltage, which refers to the low-voltage version of CPU. Compared with the Standard Version, the calorific value is only about half

Q means Quad, which emphasizes that this CPU is four core, and the processor marked with Q only has the CPU of notebook series, because the processor of notebook is generally al core. It seems that only i7 has QM model

extended data :

generally, the higher the dominant frequency is, the faster the CPU processes data

main frequency of CPU = external frequency × Frequency multiplication coefficient. There is a certain relationship between the main frequency and the actual operation speed, but it is not a simple linear relationship

therefore, the main frequency of the CPU has no direct relationship with the actual computing power of the CPU, and the main frequency represents the oscillation speed of the digital pulse signal in the CPU

in Intel's processor procts, we can also see such an example: 1 GHz Itanium chip can perform almost as fast as 2.66 GHz Xeon / Opteron, or 1.5 GHz Itanium 2 can perform about as fast as 4 GHz Xeon / Opteron. The operation speed of CPU depends on the pipeline, bus and other performance indicators of CPU

6. First: the main frequency, that is, the clock frequency of the CPU, which is simply the working frequency of the CPU. Generally speaking, the number of instructions completed in a clock cycle is fixed, so the higher the main frequency, the faster the CPU speed. However, e to the internal structure of various CPUs are not the same, so can not fully use the main frequency to summarize the performance of the CPU. The external frequency is the working frequency of the system bus; Frequency doubling refers to the multiple of the difference between the CPU external frequency and the main frequency. The formula is: dominant frequency = external frequency × Second harmonic generation. Generally speaking, Celeron 433 and PIII 550 refer to the main frequency of CPU< Second, the speed of memory bus, or the total line speed of the system, is generally equal to the external frequency of CPU. The speed of memory bus is very important for the performance of the whole system. Because the development of memory speed lags behind that of CPU, in order to alleviate the bottleneck brought by memory, there is a secondary cache to coordinate the difference between the two. The speed of memory bus refers to the working frequency between CPU and L2 cache and memory
Third: working voltage. Working voltage refers to the voltage required for the normal operation of CPU. The working voltage of early CPUs (386 and 486) was generally 5V e to their backward technology. When they developed to Pentium 586, it was already 3.5v/3.3v/2.8v. With the improvement of CPU manufacturing technology and main frequency, the working voltage of CPUs had a graal downward trend. The latest Coppermine proced by Intel has adopted the working voltage of 1.6V. Low voltage can solve the problem of excessive power consumption and excessive heat, which is particularly important for notebook computers
Fourth: coprocessor or mathematical coprocessor. In the CPU before 486, there was no built-in coprocessor. Since the main function of coprocessor is responsible for floating-point operation, the floating-point operation performance of 386, 286, 8088 and other microcomputer CPUs are quite backward. Since 486, CPUs have generally built coprocessors, and the function of coprocessor is no longer limited to enhancing floating-point operation. Nowadays, the floating-point unit (coprocessor) of CPU often optimizes multimedia instructions. For example, Intel's MMX technology, MMX is the abbreviation of "multimedia extended instruction set". MMX is a new technology adopted by Intel in 1996 to enhance Pentium CPU in audio-visual, graphics and communication applications. 57 MMX instructions are added to CPU, which improves the ability of multimedia processing by about 60%
fifthly: pipeline technology, superscalar. Pipeline is Intel's first use in 486 chip. The assembly line works like an assembly line in instrial proction. In CPU, an instruction processing pipeline is composed of 5 ~ 6 circuit units with different functions. Then an x86 instruction is divided into 5 ~ 6 steps and executed by these circuit units respectively. In this way, an instruction can be completed in a CPU clock cycle, so the CPU operation speed is improved. Super pipeline means that the internal pipeline of a certain type of CPU exceeds the usual 5-6 steps or more. For example, the pipeline of Pentium Pro is as long as 14 steps. The more steps (stages) the pipeline is designed, the faster it can complete an instruction, so it can adapt to the CPU with higher working frequency. Superscalar means that the CPU can execute more than one instruction in a clock cycle. This is hard to imagine on 486 or previous CPUs. Only Pentium CPUs have this superscalar structure; This is because more and more modern CPU uses RISC technology, so it will superscalar CPU
sixth: out of order execution and branch prediction. Out of order execution means that the CPU adopts a technology that allows multiple instructions to be sent separately to the corresponding circuit units for processing, not in the order specified by the program. Branching refers to the nodes that need to be changed when the program is running. There are unconditional branches and conditional branches. Unconditional branches only need CPU to execute in order of instructions, while conditional branches must decide whether the program running direction changes according to the processing results. Therefore, it is conditional branches that need "branch prediction" technology to deal with
seventh: L1 cache, also known as L1 cache. The built-in cache in CPU can improve the efficiency of CPU. The capacity and structure of the built-in L1 cache have a great impact on the performance of CPU, but the cache is composed of static RAM, and the structure is complex. When the CPU chip area is not too large, the capacity of L1 cache can not be too large. Cache with write back structure. It provides caching for both read and write operations. The cache with write through structure is only effective for read operation. Write back cache is used in 486 computers
eighth: L2 cache refers to the cache outside the CPU. Pentium pro's L2 and CPU run at the same frequency, but the cost is expensive, so Pentium II runs at half of the CPU frequency, with a capacity of 512k. To rece costs, Intel proced a CPU without L2 called Celeron
ninth: manufacturing process: the manufacturing process of Pentium CPU is 0.35 μ m, PII and Celeron can reach 0.25 μ m, the latest CPU manufacturing process can reach 0.18 μ m, and copper wiring technology will be adopted, which can greatly improve the integration and working frequency of CPU.

7. Never. From several hundred hertz to now, 4.5g Hertz can't represent the speed. It has many influences. But now is definitely not the peak of CPU. Software is more powerful than CPU. Any CPU can be fully loaded

8. 3GHz
Intel
core 2 Quad Core
q9650 (bulk)
￥ 2300
[Beijing]
business quotation: ￥ 2266
to
￥ 2880
applicable type: desktop CPU
CPU series: core
2
Quad
CPU core: yorkfield
number of cores: Quad Core
main frequency (MH: 3000MHz
bus frequency: 1333mhz
number of pins: 775Pin
frequency multiplier Times: 9
slot type: LGA
775

9. Since the other party is responsible for the collision,
the other party's insurance company asked you to go to their repair shop to repair the car,
you don't need to pay for it yourself,
it should be their insurance company.