Change the CPU frequency, why does the memory frequency also change?

The meaning of noky's formula is correct, but it is not clearly expressed that AMD's frequency division is based on the CPU and the initial memory frequency set by division, to obtain the frequency division coefficient, and then to the secondary coefficient for frequency division calculation, which can be divided into a few, such as the landlord's 5400 and 800 sub-cases, most of them can not be divided, so that the fractional part of the division coefficient obtained by division is rounded, and the integer part +1 is obtained if the landlord exceeds 3G, the memory is set to 400, and the division coefficient is calculated. It can not be divided, according to the above method to obtain the frequency division coefficient of 8, calculated by this frequency division coefficient, when the excess to, the calculation memory frequency is 3100 8 is equal to about 388 (the crystal oscillator can not be very accurate, so the memory frequency is also slightly deviated), when the excess to, 3200 8 is equal to 400... It's a bit messy.,I don't know if the landlord understands.。

AMD is an integrated memory controller, the memory frequency takes the HT bus, and automatically adjusts according to the CPU frequency, and there is no direct relationship with the external frequency, there is a formula for memory frequency = CPU frequency divided by (doubling frequency 2), and the inexhaustible is +1

Even without overclocking, AMD's dual-core Athlon 64 processor has only one or two standard frequencies that can make the memory work. For example, DDR2 800 or DDR2 667The rest of the memory working frequency is generally in between, and the memory works at more than 630 megabytes at the standard frequency of 4200+ units, which is DDR2 667 strips.

Oh, I misunderstood.,It seems that it's impossible to overpoint to 3G while keeping the memory frequency at 400.。。。

Didn't exceed AMD's, don't draw conclusions, hehe, i's don't lock times.

Here's how to adjust it.

1.Restart the computer and press the "DEL" key to enter the motherboard BIOS settings interface.

2.Select Advanced Chipset Features, then Systen Clock, and then CPU Multiplier.

3.Adjust to the desired octave, press "F10" to save and exit the host BIOS settings, and the setup is complete!

Here's how to adjust it.

1.Restart the computer and press the "DEL" key to enter the motherboard BIOS settings interface.

2.Select Advanced Chipset Features, then Systen Clock, and then CPU Multiplier.

3.Adjust to the desired octave, press "F10" to save and exit the host BIOS settings, and the setup is complete!

At present, CPUs sold in the general market will lock the frequency multiplier, so the CPU frequency multiplier can only be adjusted down, not up.

Here's how to turn it up: Restart the computer and press the "DEL" button to enter the BIOS settings interface of the motherboard. Select Advanced Chipset Features, then Systen Clock, and then CPU Multiplier.

Adjust to the desired octave, press "F10" to save and exit the host BIOS settings, and the setup is complete!

Select Sync All Cores for the three CPU core doubling options.

Auto is the default CPU frequency multiplier change, which is a common option for everyone, and it is the frequency of all cores to set the frequency multiplier at the same time.

Percore can be set to how many cores are multiplied under different loads.

Specific per core is the maximum number of octads that can be sold for each core.

Briefly. Originally, there was no concept of frequency doubling, and the main frequency of the CPU and the speed of the system bus were the same, but the speed of the CPU is getting faster and faster, and the frequency doubling technology came into being. It allows the system bus to operate at relatively low frequencies, while the CPU speed can be infinitely increased by frequency doubling.

Then the calculation method of the CPU main frequency becomes: the main frequency of the outer frequency x the frequency of the multiplier. That is to say, the frequency doubling refers to the multiple of the difference between the CPU and the system bus, when the external frequency remains unchanged, the frequency doubling is increased, and the CPU main frequency will be higher.

The default frequency multiplier of a CPU is only one debate, and the motherboard must be able to support this frequency multiplier. Therefore, it is important to pay attention to this when buying a motherboard and CPU, if the two do not match, the system will not work. In addition, many of the CPU multipliers have been locked and cannot be modified.

No, there is a limit to the frequency of all hardware, and beyond the limit, there will inevitably be a blue screen of death and cannot be started.

Memory overclocking can only be improved by adjusting the external frequency, which is a frequency that all hardware will relate to, and a frequency that affects the whole body.

Therefore, if you want to overclock stably, you need to reduce the bus rate and CPU frequency of the motherboard while continuously increasing the external frequency.

This thing is dangerous, it's best not to change it, if you want better performance, you might as well buy a better CPU. If you want to try, go to the school's computer room to try it, if you exceed, the computer will not be able to turn on