My memory is 800 and I check with CPUZ and only 371 5 when fully loaded

Memory frequency should be determined by four factors and three formulas!

1.Crossover coefficient (explained at the end).

Frequency. 3.External frequency. 4.Frequency multiplication.

1: CPU frequency = external frequency * frequency multiplication.

2: Memory frequency = Actual memory running frequency x 2

3. The actual running frequency of the memory = the current CPU frequency and the frequency division coefficient.

Take the AMD Athlon™ 3000+, for example.

1) By default, the main frequency of 200 external frequency multiplier 9 and crossover coefficient 6

Actual running frequency of memory =

Memory frequency = 300 × 2 = 600

That is to say, if you don't overclock by default, the memory works at 600MHz, and it's wasted with 667, hehe.

2) I exceeded the external frequency of 223 and the main frequency crossover coefficient was 6

Apply the above formula - the actual running frequency of the memory = the current CPU frequency and the crossover factor.

Actual running frequency of memory =

Memory frequency = that is, when you exceed the 223 external frequency, the memory is running at the standard frequency.

3) DDR800 memory.

If you want to run the memory at 800

Then the memory frequency is 400

400 = CPU clock speed 6 = CPU clock speed =

That is to say, your U is Athlon 3000+ You have to overspeed it to get the most out of the DDR800.

To sum up, the 4 factors that are determined at the beginning and the three formulas are my own understanding, and there should be no mistake (the U octave of different AMD is different, and it needs to be recalculated, and the above is only limited to AM2 Athlons 3000+).

Among them, the crossover coefficient is the most difficult to explain in detail below

Memory frequency division coefficient", this coefficient is the basis for how much the memory frequency actually works, to put it in layman's terms, there is a formula: the actual working frequency of memory = the current frequency of the CPU Memory de-frequency coefficient, this coefficient is the memory part of the CPU-Z or everest software that "front-end bus: memory", is something like "CPU 9", this "9" is what we call this coefficient, it is a positive integer not less than 5, and its calculation method is as follows:

Crossover coefficient = unconditional rounding up (default external frequency of CPU * current frequency doubling of CPU and current asynchronous frequency of memory).

The unconditional rounding up means that when the frequency division coefficient is a decimal place, it is not rounded, but an integer that is exactly larger than it, for example, such a coefficient, the integer that is exactly larger than it is 10, that is, as long as a decimal place a little larger than 9 should be taken to 10, it is not difficult to see that unconditional rounding up can avoid the memory working frequency when the default external frequency is asynchronous will be higher than the highest standard frequency of memory.

Hope mine can help you.

<> the same. See for yourself.

The CPUZ test shows the result multiplied by 2 which is the current frequency of your memory.

This is normal, indicating that your memory module is DDR2 800 and only half of it is displayed on CPUZ. You don't have to worry.

This is normal, the memory has to pass data once on each of the rising and falling edges of a data clock cycle, so the actual frequency of the memory is multiplied by 2, i.e. 400 2 800.

Your CPU is 5000+!! 2600 7 = So 800 is correct to show this way!

Memory frequency = main frequency crossover coefficient * 2

Main frequency = external frequency * frequency multiplication.

Crossover coefficient = main frequency * 2 memory frequency set in BIOS (direct advance 1 with remainder) 5000 + memory frequency at default frequency = 2600 7 (set to 800 in BIOS) * 2 =

Check to see if there is a project to set the external frequency in the motherboard BIOS, and set it to 200.

There may be a compatibility problem.,It's good that you can automatically reduce the frequency.,My computer memory is set to 800 and the screen is black.。

yes, this one is multiplied by two. My 2400 is also showing 1199

This is the same as multiplying the GDDR5 memory frequency on GPU-Z by four.

The memory frequency*2 detected by CPU-Z is the actual frequency of the memory, and the frequency*2 detected in the memory column is the actual running frequency of the memory. If your test is about 800Hz and 1600 memory, then the test result is no problem.

The motherboard is a slot of the generation 667, and the memory display rate is halved, and the memory of the 800 must also be limited by the motherboard. But it works. No, it doesn't.

It may be that the motherboard does not support it, give me a screenshot of the motherboard column to show me.

It is possible that it is a fake.

It also depends on whether the processor and motherboard support 1600 frequency,,, if only the memory is 1600, if you can't use it, it will be reduced to 800 use!

The frequency of the memory is only half shown in cpuz.,1333 normal should be 667.,See;

Your CPU is E5400;

Because the front-side bus of your CPU is 800MHz

DDR3 1333 can only work up to 800MHz, that is, the memory is suppressed to 800MHz.

Originally, the E5300 does not support DDR3 (the motherboard supports it. Because the front-side bus of your CPU is 800MHz

DDR3 1333 can only work up to 800MHz, that is, the memory is suppressed to 800MHz.

Frequency! That's it!

For memory overclocking, according to different motherboards, different overclocking schemes can be adopted, and memory overclocking has a direct or indirect relationship with the CPU, generally speaking, there are two ways to achieve memory overclocking: one is memory synchronization, that is, adjust the CPU external frequency and make the memory work with the same frequency; The second is memory asynchronous, that is, the memory working frequency is higher than the CPU external frequency.

2 Memory asynchronous overclocking.

In memory synchronization mode, the memory runs at the same speed as the CPU external frequency. Memory asynchronous, on the other hand, means that there can be a certain difference in the operating frequency between the two. This technology allows the memory to operate at 33MHz or 3:, above or below the system bus speed

5 (memory: external frequency), which can alleviate the "bottleneck" of memory that is often limited by memory when overclocking.

3 Increase the voltage to help overclock.

The memory frequency has increased, so the memory power consumption has also increased, but by default, the memory voltage parameter in the motherboard BIOS is set to the value of the memory standard frequency, generally speaking, in order to ensure the stability of memory overclocking, we need to increase the memory voltage, many motherboard BIOS settings provide the memory voltage adjustment function, and the memory voltage adjustment level is generally adjusted gradually at or for the grade, the more subtle the memory voltage parameter adjustment, the more helpful it is for overclocking.

CPU has a direct or indirect relationship, generally speaking, there are two ways to achieve memory overclocking: one is memory synchronization, that is, adjusting the CPU external frequency and making the memory work at the same frequency; The second is memory asynchronous, that is, the memory working frequency is higher than the CPU external frequency.

Select the second advanced frequency setting.

This setting adjusts not only the memory frequency, but also the processor. However, memory overclocking has a lot to do with the CPU.

Start by turning the memory frequency setting to manual.

Then it can be seen from the figure below that the frequency divider can be divided into a total of 6-18 a total of seven files, the corresponding memory frequency is DDR3-800 to DDR3-2400, the specific algorithm is that the CPU external frequency in the above figure is 133, through the memory frequency division, multiply the two is the final frequency.

Adjusted to 10 respectively

The display memory frequency is DDR33-1333

The frequency is set to 12

The display memory frequency is DDR3-1600

Of course, the author's motherboard is calculated in this way, and there are more frequency divisions, while the general motherboard does not have too many choices, so it is also necessary to overclock the external frequency of the CPU, which can increase the frequency of the memory, but it is not recommended for rookies to do this, because it is not a problem for the general motherboard to support DDR3-1600.

In addition, some AMD motherboards are more direct in frequency selection, such as DDR3-800, DDR3-1333, DDR3-1600, etc., so users can choose directly.

Set in the BIOS, memory frequency = CPU external frequency x multiplier, if you can't, it is not recommended that you set the BIOS! This affects other data, and in addition, cpuz sees the core frequency of the memory, if you are DDR2 the memory is x2 equals 800.

The test is 400, multiplied by 2 is your strength frequency.

AMD's CPU, the main frequency, is 5000+!

This is AMD's unique memory divider mode, and if you want to use 400MHz, you need to overclock! Just go into the BIOS and adjust the external frequency to 215!

I guess it's the limitation of the memory itself.,If you change it to DDR2, it's 742.,It's okay.,My DDR31333 is like this.。

This data is 800 2 = 400. (within the normal range).