How to see if the DDR memory is 333 or 400

Friend, I can tell you with great certainty that there are lower ones.

I summarized the following types of DDR memory:

Memory type, operating frequency, transmission bandwidth.

DDR200 100MHz i.e. PC1600) DDR266 133Mhz i.e. PC2100) DDR333 166Mhz i.e. PC2700) DDR400 200Mhz i.e. PC3200) As you can see from the table above, in addition to the DDR333 you said, there are DDR266 and DDR200.

Lower frequency memory.

The problem of how to check whether your memory is DDR333 or DDR400 is also easy to solve.

Then,Run after installing this software,The interface is very simple,You can see at a glance that there is an "SPD" option,Click on all the information of your computer's memory module to come out,In the end, it is DDR33。

Or DDR400, you can see at a glance.

Generally, you can see it when you look at the memory chip, or use software to test it, and you can see it in the BIOS. But sometimes the motherboard has limitations, so it's best to test it with software, the lowest DDR seems to be DDR200, the highest is DDR533, I don't know much about this, I haven't been on the market for a long time.

The minimum standard for DDR engineering is 200 and the highest standard is DDR400, but many products have produced DDR433 466 533

To detect whether the memory is DDR3 or DDR4, you can use the software to check the specific steps as follows:

<>3. After opening the software, click "Hardware Detection" above.

4. After coming to the hardware scan, you can see the button to scan, click to scan.

5. After waiting for ten seconds for a few friends, the relevant information of the computer will come out, and you can find the specific model of the computer memory below.

The first difference between DDR4 and DDR3 memory is the processor.

Every time a memory is upgraded, the processor must be supported. The memory of the Haswell-E platform is a four-channel design like the IVB-E SNB-E, and the DDR4 memory frequency natively supports 2133MHz, which is a significant improvement compared to the DDR3 native 1866MHz of the IVB-E. As a new flagship, Haswell-E has two biggest improvements, one is the 6-core upgrade to 8-core, and the other is DDR4 support.

The overall cost is quite high in the initial market launch, and it will not support both DDR3 and DDR4 memory, so it increases the barrier to entry for DDR4 popularization.

Difference 2 between DDR4 and DDR3 memory: Appearance.

DDR4 gold finger changes greatly.

Everyone pays attention to the above picture, the gold finger of Apacer DDR4 memory has become bent, and it is not designed along a straight line, why is this? In order to solve this problem, DDR4 designed the lower part of the memory to be slightly protruding in the middle and narrowing the edges. Smooth curve transitions at the high point of ** and the low point at both ends.

This design can not only ensure that the gold finger of DDR4 memory and the contact of the memory slot have enough contact surface, but also ensure that the signal transmission is stable, and at the same time, let the middle protruding part and the memory slot generate enough friction to stabilize the memory.

The interface position has also changed, with the "notch" in the middle of the gold finger being closer to the DDR3**. In terms of the number of gold finger contacts, the normal DDR4 memory has 284, while the DDR3 has 240, and the spacing of each contact has been reduced from 1mm to 1mm.

Memory difference between DDR4 and DDR3 is 3: Parameters

DDR4's most important mission is, of course, to increase frequency and bandwidth. Each pin of the DDR4 memory can provide 2Gbps (256MB s) of bandwidth, which is more than 70 more than the DDR3-1866.

The default frequency is DDR4 2133 CL15

DDR4 2133 Frequency Bandwidth Test:

From the perspective of Apacer's 32GB DDR4-2133 memory, the default frequency bandwidth alone is high, which shows the importance of DDR4 to improve system performance.

Then there are changes to other parameters, such as capacity and voltage.

DDR4 uses 3DS stacking packaging technology to provide up to eight times the capacity of a single memory. For example, the current common large-capacity memory has a single bar capacity of 8GB (a single chip is 512MB, a total of 16), while DDR4 can reach 64GB, or even 128GB. In terms of voltage, DDR4 will be manufactured using a process below 20nm, and the voltage will be reduced from DDR3 to DDR4, and the voltage of the mobile version of SO-DIMMD DR4 will be lower.

You can use CPU-Z, a small software, to detect, and the type of memory is shown in the circle in the figure below

If it is convenient to open the case, you can also tell it by looking directly at the label of the memory.

There is also the use of domestic Lu Daniang software can also be viewed.

Install a hardware detection tool such as Master Lu (this has a high accuracy rate and detailed parameters, unless a professional-level master passes the test by tampering with the data, it can generally be accurately detected).

Aida64, Master Lu......Many hardware detection tools are available, why bother to open the chassis, and it is not necessary that DDR3 or DDR4 will be printed on the motherboard when the chassis is opened (of course, there is a print on the PCB board).

The first step is to disassemble the computer; The second step is to pull out the memory module; The third step is to look.

Take effect. Memory. Right-click on the "My Computer" icon on the desktop (for Win7 system).

If you can't find it, you can find it in System & Security - System in the Control Panel. Click Advanced System Settings on the left. In the System Properties panel, in the Advanced tab, select Settings in Performance to proceed to the next step.

In the Performance panel, select the Advanced tab again, and there is a change underneath, click Change. In Virtual memory, select the Custom size option to allocate space for the virtual memory. After setting it up, click on it to complete the setting, and a prompt box will pop up, just restart the computer.

1. The memory module is the running memory of a computer running program, and the size of the memory is very important for the fluency of the computer. For most computers, adding memory can directly improve the smoothness of the computer.

2. DDR3 and DDR4 are two generations of memory, the fundamental difference is that the frequency is different, the starting frequency of DDR4 is the highest frequency of DDR3. The two slots are also different and incompatible with each other.

There is very little difference from SCP-2133's actual effect. You can also see from the numbers that the frequency is not much higher. Because the bandwidth of memory is generally excessive, it is like buying something, something is worth 100 yuan, and it makes no difference whether you have 1000 or 10000 on your body.