How to choose a memory module
Published time: 2019-12-02
What do you look for when buying a computer memory module? Because there are so many types and brands of memory modules, consumers need to know the main configuration of the memory when choosing a memory module, especially when DIY is configured with a computer. Memory module, the following parameters should not be missed! Let's take a look at what to buy computer memory modules.
Many friends have misunderstandings about the memory capacity. Is the larger the memory the better? In fact, the size of this memory also needs to consider the CPU and the motherboard. The current mainstream motherboards support up to 64G memory, and the maximum memory supported by 64-bit CPUs is 128G. If the memory exceeds the motherboard's 64G, it has no meaning.
At present, the mainstream memory has 4G, 8G, and 16G. If you want to get higher memory, you need to increase the memory module. This depends on how many memory card slots your computer has, and we try to choose the memory module as much as possible. Select memory modules of the same brand and frequency to avoid incompatibility and the computer will not boot.
The algebra of memory refers to the "DDR1", "DDR2", "DDR3", and "DDR4" in the memory name. At present, mainstream platforms have been upgraded to DDR4. The more advanced the technology from DDR1 to DDR4, the higher the frequency, the more its operation The faster the speed.
Then the settings of different memory card slots are different. The design of DDR2 foolproof slot is centered, DDR3 is left, and DDR4 is right. When buying memory, you must know that your computer's memory card slot supports the generation before you place an order, lest it be inappropriate to buy it back.
Memory frequency and timing
In short, the frequency of the memory is like the valve of the faucet. The larger you open it, the faster the water will flow. Then, with the same capacity of the memory, the higher the frequency of the memory, the better the performance. This is the high-frequency memory that sells expensive The reason.
Then the frequency of memory from 1 to 4 generations is as follows:
DDR memory main frequency: 200 Mhz, 266 Mhz, 333 Mhz, 400Mhz
DDR2 memory main frequency: 400Mhz, 533 Mhz, 667 Mhz, 800 Mhz, 1066 Mhz
DDR3 memory main frequency: 1333 Mhz, 1600 Mhz, etc.
DDR4 memory 2133MHz, 2400 MHz, 2800 MHz, 3200 MHz
Timing refers to the delay time of the memory, the lower the timing at the same frequency, the better!
The memory channel is divided into single channel and dual channel. Single channel refers to that it can only read or write at the same time. For example, there is only one channel in a toll station that can only pass one car, so only one car can pass in and out. The dual channel refers to the use of different channels for memory read and write, which can be read and written at the same time, and the memory bandwidth is doubled.
Dual-channel memory is a technology that can improve the performance of the computer. To put it bluntly, the memory of the two is improved from a serial mode to a parallel mode to obtain a larger memory bandwidth and thus increase the memory speed. When the computer has insufficient memory, you can increase the memory and set up dual channels to solve the problem of insufficient memory.
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