Users who have bought a memory module must have had such an entanglement: In the limited capacity, is it necessary to buy a sufficient amount of memory or to buy a dual memory module? Today, let's talk about this issue.
With regard to the working principle of memory, there is not much explanation here. Computer white only needs to remember that the computer lacks it, and its quality will directly affect the speed of the computer.
Back to the original question, the menu root is still divided into two groups. The answer is of course the latter. As for why, we can answer the relationship between memory frequency, timing, and voltage.
The memory frequency is generally known directly from the memory box or label. For example, the frequency of the memory box on GALAXY HOF EXTREME has been marked as 3600MHz. Of course, we can also use CPU-Z, GALAXY Aurora Phantom Lighting System, etc. Memory software to view
Under normal circumstances, the memory frequency determines the memory performance. The higher the memory frequency, the stronger the memory performance and the faster the operating speed.
Regarding the memory timing, it is also one of the key indicators to measure the performance of the memory bar, indicating the time needed for the memory to process the data.
Therefore, the smaller the timing parameter, the faster the memory can process data. At this point, it is exactly the opposite of the memory frequency. This is illustrated by the delay comparison of the GALAXY HOF DDR4 series memory:
DDR4-3200 CL 14-14-14 34
CL14 delay calculation (1/3200MHz) *14=4.37ns
DDR4-3600 CL 17-18-18 38
CL17 delay calculation (1/3600MHz) *17=4.72 nanoseconds
DDR4-4000 CL 19-25-25 45
CL19 delay calculation (1/4000MHz) *19=4.75ns
It can be seen that the lower the memory timing, the lower the delay. If the timing is fixed, the higher the frequency, the lower the delay and the faster the memory speed!
Voltage, each generation of memory has a standard value. The current mainstream DDR4 memory default voltage is 1.2V, DDR3 is 1.5V, DDR2 is 2V start.
Compared to frequency and timing, the presence of memory voltage is not as strong as the first two. However, it does not mean that it is not important, especially when overclocking.
After introducing the three important parameters of memory, the next thing we will mention is the memory bandwidth. It is the most important factor in why we choose dual-root memory.
Memory bandwidth calculation formula: Bandwidth = Memory clock frequency x Number of memory bus bits × Multiplication factor / 8. Single-channel memory controller bandwidth is 64 bits, 8 binary bits are equivalent to 1 byte, Converted into bytes is 64/ 8=8, multiplied by the memory operating frequency, you can get the bandwidth result of the memory. For example:
DDR4-4000: 4000MHz*64bit*2/8=64000MB/S
DDR4-3600: 3600MHz*64bit*2/8=57600MB/S
If it is a single-channel memory, the bandwidth speed will be halved accordingly:
DDR4-4000: 4000MHz*64bit/8=32000MB/S
DDR4-3600: 3600MHz*64bit/8=28800MB/S
So, choose The reason for choosing dual-root memory is to make full use of the advantages of dual-channel memory, which can double the memory speed (ideally).
However, if you can set up dual channels, you don't look at the memory, but look at the motherboard. Generally, dual-channel motherboards are supported. The memory slots have the same color and are easier to identify, such as the GALAXY Z370 GAMER motherboard.
In addition, it should be noted that if the memory is to be combined with two channels, it is recommended to use the same frequency and same type of the same brand, so that the compatibility will be better.
