内存条1.2v和1.5v通用吗(内存条1.2v和1.35v能一起用吗)

Your computer motherboard supports memory modules with two voltages: 1.35 and 1.5.
According to the memory module specifications in the screenshot, you are currently using a 1.5v memory module.
1.35v is a low voltage version, so there will be the letter L after the specification name, such as DDR3L

Standard voltage and low voltage memory modules can generally be used interchangeably.
The difference between standard voltage and low voltage is only 0.15V, such as DDR3 with standard voltage of 1.5V and DDR3L with standard voltage of 1.35V, DDR4 with standard voltage of 1.35V and DDR4 with low voltage of 1.2V.

Memory sticks with different voltages can be used together, but the overall frequency will be reduced to a lower frequency memory stick, which can be formed into dual channels. Dual-channel memory mainly relies on the control technology of the motherboard's North Bridge, which is combined with the memory It has nothing to do with itself.

Dual-channel technology relies on the memory controller to function, which can theoretically double the bandwidth provided by two memories of the same specification.

The dual-channel system contains two independent and complementary intelligent memory controllers, both of which can operate in parallel. For example, when controller B is preparing for its next memory access, controller A is reading/writing main memory, and vice versa. This complementary "nature" of the two memory controllers can reduce effective waiting time by 50%.

Extended information

Dual-channel memory technology is a low-cost solution to the contradiction between CPU bus bandwidth and memory bandwidth. An affordable, high-performance solution.

Dual channels must be two sets of memory with exactly the same capacity and speed. New motherboard memory slots mainly come in two colors, and slots of the same color belong to one channel.

To achieve dual channels, you need to insert the memory of the two channels into the corresponding colors and slots. It can be two identical memories AB forming a pair; or there are four memories ABCD, with AB the same and CD the same. You can plug AC into the first channel and BD into the second channel.

Reference source: Baidu Encyclopedia-Dual-channel memory technology

It doesn’t have much impact, but it is best not to use different memory sticks, which will increase the power consumption of the notebook. .
1. The compatibility issue is a big problem, but it does not mean that it is not compatible if it is not the same brand. Users need to check it themselves.
2. The difference in voltage is mostly due to the different memory modules, which results in different frequencies of the memory modules.