Xiaobai lecture hall: is dual channel memory really necessary in non game books?

[pconline chat] Hello, I’m back! Last time, we gave a lower latitude explanation to the various terms of the current game book hard disk e-commerce publicity: article links. Today, let’s talk about the impact of single and dual channel memory on our actual use. Let’s first say the conclusion: dual channel memory can indeed improve the performance of notebook computers, but in actual use, dual channel memory is not as powerful as advertised, and the specific effect is also < / P > < P > memory is actually like a transit station for computer running data. Let’s suppose a scenario: when device a wants to access memory for data transmission, it finds that device B is reading and writing memory. In a single channel memory device, a must wait for channel B to read and write before it can work. In dual channel memory, device a may access through another channel. < / P > < p > the advantage of dual channel is that it improves the memory bandwidth, effectively alleviates memory access conflicts, and there are all kinds of test data in dual channel, which is obviously better than single channel memory. So why do we say that the actual effect of dual channel memory is not so good? < / P > < p > in short, dual channel memory only improves bandwidth, but not frequency. Previously, I found that many friends have compared the single and dual channel memory to the single and double lane of the road, which is vividly and simply expressed: the dual channel memory improves the efficiency of data transmission because it improves the width of the road. < / P > < p > of course, from the literal meaning, the dual channel memory should be greatly improved, after all, the lanes have doubled directly. But we often neglect that it is not only the number of lanes, but also the speed that affects the transmission efficiency. Under this premise, it is inappropriate to say that the impact of single and dual channel memory can be ignored when the total number of vehicles is small and the speed is fast enough. < / P > < p > however, dual channel memory can improve the performance of the core graphics card very much, because most core displays do not have video memory. Then the core display needs to access the memory through the memory controller and use the memory as the video memory. When the core display is running at full speed, the total amount of data increases. At this time, if the core display needs to access memory, it has to conduct a PK with the CPU, so the advantage of dual channel memory is shown. < / P > < p > this is also the reason why ice lake upgraded the memory controller from 2x64bit to 4x64bit in the 10th generation core. Because the performance of gen11 core graphics card has been greatly improved and memory access is more frequent, the memory controller can directly double to improve the core display performance. < / P > < p > we use the same computer to test the single and dual channels. Through the test results, it is not difficult to find that the performance improvement of dual channel memory is not big, and it is still in the performance test link of large data transmission. For simple daily office, single and dual channel memory has less impact on computer performance. < / P > < p > dual channel memory often uses non board memory, which is convenient for later users to upgrade and repair. This is very suitable for users who are familiar with computer hardware and like to “toss” their own computers. < / P > < p > it is undeniable that dual channel memory has great advantages in alleviating access conflicts due to doubling bandwidth. In other words, dual channel memory is more likely to be released by non gamebook owners, but the performance ceiling is too high for some people. Continue ReadingASMC, a lithography maker, was one of TSMC’s 14 top suppliers last year

Author: zmhuaxia