What should I do if the available memory remains unchanged after adding a memory module?

Mixed plugging is possible, as long as the parameters of the two memories are about the same, in fact, as long as it is not dual-channel, the parameters of DDR memory are similar, generally put the latest maximum capacity in bank0, and then bank1, that is, your 512MDDR400 is placed in bank0 slot (the one closest to the CPU), and 256DDR333 is placed in bank1. Of course, if you mix and plug in, the DDR400 will automatically drop to 333 to run, but the increase in capacity can make up for the lack of speed, and the speed is almost unfelt, if you are running large software, large memory will definitely prevail. You can tell by the speed at which you open a word file.

If you feel that your computer is unstable, or much slower, then it may be incompatible, so it's best to use just one DDR400. This is not only related to memory, but also to motherboard chips.

Of course, it's a DDR512MB, the first two are different brands, if they are mixed together, it will lead to the processing speed of the computer!!

I have personal experience, the computer used to be as slow as a snail, and then I heard that installing memory can improve the running speed, so I bought two new memory, and mixed with the original one memory, but the speed was not much faster, and later I learned that different brands were mixed to reduce a certain speed.

You can try it if the brand is different.

The frequencies are all different, so it's better not to try it, hehe.

This one mainly depends on the motherboard. Actually, this thing is a bit complicated, and my advice is to ask the seller of the new memory.

You need to check the maximum memory in the advanced crack monitoring item of the system configuration, and enter the total memory capacity after the increase is added.

Detailed steps: 1. Right-click on the taskbar and click "Start Task Manager". Open Performance to see if the total amount of physical memory has increased by the total.

2. If there is no increase, check my computer properties to see if the system supports it, the 32-bit system can only recognize about 3G memory at most, and more than 4G can only use about 3G.

4. Open the advanced options under System Configuration - Boot.

5. Tick the box in front of the maximum memory and enter the total memory capacity after the memory is increased. OK on it.

1. When the memory is lower than the minimum requirements of the computer and the memory becomes the bottleneck of the computer hardware, increasing the memory at this time can significantly improve the performance of the computer.

2. When the memory has met the needs of operation, adding the memory at this time will not have an obvious effect.

3. Your computer, the fourth-generation Core i3 processor, 8G memory, no need to increase the memory at all, no matter how much memory you add, its performance will not be improved in the slightest.

8G memory is enough, and the most direct improvement solution is to change the graphics card.