About the memory module, please consult, plus thanks 20

There is a big difference between different types of memory, now the price of SD is the highest, followed by DDR, DDR2 is cheaper, it is estimated that what you are looking at is DDR2, and your memory is DDR generation, of course, it is more expensive, but it is less than 200 yuan, and it is more than 100 points.

It depends on what kind of memory you're in. If it is the DDR400 generation, then it is about 120. If it is the second-generation DDR800, the 2G is also about 120.

But if it's SD memory, that is, the memory used for PIIII, that one is expensive, and there is basically no brand new one. There is also a notebook one, which is more expensive if it is not generic.

It depends on how many generations of DDR it is, and the memory of the DDR generation is more expensive than that of the second generation, but two hundred is also a little more expensive, about 120.

You're probably in a small city, right? **It's normal to be more expensive than online, and you can buy it online if you can.

It's not so expensive at all, you'd better ask a few more, so it's better to compare, in addition, it depends on how many generations you have DDR, and there are not many generations now, so it's normal to be expensive, but it's more than 100 points, I'm in Guangzhou, and I helped a friend buy it.

It depends on what kind of memory your machine's motherboard supports.

DDR2 (DDR667, DDR800) memory is cheap, the previous DDR1 (DDR400) memory is very expensive, and even the second-hand 512M memory is more expensive than the new DDR2 512M memory!

Then you might as well buy a 1g or 2g one:

Kingston 1g is only 75 pieces.

Kingston 2g is only 115 pieces.

Kingston is a good brand.

Not so expensive, 512 for a maximum of 100 pieces.

It's too expensive, buy it online, mine is bought online, it's very good to use.

It's just advertising on the Internet.

Look at a few more Now the merchant is the grandson when it is sold, and the uncle is the uncle when it is sold

DDR 512M 120 Yuan 1G 200 Yuan.

DDR2 512M 75 Yuan 1G 150 Yuan.

Don't be deceived.

The same size, the same speed, the same model, the same manufacturer, the same number of particles (all single-sided, or double-sided memory particles) or called the same batch. In this case, multiple memory bars are ideal. Basically eliminate the problem of compatibility.

Under normal circumstances, only pursue: the same size, the same speed, the same model can be. Namely:

The original 2G single bar, when adding memory, also add 2G single bar; If the original speed is 1067, add 1067; Add DDR3 to the original memory. Because your original memory is 2G DDR3 1067 memory, it is best to add 2G DDR3 1067 to add memory. This guarantees a successful opening of the dual channel without incompatibility.

Of course, it is better for manufacturers to pick the same.

It is not recommended to increase the speed, because it is easy to be incompatible, and even if it is no problem, the dual channel can only be installed at a slow speed to run. For example, if your original memory is 1067 and you add 1600 memory, you can only run at 1067 speed under dual channels.

Or in this way, you sell the original 1067 memory, and directly add two new ones of the same 1600 memory 4G, that is, 4gx2 DDR3 1600, so that basically the merchant will send the same batch of memory to you, because you directly buy two. This is the best way to guarantee speed and compatibility.

Your notebook, plus 2G is more appropriate, it is best to choose the same brand, the compatibility is the best, the frequency can be 1333 or 1600, if you can't find the same brand, you can also choose common brands, such as ADATA, Apacer, Kingmax, compatibility is also good.