What parameters do I need to see to upgrade my memory

What parameters do I need to see To upgrade my memory? First, simply review the partitioning of memory:

DDR era

An upgraded version of SDRAM, faster access speed. There is not much innovation in technology than in the previous generation of products.

DDR2 Times

A simple overview is the memory of a revolutionary era of development, a new pretext for the model, new storage particles, a new process to create a more sophisticated structure. But in the 2011 it seems almost to be able to exit the market, the newly installed machine is basically impossible to choose to install this kind of memory. Users who are currently buying are also simply unwilling to upgrade the platform to install the latest DDR3 memory. So not to do the length of the description, is in the meaningless vomit bad ...

DDR3 Times

DDR3 is a new design based on DDR2:

1.8bit prefetching Design, while the DDR2 for 4bit prefetching, improve the width of the read to reduce the load of excessive read frequency.

2. Use point-to-point topology to optimize access structure for more efficient processing of data

3. Use the production process below 100nm to reduce the voltage.

Memory selection on the basic look at the 3 major items.

The first consideration is the frequency, because the different frequency of memory plugged in together or the motherboard does not support the motherboard will produce compatibility problems.

For example, your motherboard supports 800/1066/1333 and the like, not that your motherboard can plug in these different specifications at the same time.

For example, the first one you insert is 800MHz, and the second one is 1066MHz. The result is 1066 down to 800 running, which is a "bucket effect" how much your motherboard supports, in the motherboard's box and instructions are detailed on the label.

Also, memory brands are best aligned, or different processes used by different vendors may be incompatible even when the parameters are consistent.

The second is capacity, although the larger the memory capacity, the better. But to be honest, the average user has more than 4G of memory available. Also, a 32-bit WINODWS system can only support up to 3.25G of memory capacity. No larger system can be identified. So, if you want to upgrade to more than 4G, you must use a 64-bit system.

I don't know how many bits your system is, so I can only tell you there is this limit. You can right-click on "My Computer" and choose "Properties" to write how many bits of your system are in it.

The third is the CL delay, which is more professional than the words and Mandarin to explain. Take a look at the instructions below and I'll try to make it simple.

The CL reaction time is another indicator of the fixed memory. CL is the abbreviation of CAS latency, which refers to the latency time required for memory access data, and simply the response rate of memory to the CPU's instructions. The general parameter values are 2 and 32 kinds. The smaller the number, the shorter the time required to represent the reaction. This is a production process caused by the problem, so in the purchase of brand memory, this is a factor to be observed. (Represents the quality of the manufacturer)

There is another explanation: memory latency can basically be interpreted as the time that the system waits for a memory response before it enters the data for the access operation to be ready.