There are two important considerations to be taken into account at the time of investing in more desktop memory and these are amount of memory and also type of memory. The general rule is that you should look at the different applications that will be run on your desktop and then determine how much memory is required to allow these applications work without slowing down unnecessarily. To find out how much memory is required to run an application you will need to look at the minimum as well maximum memory requirements and then make your choice.
In a majority of cases you will need to have that much desktop memory available that is at least as much as the application's minimum memory requirement though to get best use of the application you need to have as much as the application's maximum requirement. And if you want things to go even more smoothly you may even want to have about six gigabytes of memory.
In addition, it is also important for you to pick the right sort or memory as only then you can hope to get peak performance from your desktop. The right type of memory will mean plain sailing while the wrong kind will severely degrade your desktop computer's performance. So, pick the memory type very carefully.
Besides choosing memory of a certain type you should also know how each type works and in this regard you can expect DDR2 memory to provide speeds of about 800 MHz while the DDR3 can go up to 2000 MHz.
The speeds that are stated are actually not the actual speeds but they are relative to the kind of bandwidth you can expect from each memory type. You can easily add either DDR2 or DDR3 memory to your desktop but it is still important that you ensure that your desktop model can in fact support the type you wish to install. You should not add DDR3 memory to your desktop if your desktop model does not support this type as that can cause your system to crash. So, be sure to identify which memory type your desktop supports.
While picking desktop memory you should keep in mind the fact that you may need to expand the memory in future. A desktop generally has four and sometimes even six memory expansion slots; so, be sure to add the right amount of memory and then leave something for future expansions.
These are the most essential aspects to picking memory for your desktop and if you follow the tips provided above you should be able to add the right amount as well as type of memory to your desktop.