The Kingston KTD-DM8400B2G 2 GB DDR RAM unit has 667 MHz and a DIM 240 pin module. The Kingston 2 GB RAM module can significantly increase the capability of a computer. This is because modules like the Kingston KTD-DM8400B2G allow the computer to handle software with more intense system requirements. For example, games that require high end graphics will need modules like the Kingston 667 MHz. Games and other software programs say on the back of the package how much RAM is required. If the computer doesn't have enough RAM, for instance if there is only one Kingston 2 GB RAM module and the program requires 4 GB to run, the computer will need to be upgraded before the software can be used. The Kingston 667 MHz RAM module is relatively easy to install, even for an amateur. Installing the KTD-DM8400B2G RAM module will also likely increase the speed of your computer, especially if you’re running an operating system that is memory intensive. This makes the Kingston KTD-DM8400B2G a valuable alternative to buying a completely new computer.