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RAM chips have continued to improve over time. As a result, there are a number of varieties of RAM, which are not reverse or forward compatible. Therefore, a newer computer using DDR3 could not use DDR2 from an older device.
RAM chips have continued to improve over time. As a result, there are a number of varieties of RAM, which are not reverse or forward compatible. Therefore, a newer computer using DDR3 could not use DDR2 from an older device.
RAM chips come in seeral diferent sizes and shapes. Probably the most commonly used today are DIMM (seen to the right) and the more compact [[SODIMM]] chips.
RAM chips come in seeral different sizes and shapes. Probably the most commonly used today are DIMM (seen to the right) and the more compact [[SODIMM]] chips.
==Memory usage==
==Memory usage==
In a typical computer, there are three basic kinds of memory. The first and fastest memory storage is offered by the registers. These are integrated into the CPU, and their information can be retrieved and updated incredibly quickly. The second kind is the RAM, which is also very fast, but slower than accessing the registers. Although the signals must travel across the motherboard to and from the CPU, the RAM is generally installed right near the CPU to expedite the process. After this comes the main memory, in the form of a hard drive or solid-state drive. This is an efficient form of memory which can contain all of the device's needed information, at a relatively low cost. In addition to these, external media can be used to offer further data storage.<br />
In a typical computer, there are three basic kinds of memory. The first and fastest memory storage is offered by the registers. These are integrated into the CPU, and their information can be retrieved and updated incredibly quickly. The second kind is the RAM, which is also very fast, but slower than accessing the registers. Although the signals must travel across the motherboard to and from the CPU, the RAM is generally installed right near the CPU to expedite the process. After this comes the main memory, in the form of a hard drive or solid-state drive. This is an efficient form of memory which can contain all of the device's needed information, at a relatively low cost. In addition to these, external media can be used to offer further data storage.<br />