RAM is an acronym for random access memory, and it is used for the temporary storage of data and information your computer needs when running programs and performing operations. Also called system memory, RAM memory is volatile, meaning that the data stored using computer RAM is lost if the system's power is switched off. By contrast, data stored on internal hard drives is permanent and remains accessible until you erase the file.
Must-Have Features of RAM Memory
When asked, "How much RAM should I have?" most computer experts will answer, "As much as you can afford." The more RAM you have, the faster and more efficiently your computer will operate.
Generally speaking, you should have at least 1024 megabytes (MB) of RAM to run your computer efficiently, especially if you're using a newer operating system like Windows Vista or Windows 7. If you want a RAM upgrade, consider getting 2048 MB of RAM on your system—you'll see a dramatic improvement in your system's performance.
Special-use computers, such as a gaming computer, may require significantly more RAM to properly run their operations—sometimes as much as 1 or 2 gigabytes (GB).
RAM Upgrade Options
There are several specific types of RAM that you should know about if you're considering adding more system memory. Knowledge of these will help you make an informed choice when performing a RAM upgrade.
DDR RAM stands for "double data rate random access memory." It gives you twice the regular bandwidth of standard SD RAM (single data rate RAM), creating a much higher data transfer rate. DDR RAM will help your computer run much more quickly and is a good buy if you need to process large amounts of data with your computer operations.
DRAM is "dynamic random access memory." Structurally speaking, it is simpler and faster than static forms of RAM—it uses only one capacitor and one transistor per bit, allowing for the faster processing and retrieval of temporary data.
Top Manufacturers of RAM Upgrades
Major computer suppliers and manufacturers—including Dell, Gateway, Hewlett-Packard, Acer and Apple—offer various RAM products that are branded under their own names. However, you can also seek aftermarket RAM upgrades, as this type of hardware conforms to a universal standard.