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Different Speeds of Memory The faster the memory, the faster a computer operates. Memory comes rated at different speeds, and the faster the memory, the more it costs. Memory speed is measured in nanoseconds, and the lower the nanosecond rating, the faster the memory. For example, a 60 nanosecond chip is faster than an 80 nanosecond chip. Be sure that logitechcordlesskeyboard the memory you buy is as fast as the memory you''re replacing. Many newer, faster Pentiums come with RAM that can run at 100Mhz-the speed of the system bus. It’s always a good time to add random- access memory (RAM) to your computer. That’s because RAM is easy to install and can improve the performance of even the weakest computer. A couple of years ago, the average computer contained four megabytes (MB) of RAM. Now the standard is up to 16MB, with many new computers sporting 24MB or more. And users who play computer games or work with desktop publishing programs might have as much as 128MB of RAM.

DIMMs (Dual Inline Memory Modules) look a lot like SIMMs, but they come in a 168-pin format. They are usually a faster and higher-performance logitechcordlesskeyboard memory than SIMMs, and are used in Pentium PCs. They come in capacities ranging from up to 64MB and beyond. Step 4: Parity Versus Non-Parity Chips A SIMM or DIMM usually has nine chips of memory on it. Eight of those chips are used for the memory itself. The ninth chip is called a parity chip. The parity chip is used for error checking, to make sure that the logitechcordlesskeyboard other chips aren''t making any errors. Some computer systems require parity chips, while others do not. In general, Pentium-based computers and certain 486s don''t require parity memory. Parity memory usually costs more than non-parity memory. Check your PC or motherboard''s manual to see which kind of memory your PC requires.

MEMORY BASICS One of the best ways to increase the performance of your computer system is by adding more memory. With additional memory, you can have more programs running at the same time, and work on larger business files like spreadsheets and databases. Easily installed, RAM chips can speed up graphics applications, multimedia and, especially, games. HOW IT WORKS Before information can be processed by a computer, it must first be transferred to a special data storage area called RAM (Random Access Memory). RAM is connected directly to the processor by high speed data pathways. As long as your data is in RAM, the computer''s processor has almost instantaneous access to it. When the processor needs information that is not currently in RAM, it must be loaded from the hard drive and placed in RAM, a much slower process. So the more RAM you have, the higher your system''s overall performance.

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