Computer Memory Guide
Computer memory has never been cheaper and better! While the options can be unlimited, make sure that the computer memory you buy is compatible with your system! This guide helps you make a wise choice.
The first question is how much computer memory your system requires. Look for the requirements printed on the box of your operating system and application programs. Be clear about what more memory can or cannot do. It can make your applications run faster and it cannot increase the speed of your dial-up network!
If you do not want to end up wasting precious pounds on incompatible computer memory, go through the manuals that came with your computer or motherboard very carefully. These would tell you the kind of memory your system support including the type, size and number of memory modules. The number of modules you require again depends on your system. It is best to go for the least number of computer memory modules to increase the potential for future upgrades.
The main types of computer memory available in the markets today are given below:
SIMM (Single In-line Memory Module)
A SIMM stores a single row of DRAM, EDO or BEDO chips. One SIMM can contain several chips.
DIMM (Dual In-line Memory Module)
A DIMM stores two rows of DRAM, EDO or BEDO chips and contains twice as much memory on a circuit board of the same size.
SODIMM (Small Outline DIMM)
An SODIMM is smaller than a normal DIMM and is commonly used in laptops.
DRAM (Dynamic Random Access Memory)
This is one of the most common types of computer memory. It can only hold data only for a short time-span and are measured by storage capability (rated in megabytes) and access time (rated in nanoseconds). The lower the access time, the faster will be the execution. Please note that DRAM chips require two CPU wait states for each execution.
Direct Rambus
This is arguably the fastest computer memory. It provides a transfer rate of up to 1.6GBs yielding an 800MHz speed over a narrow 16-bit bus.
Tip: Computer memory should be compatible with your system. Go for the largest and fastest memory that you can afford!
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