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Computer memory is called Random
Access Memory (RAM). The
information stored in RAM can be
accessed randomly, rather than
sequentially. This means that
data can be found in any
location at the same rate of
speed. Other storage media, such
as CD-Rom and hard drives, must
wait while the drive spins to
the correct location before the
data can be accessed.
Computer memory is simply a
storage area for the program
code and the data that program
uses. Computer programs use RAM
to write and retrieve
information, allowing for fast
data retrieval and manipulation.
How Much RAM is Enough?
Simply stated, the answer is, as
much as possible. Keep in mind,
though, once you've reached a
certain upper limit, which is
determined by the computer
program(s) used, investment in
more memory will see a
diminished return.
Adding more memory is one of the
best ways to maximize computer
performance. If you compare 2
identical computer systems, the
one with the most memory will
over-all be the faster. More RAM
allows the computer to place
more program instructions into
memory, relying less on the
slower hard drive.
Think of 512 Megabytes (MB) as
the base standard for a modern
computer. With that you can
multi-task (run several
applications concurrently). For
instance, you can check email
and download MP3s, without
noticeable sluggishness.
Some applications, however, are
more memory-hungry than others.
Graphics programs, for example,
are notoriously greedy. Memory
needs are further exagerated by
the operating system used.
Microsoft Windows is far more
demanding than, say, Linux.
Currently, most PCs use Windows,
though.
Should you notice your computer
slowing down, consider adding
more memory. Before committing
to that option, however, try
de-fragmenting your hard drive
with a utility (program)
designed for that sole purpose.
A fragmented hard drive is a
common cause of stalled computer
performance.
Types of RAM
Right now DDR SDRAM is the most
popular memory module. DDR
stands for Double Data Rate,
which means that the memory can
be accessed twice per
clock-cycle. SDRAM, the acronym
for Synchronous Data Random
Access Memory, has been the
standard for memory modules for
nearly a decade.
To
add memory to your computer, you
must install modules with the
correct contact layout. Before
purchasing new memory, you must
know which type your motherboard
will accept. The most common
form factors are 168 pin, 184
pin and 200 pin.
You'll also need to know whether
there are slots available on
your motherboard. If all the
slots are already in use, you'll
have to replace 1 or all of the
current modules with higher
capacity ones. If there is at
least 1 free slot, you can
simply buy a new memory module
and insert it in the empty slot.
A
word of caution: whereas some
motherboards can accept either
SDRAM or DDR SDRAM, the 2 types
cannot be mixed. You must decide
on 1 or the other. Check the
motherboard manual first to
determine which kind of memory
your computer requires.
And finally, when you are ready
to install your brand new memory
module, make sure of 2 things:
the power is off (for your
safety) and you are electrically
grounded (for your computer's
safety).
About the author:
Ron King is a full-time
researcher, writer, and web
developer. Visit http://www.build-computer-now.comto
learn more about this
fascinating subject. Copyright
2005 Ron King. This article may
be reprinted if the resource box
is left intact.
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