But each application you
run requires RAM too. And if you run two or more user sessions at the same
time, by using Windows??™ Fast User Switching feature, you??™ll need enough
RAM for all the applications and documents each user has opened.
Here are memory recommendations for good performance:
Single user, few applications If you??™re the only user of your PC, and
you run only a few applications (say Internet Explorer and Windows
Mail), 1GB RAM should be enough for Windows Vista and 512MB
should be plenty for Windows XP.
Single user, many or large applications If you??™re the only user but
you run large applications, aim for 2GB for Windows Vista or 1GB for
Windows XP.
Several concurrent users, several applications each If you share
your PC with several others and use Fast User Switching, aim for 2GB
for Windows Vista or 1GB for Windows XP.
Several concurrent users, many or large applications Get the maximum
amount of memory your PC can hold??”anywhere from 2GB to
4GB, depending on the model.
Memory generally comes in modules of 128MB, 256MB, 512MB, 1GB,
and 2GB. At this writing, 512MB memory modules are the best value for
most upgrades, with 1GB modules costing a little more per megabyte but
still affordable. 2GB modules are significantly more expensive, but prices are
gradually coming down.
4GB is the maximum amount of memory that 32-bit PCs can use. If you
have a 64-bit PC (for example, one with an Athlon64 processor) and a 64-bit
version of Windows, you should be able to use far more RAM.
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