My WindowsXP Pro system presently has 640 Megs of PC2100 RAM
installed
and seems to be running fine.
In an effort to tweak the last bit of speed out of a slightly aging
system (Epox 8Kha+ motherboard), I'm wondering whether upgrading the
RAM to 1Gig of PC3200 RAM would be worthwhile.
There is no answer to this question that's right for everyone.
Despite what some people may tell you, the only correct answer is
"it depends."
Additional memory provides a benefit only to the extent that it
keeps you from using the page file. With 640MB, you may already
have more RAM than you need, and any more will do nothing for
you. How much memory *you* need depends on what apps you run, but
almost everyone needs at least 256MB for decent performance. For
some people, for example those who edit large photographic
images, more than 256MB--even much more--can be required for good
performance.
If you are currently using the page file significantly, more
memory will decrease or eliminate that usage, and improve your
performance. Go to
http://billsway.com/notes_public/winxp_tweaks/ and download
WinXP-2K_Pagefile.zip and monitor your pagefile usage. That
should give you a good idea of whether more memory can help, and
if so, how much more.