It depends on whether your game would use it.
You could run task manager during a game and then alt-tab out and see how
much free memory you have left. If lots, then you don't need more.
On the other hand it's nice to have a mammoth disk cache for reentering
levels quickly.
Trainz didn't really start to be comfortable until I put in 2 gigs. But it
is a freak, because people can create their own worlds and they put in as
much detail as they like and then you need a Cray to run it. The worlds can
be fine art.
If you plan on using Vista 64 bit, I saw one list of what it would like and
it said 2 gigs. So if you're getting a matched set for dual channel it would
be a good idea to get it all at once so it's truly matched. Manufacturers
can change their memory a little under the same part numbers.
These days you could get 2 1-gig sticks for about what 4 512 sticks would
cost.
As you've noticed if you've checked in tast manager, XP starting up with an
antivirus and sound card uses about a quarter-gig. For some reason, it pages
some stuff to disk even when it's starting up in 2 gigs.
But you may not need 2 gigs.
--
Ed Light
Smiley :-/
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