Yes, going to SP3 is a good idea. 1 gb of RAM for XP is plenty for general use. You will want to make sure you don't have too many programs, services and other utilities loading at startup. AV and other malware products can consume a lot of resources especially if you have scans configured every time you start your PC. SP3 shouldn't negatively affect performance and should provide some additional security.
Hello - When SP3 appeared on the scene I installed it. But it slowed down my computer immensely, which led me to uninstalling it and reverting to SP2. Now whenever I enter an MS site I am being warned that their support will soon cease to whoever has only SP2. My question is: I have a 160 GB HD with a 1.8 processor and 1 GB of memory. I very seldom go into graphips or gaming ,but mostly sweep around the Web, changing sites frequently. Is 1 GB enough, or should I get 2 GB of memory if I once more try SP3, and does it really make a difference?