Re: Do XP SP3 and updates slow down computer?
The main thing you are going to notice when adding programs or updates is that they will use hard drive space. In general the computer is not going to run slower because you installed an update. Most of the updates are simply patching security holes. In addition, SP3, like other service packs, is mainly a grouping of previous updates so that you can install them in one shot. Only a few new features are actually included. So most likely the system will not be slower. What's more, it appears you can uninstall SP3 if you encounter any issues.