Posted 31 October 2006 - 10:31 AM
Your processor is capable of processing stuff using 64 bit addressing or 32 bit addressing. Your operating system will control how many "bits" you're using. In the case of XP there's 2 versions of XP Pro - the 32 and the 64 bit versions.
Also, if you'd have installed the 64 bit version, you'd know it. The drivers required are very different - and you'd have had to figure this out in order to get the 64 bit version to work for you.
Now, for the video card updates....
You don't "have to" update your video drivers as long as everything is working the way that you want it to. But, if you want more performance or you need some feature that the new driver offers - then an update is appropriate. Video display drivers are probably the most critical part of your system after the Operating System itself.
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