There are reasons. Dennis points you to one whitepaper. Most of the reasons involve software and device drivers, so without knowing what software and what devices you have no one can say.
"Chris" <chris01[ at ]newsgroups.nospam> wrote in message news:e9%23RPONnHHA.4628[ at ]TK2MSFTNGP06.phx.gbl...
[Quoted Text] > I've never used a 64 bit os before but I just upgraded my computer and > purchased Vista. > My question is:is there any reason not go go with Vista 64? > > TIA > Chris > > >
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