On Thu, Oct 20, 2005 at 08:40:56PM CDT, revDAVE <coolcat at hostalive.com> wrote: : : Can someone explain if all or just some apps will take advantage of quad : processors? All OSX-native apps are multi-threaded and thus benefit from any multi-proc system. However, particular apps that do not lend themselves well to threads won't see as much speed-ups (e.g. emulators). I want to say that Classic apps also suffer from this very same problem, but I'm not sure. -- Eugene http://www.coxar.pwp.blueyonder.co.uk/