On Wed, Oct 1, 2008 at 7:54 AM, Linuxguy123 <[EMAIL PROTECTED]> wrote:
> [SNIP] > > Questions: > > a) On machines that do not allow PCI remapping, is the processor > physically disallowed from accessing that 4GB of RAM ? Ie have the > address lines from the processor been disconnected from that RAM due to > being connected to the PCI devices ? > > b) How do XP and Vista handle this ? Are they limited to 3GB of RAM > too ? > > c) I am running the 32 bit version of Linux. Would it make any > difference to my RAM access if I ran the 64 bit version ? > > Thanks > Maybe someone can word this better than I but here it goes. The memory limit is not really tied to the OS "TYPE" (i.e. Windows XP/Vista, Linux, etc) but more to the architecture (32-bit vs. 64-bit). As far as I'm aware, all 32-bit OS's will have this limitation and all 64-bit OS's will not. You can get Windows XP, Vista or Linux in both 32 and 64-bit flavors. So to answer your question (c), yes, if you switch to a 64bit version of Linux you will be able to use all 4GB. Richard
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