W B Hacker wrote: > Marc Perkel wrote: > > >> Yes - we will go wide if need be using multiple servers in parallel. >> Going to start with an Intel Quad core and 8 gigs of ram. >> > > Only if you buy the top-end Xeon and MB 'glue' that can *use* over 4GB. > Remember, Intel 'commodity' CPU only have 64-bit *extensions*. > > NIC's and storage controllers don't DMA into the voltage regulator > chipsets - they need RAM and address space. > > For affordable Core-2 Quad, calculate as: > > (4 GB minus reserves for VGA and bus denizens) > > - e.g about 3 1/4 GB with decent VGA, 3 3/4 GB if headless. > > Any more RAM wanted, you'll be better off with AMD-64, UltraSparc, HPPA > (PA-RISC/Itanium), Power5/6, roughly in order of increasing cost. > > And it isn't just the architecture - the 'commodity' OS'en most of us > here use don't all handle the above-4GB RAM as fast as the below-4GB RAM. > >
So Bill, are you saying then that I should get an AMD CPU? I personally run dual core AMD with 8 gigs of ram and the 64 bit version of Fedora and I can use the full 8 gigs. Are you saying the Intel chips don't do that? -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
