On Tue, 2008-04-08 at 15:43 +0100, Anthony Metcalf wrote: > Alan McKinnon wrote: > > On Tuesday 08 April 2008, Anthony Metcalf wrote: > > > >> � � But what else? Will mtune=k6-2 make executables that will run on > >> an Athlon 64? Anyone tried this? Would I get to a point where I could > >> make -e world and have a nice working system? > >> > > > > k6 is 32 bit right? > > > > There's no sane upgrade path to amd64, looks like you are in for a > > reinstall > > > > > Yes, 32bit, and Athlon 64s ran x86 last I heard :) > > The 64bit argument is one I will have to consider more deeply, but > certainly in the near term, I won't gain anything from it, as I don't do > *any* of the things the extended memory range is good for, and don't > need more than 4GB RAM....... > > Later when I upgrade to a phenom, and stick 1GB RAM per core in there, > then yeah, I will probably recompile into 64bit, but that can be done in > a chroot, and migrated fairly easily I would expect, so long as the > system is running. >
It's not just the memory. Using 64bit gives your CPU some more registers thus (possibly) making him faster and it speeds up 64bit calculations (e.g. double precision floating point). I don't think you'll need this for your purposes but I just wanted to say: It's not just the 4 Gig.
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