I have no idea how many MPix. I've only ever used film, so I don't think of it in those terms. How can I calculate MPix from DPI?
Any thoughts on CPU parallelism vs speed? Cheers, Laurence. On Wed, Jan 6, 2016 at 11:32 AM Roman Lebedev <lebedev...@gmail.com> wrote: > On Wed, Jan 6, 2016 at 2:19 PM, Laurence Rochfort > <laurence.rochf...@gmail.com> wrote: > > Hello all, > Hi. > > > > > I'm building a new PC with scrounged components. I have the option of > either > > a dual Xeon E5645 with up to 96GB RAM, or an i5-3470 with 8GB RAM. > > > > The storage is a PCIe x4 SSD. > > > > You can see a comparison here: > > http://cpuboss.com/cpus/Intel-Xeon-E5645-vs-Intel-Core-i5-3470 > > > > I'll mostly be dealing with medium format and 4x5 drum scans, so TIFF > files > > that are from 200MB to 1GB. Mostly I'll be doing crop, rotation, colour > and > > zone adjustment. > Yes, but how much MPix? > 50 MPix? 100 MPix? > > (very rough rule of thumb, lower estimate: for x pixel image, you want > at least 3 * 4 * x * 4 bytes memory; that is, for 20MPix = 960 MB) > > If more than ~50MPix, then you *absolutely* need as much RAM as you can > get. > I doubt that GPU would be of any help at those sizes though... > > > > > Could people advise me on which would perform best? > > > > Many thanks, > > Laurence. > Roman. > > > > > > ------------------------------------------------------------------------------ > > > > _______________________________________________ > > Darktable-users mailing list > > Darktable-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/darktable-users > > >
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