on 2013-11-30 20:48 Stan Halpin wrote
Larry, Steve - thanks for your comments. In a way they are not very helpful
because I am looking for compelling reasons why I should go with the Mac Pro
and not the Mini or iMac.
well, that comes down to what's compelling for you; if you are doing a mountain
of work, and the machine will make a difference, go for it; the 10x7" cylinder
does seem very alluring, though (i keep thinking i could use one, then coming
back down to earth)
if you are using mainly Lightroom, then those super-GPUs won't make much
difference to your photo work
This is something I have wondered about. I have seen a few references that show
a rapidly diminishing gain in LR performance as one moves from 2 to 4 to 6 to
8-core processors, and I figured that LR or any other current software would be
unable to fully take advantage of any new CPU or GPU. I have been looking at
the Perfect Photo Suite to use as an adjunct to LR, and their set-up
instructions go into modifications to settings based on available cache memory
on the GPU. And so I was thinking just maybe this time bigger would be better,
not only for that program but also for LR...
you are mixing different questions here:
1) does Lightroom benefit from GPU on Mac?
--> no (though the basic OS support of any app does benefit)
2) does Lightroom benefit from multiple CPU cores on Mac?
--> i can't find a solid reference on this, but it sounds like your own
research found that any benefit is limited
3) does other software benefit from these?
--> yes, Aperture gets much benefit from the GPU, and is well equipped to
utilize multiple cores; some operations of Photoshop benefit as well; many
video-editing tools (video being the primary market for the Mac Pro) are very
strongly dependent on GPU performance
and i'll add 4) will these matter more to LR in the future?
--> Adobe has had several development cycles to add GPU acceleration to
Lightroom, and hasn't, so i can only guess it's not a priority; by the time it
does make a difference, any machine from today will have been superseded
--
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