Your question made me curious. I don't use lightroom but I do use Zerene
Stacker to focus stack images. Zerene reads an image into memory, layers
it onto the working image that it is building, and then loads the next
image. It also starts the process by quickly analyzing the whole set of
images to assess if they are stackable. So there is a fair amount of
both disk and processor work going on - I assume it reads each image
twice, once for the initial assessment and once to actually layer it
onto the stack.
I took 33 compressed 16 bit TIFF from the K3 - about 5.3 gigabytes of
images - and stacked them in Zerene Stacker using its PMax mode. In one
run I put the files on the SSD (Samsung 850 Pro 512 gb) and one pass on
the spinner (3 TB Seagate ST3000.) Both are SATA 600 devices.
The result - the stack took 6 minutes even to complete when using the
SSD, 5:58 to complete with the spinner. I'm not sure why the spinner is
faster, though probably within the margin of error.
I'm a little surprised. In synthetic benchmarks like Crystal DIsk Mark
the SSD is 2x to 100x faster than the Seagate drive. This system boots a
lot faster than the system it replaced. But, apparently reading the
files is a trivial part of the task of stacking them.
No idea how or if this would relate to LIghtroom performance, though.
Mark
On 5/3/2016 4:45 AM, Larry Colen wrote:
I'm researching a few questions right now.
The first is that I will need to buy a couple of 6TB drives for my raw
files. Does anyone know of any particularly good deals on such?
The second is that I've heard a lot of anecdotal evidence that an SSD
for the primary drive, and for the lightroom catalog will make a big
difference in performance. The one person I was able to find who
benchmarked this found no difference in performance:
http://www.computer-darkroom.com/blog/will-an-ssd-improve-adobe-lightroom-performance/
Has anyone done any actual benchmarking on this? SSDs do give a
benefit in latency, but do they have any higher of a data transfer
speed? What about PCI-Express SSD cards? Are they any better than
SATA SSDs?
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