Thank you for purchasing through links and ads on this site.
OWC / MacSales.com...
diglloyd Deal Finder...
Buy other stuff at Amazon.com...
Get up to 16x more storage and 2x the speeds of the original drive
Handpicked deals...
$1299 $999
SAVE $300

$3899 $3499
SAVE $400

$1498 $1098
SAVE $400

$2299 $1599
SAVE $700

$1598 $998
SAVE $600

$5500 $5000
SAVE $500

$2600 $2100
SAVE $500

$2798 $2498
SAVE $300

$1299 $950
SAVE $349

$1999 $1399
SAVE $600

$1299 $1124
SAVE $175

$2299 $1799
SAVE $500

$1299 $999
SAVE $300

$3397 $2697
SAVE $700

$3297 $2797
SAVE $500

$1999 $1199
SAVE $800

$3399 $2199
SAVE $1200

$400 $300
SAVE $100

2017 iMac 5K: Real World Photoshop: Make Multi-Res Image Series

MPG recommends 64GB OWC memory (big savings!) in: 27" Retina 5K Display, 4.2 GHz Intel Core i7 (Skylake), 1TB Flash, 8GB memory, AMD Radeon Pro 580 Graphics Card (8GB).

View iMac 5K at B&H Photo and see MPG’s computer gear wishlist. Not sure which Mac to get or how to configure it? Consult with MPG.

This test is as real world as it gets: it is my most-performed photography job, and one that idles further activity while it runs*. The task is long-running (minutes), so it is the #1 bottleneck to your Lloyd’s photographic workflow, that is, preparing multi-resolution image series in a layered Photoshop document, typically aperture series or ISO series or similar.

This scripted task creates a range of output JPEGs of varying resolutions for each layer, typically to 8 layers, with a dozen image sizes for each of those layers, from 432 pixels to 6048 pixels.

Photoshop is not good at using more than one or two CPU cores for general tasks, and this shows: the 4.2 GHz CPU of the 2017 iMac 5K trounces the fastest Mac Pro you can (cannot) buy: the 3.3 GHz 8-core Mac Pro. Here we have an about $4000 iMac 5K trouncing an ~$8K Mac Pro. For the Mac Pro user that stings! Every other Mac Pro would be even slower than the MPG custom 3.3 GHz 8-core, which makes the 2017 iMac 5K look even better.

The 2015 iMac 5K lags the newer 2017 model by only 5.4%, corresponding almost exactly to the 5% CPU clock speed difference (4.2 vs 4.0 GHz and 4.5 vs 4.2 GHz turbo boost). Clock speed thus seems to be the only factor involved.

* Photoshop is badly implemented for scripted jobs, being unable to run in the background without glitches, and constantly forcing itself to the foreground, making it impossible to do anything else. Running a script in Photoshop essentially idles the machine for other uses while the job runs.

Make multi-res output image series in Photoshop, 2017 iMac 5K vs 2015 iMac 5K vs 8-core 3.3 GHz Mac Pro

Save the tax, we pay you back, instantly!
View all handpicked deals...

Dracast LED500 Plus Series Daylight LED Light
$600 $600
SAVE $0

diglloyd.com | Terms of Use | PRIVACY POLICY
Contact | About Lloyd Chambers | Consulting | Photo Tours
Mailing Lists | RSS Feeds | Twitter
Copyright © 2019 diglloyd Inc, all rights reserved.
Display info: __RETINA_INFO_STATUS__