Thank you for purchasing through links and ads on this site.
OWC / MacSales.com...
diglloyd Deal Finder...
Buy other stuff at Amazon.com...
Upgrade MacBook Pro Retina SSD
Internal SSD Wishlist…

iMac 5K (Late 2015) vs Mac Pro: PhotoZoom Pro

Last updated 2015-12-02 - Send Feedback
Related: Macs, 4K and 5K, Mac Pro, iMac, Mac

Get iMac 5K at B&H Photo and see also MPG’s computer gear wishlist.
See also diglloyd-recommended performance packages for iMac at OWC.

See also iMac 5K: Building a High-Performance Configuration.

The two machines tested here are the fastest possible CPUs as of late 2015.

Photozoom Pro

This test uses all CPU cores as well as the GPU. As well PhotoZoom Pro has a special tuning feature to test GPU performance in advance.

During this test, the iMac ran its fan quite loudly; the Mac Pro remained all but inaudible.

The late 2015 iMac 5K beats the Mac Pro with a solid margin!

Since the Mac Pro is a 3.3 GHz 8-core machine with dual GPUs (!) and the iMac is a 4.0 GHz 4-core machine with one GPU, this is a pathetic performance for the Mac Pro.

This test shows just how blazingly fast the iMac 5K really can be, even in a situation where the hardware specifications suggest that the Mac Pro should trounce the iMac*.

The explanation is straightforward: while PhotoZoom Pro chews up all 8 cores (16 virtual cores) on the 8-core Mac Pro, about half that CPU usage can be seen to be system time (red in the CPU graph)—synchronization and busy-waiting overhead. In other words, PZP does not scale much beyond 4 CPU cores. Disabling all but 4 CPU cores in PZP preferences proves this to be a correct diagnosis.

PhotoZoom Pro: Scale 50-megapixel image by 400%

Rigorously lab tested and OWC certified.
B&H Deal ZoneDeals by Brand/Category/Savings
Deals expire in 3 hours unless noted. Certain deals may last longer.
$3297 SAVE $800 = 19.0% Nikon D810 DSLR with 24-120mm in Cameras: DSLR

diglloyd.com | Terms of Use | PRIVACY POLICY
Contact | About Lloyd Chambers | Consulting | Photo Tours
Mailing Lists | RSS Feeds | Twitter
Copyright © 2008-2017 diglloyd Inc, all rights reserved.
Display info: __RETINA_INFO_STATUS__