Thank you for buying via links and ads on this site,
which earn me advertising fees or commissions.
As an Amazon Associate I earn from qualifying purchases.

Other World Computing...
B&H Photo...
Amazon
As an Amazon Associate I earn from qualifying purchases.
Upgrade the memory of your 2018 Mac mini up to 64GB
877-865-7002
Today’s Deal Zone Items... Handpicked deals...
$348 $298
SAVE $50

$170 $120
SAVE $50

$300 $175
SAVE $125

$999 $879
SAVE $120

$400 $310
SAVE $90

$1470 $1299
SAVE $171

$322 $242
SAVE $80

$1470 $1299
SAVE $171

$180 $140
SAVE $40

$500 $275
SAVE $225

$180 $156
SAVE $24

$130 $100
SAVE $30

$3498 $2998
SAVE $500

$1699 $1149
SAVE $550

$280 $230
SAVE $50

$1899 $1499
SAVE $400

$4499 $3499
SAVE $1000

$2198 $1998
SAVE $200

$3998 $3498
SAVE $500

$1799 $1699
SAVE $100

$18599 $16599
SAVE $2000

$1149 $849
SAVE $300

$650 $450
SAVE $200

$199 $119
SAVE $80

$280 $200
SAVE $80

$1399 $1049
SAVE $350

$1199 $779
SAVE $420

$250 $220
SAVE $30

$1699 $1149
SAVE $550

$195 $125
SAVE $70

$79 $49
SAVE $30

$120 $30
SAVE $90

$198 $148
SAVE $50

$3899 $1499
SAVE $2400

$2999 $1999
SAVE $1000

$1699 $849
SAVE $850

$1698 $1198
SAVE $500

$1149 $849
SAVE $300

$1399 $1049
SAVE $350

$1498 $998
SAVE $500

$2797 $2497
SAVE $300

$280 $230
SAVE $50

$899 $549
SAVE $350

$420 $170
SAVE $250

$1699 $1149
SAVE $550

$3397 $3097
SAVE $300

OWC Accelsior 4M2 PCIe SSD
6000 MB/sec!
Mac or PC.


Ideal for Lightroom, Photoshop, video.
Capacity up to 16TB!

Case Study of Mac Pro Memory and Photoshop CS5 Performance

Last updated 2010-10-25 - Send Feedback
Related: how-to, Mac Pro, memory, Photoshop, software

The diglloydMedium benchmark requires 15.8GB of real for Photoshop CS5 to run efficiently. Therefore, something more than 16GB of installed memory is required to make it run efficiently.

Comments follow.

Execution time in seconds for various memory configurations (problem size requires 15.8GB memory)
(averaged over 5 iterations after a prior warmup)

Key observations

More is generally better, but there are threshold effects and subtleties:

  • The absurd 3GB configuration kills performance; any extra memory helps considerably.
  • ENOUGH memory drops the time off a cliff: 24GB runs in less than 1/3 the time of 16GB.
  • More than ENOUGH is not always helpful; 32GB is slower than 24GB in this case, because it reduces memory speed.

ENOUGH memory means that the particular task involved has its needs fully satisfied with memory to spare for other system activities.

Using 32GB instead of 24GB reduces performance by 2.7%. That’s because 24GB is already ENOUGH, and 3 X 8GB runs in triple channel mode, yielding faster memory access times the dual-channel mode used with 4 X 8GB.

HOWEVER, if the problem size were to increase to about 24GB or larger, then the 32GB configuration would be much faster, because the ENOUGH criterion would not have been satisfied with 24GB.

OWC Envoy Pro EX SSD
Blazingly fast Thunderbolt 3 SSD!

Up to 4TB capacity, USB-C compatible.

USB-C model also available


Great for travel or for desktop!
OWC Envoy Express

World’s first Thunderbolt 3 M.2 NVME SSD enclosure.

Super fast, bus-powered, 3.3 oz, DIY easy, rugged and compact!


See also OWC Express 4M2
√ No more slow and noisy hard drives!
OWC Thunderblade Thunderbolt 3 SSD

Blazing fast, up to 16TB.

YEE HAH!



√ No more slow and noisy hard drives!

MacPerformanceGuide.com
View all handpicked deals...

Lexar 128GB Professional 2000x UHS-II SDXC Memory Card
$170 $120
SAVE $50

diglloyd.com | Terms of Use | PRIVACY POLICY
Contact | About Lloyd Chambers | Consulting | Photo Tours
Mailing Lists | RSS Feeds | Twitter
Copyright © 2020 diglloyd Inc, all rights reserved.
Display info: __RETINA_INFO_STATUS__