All Posts by Date or last 15, 30, 90 or 180 days.
also by Lloyd: diglloyd.com photography and WindInMyFace.com

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 2020 iMac up to 128GB
877-865-7002
Today’s Deal Zone Items... Handpicked deals...
$300 $175
SAVE $125

$999 $799
SAVE $200

$2798 $2198
SAVE $600

$348 $278
SAVE $70

$389 $299
SAVE $90

$2098 $1298
SAVE $800

$1479 $1079
SAVE $400

$322 $242
SAVE $80

$1479 $1079
SAVE $400

$330 $330
SAVE $click

$498 $398
SAVE $100

$180 $140
SAVE $40

$500 $275
SAVE $225

$180 $136
SAVE $44

$130 $100
SAVE $30

$2997 $2497
SAVE $500

$3498 $2998
SAVE $500

$370 $370
SAVE $click

$4899 $4499
SAVE $400

$1000 $1000
SAVE $click

$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 $799
SAVE $350

$650 $450
SAVE $200

$199 $119
SAVE $80

$280 $200
SAVE $80

$1399 $1049
SAVE $350

$1199 $779
SAVE $420

$250 $200
SAVE $50

$1699 $1149
SAVE $550

$195 $125
SAVE $70

$79 $49
SAVE $30

$120 $30
SAVE $90

$189 $159
SAVE $30

$3699 $1299
SAVE $2400

$3899 $1499
SAVE $2400

$2999 $1999
SAVE $1000

$1699 $849
SAVE $850

$1698 $1198
SAVE $500

$1149 $799
SAVE $350

$1399 $1049
SAVE $350

$1498 $998
SAVE $500

$2797 $2497
SAVE $300

$280 $230
SAVE $50

$700 $500
SAVE $200

$899 $549
SAVE $350

$1699 $1149
SAVE $550

Photoshop and CPU Core Usage

One of the more frustrating things about Photoshop is how many operations run single-threaded, or only slightly better than single threaded. This graph shows a multi-minute job that I needed to run today many times—on the fastest Mac Pro that can be built (8 core 3.3 GHz CPU)!

Observe that CPU usage is about 130%, meaning that one CPU core of eight real CPU cores is used (800%). Put another way, 84% of the computing power goes unused, and the GPUs are useless for this task also. This is why a 4-core anything often performs as well as a far more expensive Mac Pro. Still, there are cases where 6 or 8 cores do get used; it’s all a question of which tasks for how long during the workday.

The core issue remains the same today as 10 or 15 years ago: software algorithms. There are plenty of places where Photoshop runs single-threaded where it need not. It’s a matter of software architecture and until and unless Adobe sees fit to advance in some areas, the fastest CPU speed wins for most all tasks.

CPU usage in Photoshop CC

Deals Updated Daily at B&H Photo
View all handpicked deals...

Apple 13.3" MacBook Air with Retina Display (Early 2020, Space Gray)
$999 $799
SAVE $200

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__