Thank you for purchasing through links and ads on this site.
OWC / MacSales.com...
diglloyd Deal Finder...
Buy other stuff at Amazon.com...
Upgrade the memory of your 2019 iMac up to 128GB
Handpicked deals...
$2399 $2159
SAVE $240

$200 $200
SAVE $0

$1499 $1148
SAVE $351

$590 $472
SAVE $118

$1299 $997
SAVE $302

$1199 $1015
SAVE $184

$1480 $1230
SAVE $250

$3999 $2499
SAVE $1500

$1498 $1098
SAVE $400

$2897 $1797
SAVE $1100

$399 $399
SAVE $0

$899 $699
SAVE $200

$3297 $1897
SAVE $1400

$749 $499
SAVE $250

$799 $567
SAVE $232

$870 $749
SAVE $121

$3499 $2199
SAVE $1300

$3599 $2399
SAVE $1200

$4499 $2650
SAVE $1849

$750 $600
SAVE $150

$899 $699
SAVE $200

$799 $729
SAVE $70

$3599 $2399
SAVE $1200

$3499 $2199
SAVE $1300

$4499 $2650
SAVE $1849

$1997 $897
SAVE $1100

$1600 $1600
SAVE $0

$3099 $2499
SAVE $600

$2799 $2199
SAVE $600

$4999 $4599
SAVE $400

$4499 $2650
SAVE $1849

Save Big $$$$ on Memory for 2019 Mac Pro

Up to 65% better pricing than Apple

Lloyd recommends 32GB RDIMM modules for most users (more expensive LRDIMMS are for 512GB or more).


2017 MacBook Pro: IntegrityChecker Verify

Mac wish listall 15" Apple MacBook Pro 2017 modelsMPG gets credit if you buy through those links. Suggested accessories include the OWC Thunderbolt 3 Dock and 1TB Envoy Pro EX.

MPG tested a fully-loaded 2017 MacBook Pro with 1TB SSD.

DiglloydTools IntegrityChecker runs SHA1 hashes on files to maintain data integrity checks.

Its verify command utilizes all CPU cores as efficiently as any application ever can, using sophisticated I/O algorithms to feed data to the CPU as fast as the OS can go. Performance will thus be gated by I/O speed unless all CPU cores are fed data fast enough to be fully utilized.

Results

At 4.2 GHz (turbo boost 4.5 GHz), the 2017 iMac 5K can be expected to outrun the 3.1 GHz 2017 MacBook Pro (turbo boost 3.6 GHz) by about 35% at base clock speed, or 25% at full turbo boost speed—for pure CPU tasks (no disk I/O).

Intel Power Gadget shows that with IntegrityChecker using 4 threads, about 3.70 GHz is maintained by the 2017 MacBook Pro (beyond the rated turbo boost speed of 3.6 GHz!). The 2017 iMac 5K maintains a steady 4.4 GHz, for a 19% clock speed advantage. But with disk I/O involved, that advantage in the Real World is only about 12%.

The 2016 MacBook Pro laptop is within 17% of the 2015 iMac 5K desktop — impressive.

Both the late 2017 iMac 5K and 2017 MacBook Pro trounce the aging 2013 Mac Pro, whose SSD dodders along at around 1100MB/sec (versus 3X that speed for the 2017 Macs and 2X for the 2015 MacBook Pro). This just kills the performance for the Mac Pro—it is I/O bound.

The 2015 MacBook Pro has the slowest SSD of the bunch, but it still trounces the 2013 Mac Pro because its SSD is at least twice as fast.

* Models of the 2013 Mac Pro built in 2015 or so or later may might have somewhat faster SSDs. The 3.3 GHz 8-core Mac Pro used for this test is faste than any model that can be purcahsed at Apple.

IntegrityChecker verify 139.25GB data in 207098 files
New Mac Pro?

Or iMac 5K or iMac Pro?
Consult with Lloyd ASAP before buying!


System configuration for CPU, GPU, memory, SSD, backup, RAID, optimizing performance, workflow.
For YOUR optimal workflow

Avoid costly mistakes in throwing money at the problem for less performance and/or buying the wrong machine for your own needs!

Remote screen sharing available for RAID, software configuration, etc.

More about 2019 Mac Pro vs iMac 5K vs iMac Pro...

View all handpicked deals...

SanDisk 512GB Extreme PRO UHS-I SDXC Memory Card
$200 $200
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__