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...
As an Amazon Associate I earn from qualifying purchases.
Up to 1527MB/s sustained performance
Today’s Deal Zone Items... Handpicked deals...
$4499 $2999
SAVE $1500

$799 $429
SAVE $370

$149 $99
SAVE $50

$2198 $1798
SAVE $400

$80 $28
SAVE $52

$3498 $2998
SAVE $500

$2999 $1699
SAVE $1300

$2397 $2197
SAVE $200

$1697 $1297
SAVE $400

$2998 $2898
SAVE $100

$2198 $1798
SAVE $400

$190 $161
SAVE $28

$580 $450
SAVE $130

$2997 $2697
SAVE $300

$1799 $1599
SAVE $200

$2198 $1998
SAVE $200

OWC Black Friday

Best Deals of the Year!

Promo code BFCM2021 good thru Nov 30
Check for new deals daily!

2019 MacBook Pro 16-inch: SSD Speed vs Transfer Size

MPG tested the maxed-out $6099 Apple 2019 MacBook Pro 16-inch 2.4 GHz Intel Core i9 / 64GB / 8TB / Radeon Pro 5500M 8GB.

The support of OWC / and B&H Photo is essential for making these reviews possible.
Please order through our links via these companies and/or subscribe to diglloyd publications.
Mac wish list • Storage wish list • SSD wish list • Ports wish list

Not sure which Mac to get or how to configure it? Consult with MPG Lloyd.

2019 MacBook Pro 16-inch

Many operations require transfer sizes far smaller than those needed for peak SSD speed. This test looks at how the SSD performs for sizes from 32K to 512MB.

Results: SSD Speed vs Transfer Size

Tested with the run-sequential-suite command of diglloydTools DiskTester.

Compared to the 2TB SSD in the 2019 iMac 5K, the 8TB 2019 MacBook Pro SSD shows much slower performance in the critical 32K to 256K range for reads.

While the 2019 MacBook Pro offers substantially faster write performance for writes 256K and larger, such operations are much less important (infrequent) compared to read operations, so the iMac 5K is the clear winner for everyday operations, where reads predominate.

These are real world figures through the OS X file system APIs, and thus reflect the performance available to applications.

Solid lines for 2019 MacBook Pro (orange,blue), dotted (red,green) for 2019 iMac 5K.

2019 MacBook Pro: SSD speed versus transfer size vs 2019 iMac 5K
2019 MacBook Pro 16-inch | 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__