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

Links on this site earn me fees or commissions.
As an Amazon Associate I earn from qualifying purchases @AMAZON

Other World Computing...
B&H Photo...
Upgrade the memory of your 2020 iMac up to 128GB
Memory Upgrades for 2019 Mac Pro - Save Up to 65% vs Factory Costs

OWC Thunderbolt 3 Dock: SD Card Slot Speed vs Dedicated Card Reader, 2015 MacBook Pro

See also Thunderbolt 3 and USB-C Infographic and OWC Now Has Thunderbolt 3 Cables.

The about $299 OWC Thunderbolt 3 Dock has among its other ports a front-facing SD card slot (very handy compared to the anti-design of the rear slot on the iMac 5K).

OWC Thunderbolt 3 Dock, front

Attached to the 2016 MacBook Pro, I wondered how the SD slot would fare versus the card slot on the 2015 MacBook Pro (my travel laptop), and how both would fare versus a dedicated high-speed SDXC card reader, the Lexar Professional USB 3.0 Dual-Slot Reader UDMA 7.

Of course most users shooting JPEG just won’t care about speed much, since 90 MB/sec is quite fast and JPEGs (even 50 megapixel JPEGs) are not all that large. For that matter, most users won’t be using a pro-grade card even 1/3 as fast as the Lexar Professional 2000X 64GB SDXC.

But as a professional photographer, when I am shooting huge raw files and a day’s shoot is 30GB or more, I do care, especially after hiking back from a grueling dawn to dusk outing and I haven’t eaten and want to get some shuteye. Ditto for any photographer on a time-sensitive deadline.

A dedicated card reader supporting the special UDMA modes rocks—bottom line for those for whom speed matters to an SD card, the Lexar Professional USB 3.0 Dual-Slot Reader UDMA 7 'rocks', whether plugged into the OWC Thunderbolt 3 Dock or a Mac Pro. The bundled Lexar SD-only reader is fastest of all, but it doesn’t slot in next to another USB device, so I tend not to use it.

Tested using the read-files command of diglloydTools DiskTester.

SD card reader speed using Lexar Professional 2000X 64GB SDXC
View all handpicked deals...

Apple 13.3" MacBook Pro M1 Chip with Retina Display (Late 2020, Space Gray)
$1899 $1399
SAVE $500 | 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__