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.
Get all the tools you need to upgrade the factory HDD of any 2009-2019 iMac to a larger HDD or a modern SSD.
Upgrade the memory of your 2020 iMac up to 128GB

Disappointing: iMac 5K Flash Drive (1TB SSD) way slower than Mac Pro

2014-10-22 - SEND FEEDBACK

Related: 4K and 5K display, iMac, iMac 5K, Mac Pro, SSD

MPG has a 1TB Apple SSD in the Mac Pro, and a 1TB SSD in the iMac 5K.

MPG was puzzled why IntegrityChecker 'verify' was running significantly slower on the iMac, which ought to run significantly faster (faster CPU clock with ~1.4 CPUs used). Disk I/O speed is the culprit.

Not that the iMac SSD is slow, but there is a world of difference:

Mac Pro: writes at ~930 MB/sec and reads at ~1180 MB/sec.
iMac 5K: writes at ~693 MB/sec and reads at ~744 MB/sec.

Bummer.

PCIe lanes are 500MB/sec and apparently the iMac 5K dedicates only 2 lanes (1GB/sec) to the flash drive (Mac Pro uses 4 lanes).

View all handpicked deals...

Kensington StudioDock iPad Docking Station
$450 $100
SAVE $350

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__