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...
$1998 $1798
SAVE $200

$4499 $2999
SAVE $1500

$1799 $1599
SAVE $200

$3498 $2998
SAVE $500

$2198 $1748
SAVE $450

$898 $698
SAVE $200

$2999 $1699
SAVE $1300

$799 $529
SAVE $270

$2397 $2197
SAVE $200

$130 $100
SAVE $30

$2397 $2197
SAVE $200

$1697 $1597
SAVE $100

$2998 $2798
SAVE $200

$2198 $1748
SAVE $450

$1799 $1599
SAVE $200

$2198 $1898
SAVE $300

Mac Pro Westmere Internal SATA Bandwidth

The 2010 Mac Pro motherboard still has a maximum bandwidth of around 690MB/sec for internal SATA ports, as shown below (I’ve previously tested with up to 4 SSDs in the 2009 model).

Using DiskTester, I tested a RAID-0 stripe of 3 X 200GB OWC Mercury Pro RE solid state drives. That configuration ought to reach speeds of about 840MB/sec for reads, and 780MB/sec writes, if scalability were perfect.

The actual speed figures shown below are not so high, because the Mac Pro SATA ports share a maximum bandwidth limitation.

Since two SSDs are good for about 510MB/sec reads and 470MB/sec writes (as actually measured), the improvement with three of them is not as impressive as one might hope.

Still, there’s no denying that even two SSDs offer a level of performance that outstrips the ability of most programs to use it. Using three SSDs is a smart move for anyone working with programs like PTGui.

Actual measured speed vs performance available from SSDs

View all handpicked deals...

FUJIFILM GFX 50R Medium Format Mirrorless Camera
$4499 $2999
SAVE $1500

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__