Thank you for purchasing through links and ads on this site.
OWC / MacSales.com...
diglloyd Deal Finder...
Buy other stuff at Amazon.com...
Speed To Create, Capacity To Dream
Storage Wishlist…

Mac Pro Westmere Internal SATA Bandwidth

Last updated 2010-09-05 - Send Feedback
Related: Macs, Mac Pro, Mac

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

SSD Upgrade for MacBook Pro Retina
Internal SSD Wishlist…

diglloyd.com | Terms of Use | PRIVACY POLICY
Contact | About Lloyd Chambers | Consulting | Photo Tours
Mailing Lists | RSS Feeds | Twitter
Copyright © 2008-2017 diglloyd Inc, all rights reserved.
Display info: __RETINA_INFO_STATUS__