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.
Upgrade the memory of your 2020 iMac up to 128GB
Upgrade the memory of your 2018 Mac mini up to 64GB
Apple MacBook Pro 16.2" M1 Max 64GB/4TB
IN STOCK

Most Powerful MacBook Pro ever!.

Consult with Lloyd on what to buy!


√ B&H Photo PAYS THE SALES TAX FOR YOU More info...

OWC Accelsior Pro Q vs Accelsior: Real World Throughput

Get OWC Accelsior Pro Q and OWC Helios and OWC SSD at MacSales.com.

For 3+ years my scratch volume for Photoshop and other programs has been a pair of 960GB OWC Mercuy Accesior PCIe SSD cards in an OWC Helios 2 enclosure via Thunderbolt.

With the OWC Accelsior Pro Q offering nearly double the speed of the original Accelsior, I wondered how much faste IntegrityChecker would run with the higher available bandwidth, particularly using a striped pair of both cards as a RAID-0 stripe.

CPU utilization and throughput was considerably higher with the Accelsior Pro Q, showing that for certain real world tasks, I/O performance can make a considerable difference in performance.

4TB Accelsior Pro Q as 2 X 2TB stripe: 6.3 CPU cores, 2009 MiB/sec = 2106 MB/sec
2TB Accelsior as 2 X 960GB stripe: 3.7 CPU cores, 1127 iMB/sec = 1182 MB/sec

- OWC Accelsior PCIe SSD cards in single OWC Helios 2 enclosure*.
- OWC Accelsior Pro Q PCIe SSD cards in two OWC Helios enclosures on 2 Thunderbolt busses.

- I/O size tested up to 128MB transfers; speed was the same with 8/64/128MB transfers, presumably since IntegrityChecker uses sophisticated I/O techniques.

* Accelsior performance would not likely be faster in dual enclosures on dual busses, since the read speed is about 250 MB/sec below what the Thunderbolt bus can handle.

Integrity Checker verify MB/sec: 2TB OWC Accelsior Pro Q RAID-0 vs 960GB Accelsior RAID-0
Integrity Checker verify CPU usage and throughput with 2 X 2TB OWC Accelsior Pro Q RAID-0 stripe

CLICK TO VIEW: OWC PCIe SSD

View all handpicked deals...

Sony X85J 75" Class HDR 4K UHD Smart LED TV
$1798 $1298
SAVE $500

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__