I apologize the software off-topic in a hardware forum, I want to purchase QuickBench and test my cMP 5,1 environment. The only link I found is this:
eshop.macsales.com
They detail an old MacOS version, I cannot find elsewhere other details.
Intech SpeedTools Test Suite Pro for Mac and PC
The SpeedTools Test Suite is an advanced collection of hard disk performance and stability testing utilities for Macintosh and Windows computers.

They detail an old MacOS version, I cannot find elsewhere other details.