Hello,
The minimum systems requirements can be found in the link below.
http://www.soapui.org/About-SoapUI/syst ... ments.htmlHowever the rule of thumb here is the more - the better!
Regarding the threads question I'm afraid there isn't an easy answer here. It all depends on what the threads are attempting to do.
Given a delay between the threads due to settings or systems specs will affect the outcome of the load test.
Almost any computer can theoretically do it but it might not give the result you're expecting.
Having a good computer is always good but kind of hard to define.. But the rule of thumb applies!
However if you're interested in load testing LoadUI is the way to go.
There is a free version software available at our website.
Regards
Kai and the Smartbear support team