The 30% boost idea is based on the purchased of the latest mobo and processor technology as communicated to me by Eric at ADK. They sold both Macs and PCs until recently. Since you are familiar with software technical details, I think a call to Eric might be a good source of information about hyperthreading and other questions you might have.
Tom Daigon
Avid DS / PrP / After Effects Editor
http://www.hdshotsandcuts.com
Mac Pro 3,1
8 core
10.6.8
Nvidia Quadro 4000
24 gigs ram
Maxx Digital / Areca 8tb. raid
Kona 3
