I had 1 PSU powering the boards and the controller. I put another psu on the controller and booted up the boards first, and now it is running at full speed. Thanks for the advise you two..

Cheers. Let me/us know if you encounter more problems.
Meanwhile i'm itching to get a S7 myself but its pretty hard to put up so much capital up front when the difficulty going to be going much higher over the next several months.