Please remember that any mention of competitors, hinting at competitors or offering to provide details of competitors will result in an account suspension. The full rules can be found under the 'Terms and Rules' link in the bottom right corner of your screen. Just don't mention competitors in any way, shape or form and you'll be OK.
Oh also do i need both 8 pin and 6 pin power connected?
Yes. That whine is your card saying Plug me in!
Have you done a fresh/clean install of the gfx drivers?
I had a problem with my multi-monitor system that I couldn't fix till I followed the above procedure using Driver Sweeper.
I think this is the developer's site:
http://phyxion.net/item/driver-sweeper.html
Check the flux capacitor !
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