Might as well push it and see what you can get out of it at this point.Have the HD 6990 chewing on some MOO Wu's to see what it can do, running @ 880 Core & Stock Voltage ...
Still haven't heard back from Newegg on possibly returning 1 of the HD 5970's, trying to Live Chat with them now ...
EDIT: Just talked to Newegg, their going to send me a Prepaid Shipping Label & set me up for a Refund, I have 7 Days to ship back if I want too ...