Should i get 2 670s in SLI or a 7970 matrix platinum on its own 
Now i know alot of people would instantly pick the 670s but personally im having a hard time because im an AMD fanboy
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The store is called PLE in australia and the hardware prices are pretty high, the 690 costs 1400 here while 2 670 sli is only 798$ which is a 602$ saving for 5% less performance.
i just want to know your output on what i should do
Also the case choice would have to be a HAF XM or a silverstone raven ro3

Now i know alot of people would instantly pick the 670s but personally im having a hard time because im an AMD fanboy

The store is called PLE in australia and the hardware prices are pretty high, the 690 costs 1400 here while 2 670 sli is only 798$ which is a 602$ saving for 5% less performance.
i just want to know your output on what i should do

Also the case choice would have to be a HAF XM or a silverstone raven ro3