I doubt...
зaвидyй мoлчa и cпepвa дoбeйcя
envy in silence and prove that you can do it better
8*6990 would have been godly for mining
It will give 5.1 * 8 TFlops = 40.8 TFlops, 5,28 GHash/s
the whole network is 580 GHash/s - bitcoincharts.com
10 500 000 BTC per 4 years = ~7200 BTC/Day
7200 * 5,28/586 = 64 BTC / day
~220 days to cover costs (without electricity)