so amd 6990x2 1640 1.416 1200 1010 3072 2.1 PCI-E 2.0 x16 x16 phoenix 1.7.0 would be much better for mining then and looks like nvidia well sucks for bitmining
6990x2
that means 2(two) pieces of hradware
you may want to get a better cpu
someone posted here a link and he makes around 3.8$ in 24h worth of altcoins while mining