I am OCing the PC just to check how much it can go on stock.
I will remove the OC when I learn the OCing method for AMD processor (X4). Learning is the only motive.
215 x 6.66 = 1432 Mhz
If you put x8.0 it'll be like 215 x 8 = 1720Mhz which is more than the specifications.
I have heard that 1600Mhz is only achievable only with OC I'm not sure as I havnt played with 1600Mhz rams.
From specs, I think FSB 200 and multiplier x8 should make your memory 1600Mhz with out OCing your CPU.
Even when I am using the default settings FSB at 200 and ram at 8.0X, the PC is showing that it is highly Overclocked (at the start).
The ram should work atleast at 1600 mhz as it is 1600 mhz ram (Corsair XMS3).