OK I can be some help I own a XFX 780i which is the same as yours. First tighten your ram timings which well help (1:1 synch) and start overclocking. You wont need to bump the voltages on the NP (they should be auto) and start small. Make sure your cpu has better than stock cooling. By they way have you fan modded your board yet? If not it is more than worth the extra noise.