theres no point getting 8400 over 8500 at moment imo, its only a tenner, though you could look at dropping down to an E7400 and clocking it back up, you could also change the mobo for the gigabyte GA-EP43-DS3L, so long as youre not bothered about going crossfire at a later date, this would save you £30 there, Id add in an aftermarket cooler for CPU too, even if its just the akasa ak965