I reckon you 'might' squeeze x47 under 1.4vcore on that one, if not it shouldn't be too far off but all depends on how it scales & temp headroom. Nothing major needs to be done with RAM, just drop it down to 1333/1600, leave timings on auto and set voltage as per what the kit is meant to run at. Takes it out of the equation for being a possible limiting factor when clocking core, just like uncore. All in the guide.
Nice chip there, should be a good 'un if it scales well.