Okay so I have been trying to make a decision between upgrading to SB or Keeping my i7 860 and just upgrading the Memory and Motherboard. It wouldn't be that hard of a decision.... but with some of the really highend MOB prices soon to be dropping on the P55 Chipset It makes one wonder... Which way would make more sense to go? So do you think someone with a i7 860 Capable of hitting 4.2Ghz should go after a Sandy Bridges Setup either a 2500K or a 2600K? Would it be enough of an upgrade to warrant the purchase?