Going from 65 to 45nm may mean the main difference in top oc clocks, but even at both at 45nm, pens slightly outclock the i7s. Plus, they dont heat up, and thats just part of the native quads makeup, with everything on board 1 chip, like AMD has been doing for awhile. Having SMT effects all this, as well as a IMC structure. Really, whats amazing here is P2 doesnt get near as hot as i7, being so similar, tho, at same loads, we will have to see, once Denebs released, if at the same load, i7 gets hot or not