Wow, a 4 digit...didn't know any of you guys were still around
But in this case you are wrong ancient one, and here is why: Like the BD/PD design the netburst design had a fundamental flaw, in the case of netburst it was that long ass pipeline that made stalls nasty and the fact that the chip never had great IPC to begin with. I mean you can take pretty much any of the Pentium D 8xx chips and hit 4GHz and yet a C2D clocked at less than half of that will curbstomp it and in the case of the i3s it'll curbstomp it while using less under load than the 8xx used at idle.
You see what Intel found out was that raw clocks for clocks sake meant jack and shit if that high clock didn't translate into useful work, or IPC, and the cost of power and cooling to those monsters got to the point people didn't want 'em. Not that I can blame 'em, i have a Pentium D 805 running in the shop while I decide whether its worth the trouble to try to find a socket AM2 board for this ULV Athlon X2 or to say fuck it and just get a Bobcat board and the damned thing will often hit over 143f on light loads and idles at 135f So having the Pentiums hit higher clocks really wouldn't have helped, the design was flawed to begin with. if you don't believe me starmicro has the Pentium D Extreme Editions for $75, grab one of those suckers and a hell of a cooler and you'll probably hit 5.5Ghz...and still get curbstomped by a 3GHz i series or Phenom II X2, because without the IPC to back it up the clock doesn't mean shit.
That is the problem AMD has now, the "half core" design has really shitty IPC (in fact you have to have a 1GHz overclock compared to the Phenom II to beat the Stars arch with the BD arch) and instead of accepting that and going back to the drawing board they are just cranking the shit out of the clock which again gets you into crazy temps and power draw. I mean who would even want a 220w CPU, when a chip drawing half the power in the Intel camp will beat it? Hell I build exclusively AMD but I won't even mess with the 140w because of the heat, i don't even want to know how much heat a 220w CPU would crank, even with liquid cooling the amount of waste heat that thing is gonna generate will just be unreal.