Some interesting posts....but basically the gist is that the P4 runs great on software optimized for it. Well, I don't think Microsoft is going to run out and send me new versions of Windows and Office optimized for the P4, nor is Adobe or any other software manufacturer.
Intel is counting on its reputation and strength in the market to sway developers into using SSE2 and writing for the P4 which will allow the it to shine. Not to mention the fact that most people are obsessed with a CPU's clock speed (but which would you want, a 500 P3 or a 533 K6-2?) so they'll buy a faster cpu regardless of anything else.
And just a few points I wanted to address. 1) whoever said that AMD was sitting on their ass...uhhh, excuse me, but the P3 was just a Pentium Pro with bells and whistles...if anybody is guilty of treading water and only trying to stay a half-step ahead of the competition it is Intel.
It's great that they have this new design, but what choice did they have? The P3 is dead and the Athlon is dancing on its grave.
And 2) AMD can use SSE2 because they are licensing the technology from Intel. A shame really that Intel can force the software market to change its ways simply because of the commercials on tv and then other companies have no choice but to follow suit...