WTF , what kind of explaination is that ? what is DDR 366 ? what AMD and intel has to do with slower parts and faster parts ? do u know the "Hypertransport" link speed of amd including Sempron is 1600 to 2000 mhz ? what it has to do with Voltages ?

Its the fabricaion process which decides the voltages of the processors amongst other factors .
So is there any other processor which is faster than the athlon fx57 ? (assuming that by mentioning 2.8 ghz you mean fx57)
Pipelines ? There is a word which u missed out here , "
PR"
and BTW , Athlon XP 2400+ runs @ 2 ghz ,AMD 1500+XP runs @ 1.4 ghz.
Athlon XP never had onboard Memory Controllers , AMD never had any combatibility issus with its processors , Only around 1999 , it had issues with AGP miniport drivers , which after upgrading it(Driver) , was resolved .
As of now , intel does not have a single lead on both Single or Dual Core processors ,
Intel P4EE Dual Core Runs @ 3.2 ghz , while its predessor ran @ 3.73 ghz ,Does that mean the 3.2 ghz is slower ? Did i mention
PR before

Cheers !