Pentium 4 is dead, and in its place we get two flavours of dual core processor for the desktop. The king of the heap is Pentium Extreme Edition which has dual cores with Hyper-Threading so one physical processor appears as four virtual processors. This will inevitably be the US $999 part that looks good on paper but doesn’t get bought so Intel came up with the bright idea of a dual core part called Pentium D that doesn’t have Hyper-Threading. It runs on the same 800MHz FSB and has the same cache but it appears as two virtual processors, just like the current Prescott. No doubt Pentium Extreme Edition will move to a 1066MHz FSB, which will allow Intel to enable HT in Pentium D but for now it all looks like a bit of a marketing nightmare.