[citation][nom]warezme[/nom]How is this scary or new? Back in the age of the Athlon FX and Pentium (heatburst) processors, that is how you connected your heatsink to the CPU, directly to the die.[/citation]
Humm, no.
The dies on early Pentiums were mounted on the back of a ceramic slab to which pins were attached so the HSF was making contact with the CPU's packaging/substrate. This arrangement has rather high thermal resistance from die to heatsink.
When Intel went with FC-BGA, they introduced Slot-1 and AMD introduced Slot-A where the CPU ships with HSF bolted to the CPU+cache PCB.
The P3 is the only Intel chip I remember where end-users had to put their HSF directly on the exposed CPU die. Every other desktop Intel CPU after that (s370/P3) had the IHS.