Az UHU 1.2 SMP-s kernele támogatja a 2 CPU-t.
A 64-bites kiterjesztést az UHU 1.2 nem támogatja.

Kerestem guglival leírást, hogy jobban látható legyen:

„Also, a new package had to be designed for the Pentium D chips that could accommodate both cores. „We’re putting two cores in one package, it’s like trying to fit into the pair of pants you saved from college,” Douglas said.

Intel would have preferred to design a package that would put two pieces of silicon in a single package, like the design that will be used for a future desktop chip called Presler, but its packaging team simply didn’t have time to get that in place for Smithfield, Douglas said.

The company’s Pentium D processors consist of two Pentium 4 cores placed closely together on a single silicon die. That design creates some problems in that dual-core processors must have some logic that coordinates the actions of both cores, and those transistors have to go somewhere in an already small package, Douglas said. This caused signaling problems that needed to be overcome, he said.”

Az operációs rendszer szempontjábol mind1.
Két processzornak látod a HT-s procikat ,a P4D-t,vagy a két külön procit.
A több CPU kezeléséhez szükséges az SMP-s kernelmag.