фотография дуальной платы с паяными С3 http//www.extremetech.com/article2/0,3973,1354023,00.asp вот, что пишут Interestingly,

фотография дуальной платы с паяными С3

http//www.extremetech.com/article2/0,3973,1354023,00.asp

вот, что пишут

Interestingly, the C5P can be built into a dual-CPU system, as the picture above demonstrates. Using VIA's mini-ITX motherboard form factor, a pair of nano-BGA C5P's are built onto the board. Note that this is just in the prototype stage currently, and no one has yet announced a dual C5P product yet. But if one becomes available, we'll be sure to check it out.

для справки
C5XL VIA C3 Nehemiah 6.9.0-5
C5P VIA C3 Antaur 6.9.8

PS про более вероятное зависание под ДОС я поторопился написать

множитель via c3