The Pentium M 7xx (Dothan) and Banias chips are available in 478 PPGA and 479 H-BGA. The Pentium 4 Northwoods use the 478 PGA. Is it possible to run a Pentium M on 478 PPGA on a desktop socket-478 motherboard? I have not found any electrical differences and any pin allignment differences with the Pentium 4 and Pentium M 478 so far.