I put Shuttle X27D (Atom 330 bare bone) onto Macintosh SE Case.
with Leopard 10.5.2.
It's almost works fine. but ichat video was distorted.
Hardware
Shuttle X27D (Atom 330, Intel 945GC, ICH7) with 60W AC Power
Hitachi 500G HDD
Planex USMicroN Wifi USB Dongle
8inch LCD Moniter
Cherry PS/2 Keyboard
USB Trackball
Microsoft VX-2000 Lifecam