Thread: dc-dc power supply

hi guys im lookin for a DC-DC power supply for an incar pc, ive loked at the M2-ATX one but i dont think thats going to be up to powering what i have

car pc spec:

Asus ATOM 330 AT3N7A-I
2x2gb ram
32gb raptor (OS drive)
500gb sata storage drive (seagate)

will be using onboard sound a video so no need for extra power there but i think the 2 hard-drives will be the main power drainers

if this is not powerful enought then is there another that can do it