My setup that works (I was stupid enough to get a normal ATX size computer :p)
AMD Athlon X2 3800+ AM2
Asus M2N-SLI Deluxe
200GB Sata Western Digital
Sapphire Ati 1650XT Pro
1GB DDR2-800 Corsair XMS2
300W DC~DC ATX PSU
7" In-Dash touchscreen from cartft K90
USB GPS SiRFII
everything works like a charm
