one difference is the use of more types of Cpu's...... you can use CPU's that use 400mhz FSB.... the original one, (the one i have) goes up to 333mhz fsb..
Asus A7N8X Deluxe
80gb Maxtor
200gb WD 8mb cache..
Lian-Li PC-60
LiteOn 52X/LiteOn 811s DVD-RW
AMD XP2800+
LeadTek GF4Ti4200 128mb
Hitachi CML174
1GB Corsair XMS PC3200