I am building a video editing computer and would like to use the latest P4 CPU and DDRII RAM. I am looking at a few Intel 925X based mobos and noticed the ASUS P5AD2 has 2 SATA controllers. Would this be benificial if I want to connect 2 harddrives in raid and a seperate system SATA harddrive on the other controller? Would a motherboard with a single controller have slower transfer if I use 2 SATA connectors for the RAID and a third for the system harddrive?