I just bought a barracuda V and I do not own a controller card, but i don't want to spend a lot of money. I was just planning to use this 120gb as a storage hard drive and put the OS on the main WD 40gb hard drive. I have two choices, either buy a PCi controller card or use a sata to IDE converter to make my sata hard disk into IDE and connect it as an ide. Between the two, which would you guys say is cheaper and is a PCI card significantly faster? Also, all motherboards support serial ata if they have a pci card right?