SATA drives are easier to install, take up less room (small cable compared to the fat thick in the way cable of the ide drives) and they run faster. Definitely keep the SATA drive. I bleive you can buy a pci controller card to install it in ur current system, instead of witing until u buy a new system. I have both 1SATA drive and i just installed my old IDE drive, man was that a bit of work gettung that thing in there. I'd much rather have another SATA drive.