I have used both. From a performance standpoint, the SCSI drives are probably better, but in practice, you will probably not notice a difference. However, on most systems, it is easier to boot from an IDE drive than SCSI. The choice is yours, but I would probably boot from SCSI just because it SHOULD be the better performer :) . Peter ----------------------------------------------- The NoSpin Group [log in to unmask] -----Original Message----- I have 2 choices of drive, they are both 7200RPM, both Seagate but that's where the similarities stop. I use an Adaptec Ultra2 SCSI controller (4+ years old at this stage) and 36GB Ultra2 SCSI drive, and in the past this combination has worked well but not necessarily mind-blowing in terms of performance. Jerry O'Connell. Visit our website regularly for FAQs, articles, how-to's, tech tips and much more http://freepctech.com