Posted 19 December 2005 - 01:33 AM
I understand that Serial ATA is here and replacing IDE data transfer. I also recently discovered that there are two different types of Serial ATA, 150 and 300. I understand that SATA 300 is greater data transfer than SATA 150. My question, however, is this: Are the physical connection interfaces the same between SATA 150 and SATA 300 or are they different? Are we talking about two different physical connection interfaces between these two? If so, then I would assume that in order to hook up a SATA 300 hard drive to a mainboard geared for SATA 150 I would need some sort of controller card or something--in the same way that IDE-to-Serial needs a controller card. If they're different, my guess is that motherboards will eventually have both interface connections available--leaving out the floppy and IDE interface connections.
The reason I ask is that I'm wanting to put togther a SATA-based, low-end 64-bit computer at some point in time, but may opt to waite until SATA 300 becomes more the norm. I would like to avoid the use of a controller card. I know that computer technology is always improving and changing and whenever I build this system, a few months or so later it will be technically outclassed I'm sure by some newer technology or something. That I accept, but I'd still like to have an understanding on the SATA 150/300 interface difference, if there is one, so as to avoid the need for a controller card at the time the unit is built.
I've asked some store clerks in computer departments these questions but none of them had an answer.