Re: Windows XP on Serial ATA, IDE, or P-ATA/133
IDE and ATA133 are the same thing. ATA133 is just a different speed rating for the IDE interface. THere's also ATA33, ATA66, and ATA100. SATA is 150...
I don't know what windows is limited to as AMD said, but I do know that a good portion of the drives can't reach their max rated speeds... I doubt you would get over 100MB/s with most drives, even over ATA100