They are essentially the same. Even if your motherboards IDE controller is
ATA133(UDMA6) the drive could still be configured as ATA 100 because of
problems with the ata133 SPEC..
http://www.hardwaresecrets.com/article/45/2
"JNB" <John.Bodart DeleteThis @gmail.com> wrote in message
news:1180410903.320104.124800@g4g2000hsf.googlegroups.com...
> ABIT KV7 motherboard with two Maxtor ATA 133 drives.
> I would like to buy at least one new drive and wonder if
> ATA 100 drive would work with the 133 drives on the
> same channel or on different channel and need info on
> SATA drives, can they work with 133 or 100 drives?
>
> JNB
> >> Stay informed about: ATA 100 / 133 hard drives