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" <> wrote in message
news: ups.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
>