At that time ABIT launched their original solution that later gained enourmous popularity. Their idea was to add IDE HDD controller chip that supports UltraDMA66 protocol to the system. From that time UltraDMA controllers become very popular. Intel BX chipset based motherboard owners surely noticed greatest improvement. After that, japanese company CMD joined the club with their controversial controller integrated on ASUS CUBX board.
Current situation is a little different.
Every manufacturer that cares about its reputation now provides controllers that are not part of chipset as additional equipment with every TOP model. It is now being used in combination with VIA KT133 and PM133 system controllers. Due to its recent release, you can find it only on latest motherboard models. Terms, Conditions and privacy information.