1997 is based on the XC4000XL architecture.

1998 is based on the Denali architecture

1999 is based on an extended Denali architecture

Drive home the point that our FPGAs use a segmented architecture which is required for very high density. We believe that the other major players in the high density market will also use segmented architectures if they want to participate in this market. This segmented architecture is largely responsible for the low power dissipation that our devices exhibit when operating at high speed. (Contrast with Altera which is about 3x higher power dissipation).