The Catalyst® software suite is designed to support the following ATI desktop products:

Radeon® X1900 series
Radeon® X1800 series
Radeon® X1600 series
Radeon® X1300 series
Radeon® X850 series
Radeon® X800 series
Radeon® X700 series
Radeon® X600 series
Radeon® X550 series
Radeon® X300 series
Radeon® 9X00 series
Radeon® 8500 series
Radeon® 7X00 series

Link