Yup, you have to watch out for some of the 9600pro EZ or LITE versions. They are clocked 400/200 and the ? ?effective?? bandwidth 200 DDR (x2) = 400 is the number being quoted. Gigacube makes a LITE 9600pro clocked 400/200 and PowerColor has a 9600pro EZ 400/200.
The Sapphire 9600pro is around $150 and is clocked 400/300 and would be a much better choice.