Crazywhitie

Question for you guys I've looked all over the Internet but found nothing, I Have a ATI X1950 Pro 512mb PCIe Card pre-installed very nice card.. I bought and install a ATI 3450 HD 512mb card, I check it with the Vista Proformance thing under system... The X1950 pro with a 5.9 and 5.8, the new 3450 got only a 3.9 and 4.1 ???? Is this card better or should I switch back?? Thanks for any info