Alledgedly ATI will unlock the full power of HD5XXX series in Decembers driver update:
http://translate.google.com/transla...r-leistung&sl=de&tl=en&history_state0=&swap=1
http://translate.google.com/transla...r-leistung&sl=de&tl=en&history_state0=&swap=1


