Alright i understand that the HD 4870 has its own audio, however everytime i boot up my computer windows detects an unknown PCI device with this new card. I have the latest 8.7 beta drivers installed and im almost postive that the PCI device is the HD 4870's sound. Anyone know where i can get these drivers, also what overclocks u guys getting. I maxed out the CCC core oc to 790 but i only get 1065 on the mem or else i get artifacts in atitool.