HD 4870 audio questions

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.

About the overclocking, you'll probably need to turn the fan speed up to get the OC stable. Mine is running rock solid in games at 790/1100 with fan speed set to 45%. For normal use I have a profile set to stock speeds and fan speed at 30%, because it's quite a bit quieter that way.

You can change the fan speed by making a profile in the CCC (make sure ATI OverDrive is checked) then going to:

CDocuments and Settings/{your user name}/Local Settings/Application Data/ATI/ACE

Find the profile you made (same name you gave it), open it with notepad and change the following lines:

<Feature name="FanSpeedAlgorithm_0">
<Property name="FanSpeedAlgorithm" value="MANUAL" />
</Feature>
<Feature name="FanSpeedRPMTarget_0">
<Property name="Want" value="0" />
</Feature>
<Feature name="FanSpeedPercentTarget_0">
<Property name="Want" value="45" /> {or whatever you want}