Yes ,there is no special driver needed under Windows 7 ,it simply works.
AMD does not offer any driver for 9xx chipsets from what it seems , except of the AHCI and RAID ,drivers that sometime may perform slower than the Windows included ones or may generate more issues that normal.Use this ones only after testing.
Maybe they ve observed the fact that those drivers they used to put in the packages for 7xx chipsets were useless
Don t worry you will not loose anything performance wise.Just make sure the audio ,LAN and video drivers are up to date and everything will be smooth as silk.