As Alice pointed out, the Audio driver hardware ID can be seen in Device Manager. What and where is this other Hardware ID that you are comparing too?
Hardware ID's shouldn't change since they are needed to load the device driver. The master OS hardware ID is something different that is used for activation
Some times different stepping of silicon has different compatibility IDs: SUBSYS_CC823D27&REV_1001\4&1A9CE985&0&0001. If you look in the audio drivers INF file, you will see a list of PnP IDs many with the core VEN\DEV but with different SUBSYS_. For example, the audio driver you are using is from IDT. Checking one of the IDT drivers I have, the following list of PnP IDs in the INF file:
%ST.DeviceDesc%=STHDA,HDAUDIO\FUNC_01&VEN_111D&DEV_76C9&SUBSYS_103C2AA7
%ST.DeviceDesc%=STHDA,HDAUDIO\FUNC_01&VEN_111D&DEV_76C9&SUBSYS_103C2AA8
%ST.DeviceDesc%=STHDA,HDAUDIO\FUNC_01&VEN_111D&DEV_76C9&SUBSYS_103C2ABB
%ST.DeviceDesc%=STHDA,HDAUDIO\FUNC_01&VEN_111D&DEV_76C9&SUBSYS_103C2ADD
%ST.DeviceDesc%=STHDA,HDAUDIO\FUNC_01&VEN_111D&DEV_76C7&SUBSYS_103C2AB5
%ST.DeviceDesc%=STHDA,HDAUDIO\FUNC_01&VEN_111D&DEV_76C7&SUBSYS_103C3AB5
%ST.DeviceDesc%=STHDA,HDAUDIO\FUNC_01&VEN_111D&DEV_76C7&SUBSYS_103C2AB6
%ST.DeviceDesc%=STHDA,HDAUDIO\FUNC_01&VEN_111D&DEV_76C7&SUBSYS_103C3AB6
%ST.DeviceDesc%=STHDA,HDAUDIO\FUNC_01&VEN_111D&DEV_76C7&SUBSYS_103C2ACE
%ST.DeviceDesc%=STHDA,HDAUDIO\FUNC_01&VEN_111D&DEV_76C7&SUBSYS_103C2AC8
%ST.DeviceDesc%=STHDA,HDAUDIO\FUNC_01&VEN_111D&DEV_76C7&SUBSYS_103C2ACD
%ST.DeviceDesc%=STHDA,HDAUDIO\FUNC_01&VEN_111D&DEV_76E0&SUBSYS_103C2AC3
%ST.DeviceDesc%=STHDA,HDAUDIO\FUNC_01&VEN_111D&DEV_76E0&SUBSYS_103C2ACB
%ST.DeviceDesc%=STHDA,HDAUDIO\FUNC_01&VEN_111D&DEV_76E0&SUBSYS_103C2ADC
%ST.DeviceDesc%=STHDA,HDAUDIO\FUNC_01&VEN_111D&DEV_76E0&SUBSYS_103C2AE5
%ST.DeviceDesc%=STHDA,HDAUDIO\FUNC_01&VEN_111D&DEV_76E0&SUBSYS_103C2AEC
%ST.DeviceDesc%=STHDA,HDAUDIO\FUNC_01&VEN_111D&DEV_76E0&SUBSYS_103C2AF1
%ST.DeviceDesc%=STHDA,HDAUDIO\FUNC_01&VEN_111D&DEV_76E0&SUBSYS_103C2AFA
%ST.DeviceDesc%=STHDA,HDAUDIO\FUNC_01&VEN_111D&DEV_76E0&SUBSYS_103C2B04
%ST.DeviceDesc%=STHDA,HDAUDIO\FUNC_01&VEN_111D&DEV_7676&SUBSYS_103C2AD5
%ST.DeviceDesc%=STHDA,HDAUDIO\FUNC_01&VEN_111D&DEV_7676&SUBSYS_103C2ADA
%ST.DeviceDesc%=STHDA,HDAUDIO\FUNC_01&VEN_111D&DEV_7676&SUBSYS_103C2AE0
%ST.DeviceDesc%=STHDA,HDAUDIO\FUNC_01&VEN_111D&DEV_76C7&SUBSYS_103C2AF3
%ST.DeviceDesc%=STHDA,HDAUDIO\FUNC_01&VEN_111D&DEV_76C7&SUBSYS_103C2B17
%ST.DeviceDesc%=STHDA,HDAUDIO\FUNC_01&VEN_111D&DEV_76F3&SUBSYS_103C2AF7
%ST.DeviceDesc%=STHDA,HDAUDIO\FUNC_01&VEN_111D&DEV_76DF&SUBSYS_103C2B16
%ST.DeviceDesc%=STHDA,HDAUDIO\FUNC_01&VEN_111D&DEV_76DF&SUBSYS_103C2B1C
There are different SUBSYS for the same VEN\DEV ID. Your application should really be checking to see if the driver is working correctly by checking the driver status based on the VEN\DEV - HDAUDIO\FUNC_01&VEN_111D&DEV_7675.