HP Notebook 15-r100nia Windows 7 (64-bit)

Whats the difference between this list of drivers compared to HP website:
1. remove repetitive drivers with different version.
2. Only list out latest available version (most of them on late 2014)
3. Install all drivers except for Wireless, Bluetooth and Graphic drivers. choose base on your specification.

HP 15-r100nia - Audio Driver win7x64
Realtek High-Definition (HD) Audio Driver
6.0.1.7156 A