You won't have a conflict on those two Intel items, as they don't allow the OEMs to customize the hardware (they wouldn't have the facilities to do so anyway). Keep in mind, on a Haswell CPU, this stuff is all integrated into the CPU die now.
In the old days, they could use different versions of components and wire things up differently and whatnot. Not anymore, and not for quite some time. Now, any customizations they do here are all about branding, and their validation is often quite a few versions back.
Realtek drivers for audio can sometimes be customized by OEMs, but it is increasingly rare on non-laptop boards. Usually the customizations they do to these drivers are all branding, and you can almost always use the Realtek audio and LAN drivers from their website.
Other components are still a crapshoot.