I attempt to avoid OEM drivers and instead opt for Reference drivers.
I have seen cases where an Nvidia reference driver failed on a dell and the actual dell driver was needed. this is rare.
It is more likey that a driver that has been tweaked for a Dell would not work on a non dell card.
can we find the reference driver from the chipset manufacturer ?
if you have a machine that has special needs then make a special disk for it - but generaly not good for the masses.
a reference driver will also support a larger HWID and re-manufactuer base
so i would check IDT (formerly sigmatel) or realtek
strange that it says it is a cmajor audio (sigmatel) when the Dell technical specs say it should be an AC97 (Realtek)
There are a lot of dell PCs out there so we are bound to have Some dell drivers in the packs - no problem.
Lets just attempt to find reference drivers when we can...
(larger lists of supported HWIDS and less likely to have issues)