HD Graphics

Hi, I might sound totally stupid posting this thread right now, but I'm kind of confused.
I'd like to upgrade my graphics to the ones of Legion ect... I see there are guides on how to do this, with a bunch of different patchs to download, that's where I get confused as there are similar and/or same patchs on different threads. In the end I don't know which ones to download as I'm looking for the best results possible.

What I'm asking for is to point me to one thread where there's no looking further please :'D

Thanks, sorry I'm new...