reply to FiReSTaRT
Re: Graphics both open and proprietary Integrated Intel Graphics work best out of the box with open source drivers. (Guessing you are going to use a i7 Ivy Bridge CPU, and that should already have Intel HD 4000 graphics built-in depending on which model you pick. They are pretty decent graphics built-in with no need to buy a discreet card.)
Nvidia has the best proprietary driver support.
If you are going to game though, I would recommend a Nvidia GeForce GTX 650 or higher. You might could get by on the Intel graphics though, really depends on the type of games you are looking to play.
Verizon FiOS subscriber since 2005 | Mac owner since 1990 | Fedora user since 2006 | CentOS user since 2007 | "Anyone who is unwilling to learn is entitled to absolutely nothing." - graysonf | EDIT: I seldom post without an edit.