Absolute pleasure to see someone using a a graphics board to suit what they do rather than the relentless nVidia bandwagon.
If you are not a hardcore gamer the Matrox dualheads are superb 2d boards. Next, beg, borrow or steal a second monitor to experience how a 'wimp' OS is really meant to be used. Good brand and strongly recommended - paddle against the PC fashion police and use a board designed for what you use a computer for.
Regards
Rob