Have a Samsung RV511 laptop w/ Intel(R)HD Graphics (Core i3) card. Max resolution 1366x768. Want to upgrade to a Dell SR2320L widescreen monitor for mainly movies and spreadsheet work, not for gaming. Any recommendations for a graphics card upgrade to support the higher resolution? I've been told by Samsung that upgrading the card will void the warranty because it is "integral" with the morther board. True?