Problem #1. PSU is 160 watts! I know the 220 versions of this slimline don't have problems with these cards but I am willing to gamble here. The online manual says I can use a 25Watt or less GPU. If anything I pulled the PCI tv tunner (never really used) so that may save me 5 watts... maybe.
My main reason for this upgrade is so I can get 1920 x1080 resolution on a spare 42" plasma for movies. Currently VGA is my only option and there are no resolutions that "work". Any gaming improvements will be greatly appreciated but the dual monitor setup is my main goal.